Dixon Lawn Mower 13782 0503 User Manual

4500 Series  
ZTR®  
Model Year 2004  
 
INDEX  
Page  
Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12  
Warranty Policy. . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
Seat Adjustment Instructions. . . . . . . . . . . . . . . . .15  
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-18  
Operation Instructions. . . . . . . . . . . . . . . . . . 19-30  
Care & Maintenance. . . . . . . . . . . . . . . . . . . .31-44  
Standard Service Parts List. . . . . . . . . . . . . . . 46-47  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . 48-49  
4500 Series  
Part No. 13782-0503  
3
 
SAFETY  
RIDING LAWN MOWERS,  
IF IMPROPERLY OPERATED  
CAN CAUSE SERIOUS INJURY OR DEATH  
The most common causes of injury to the operator or bystander...  
Blade Contact  
Run Over  
Tip Over  
Back Over  
...read and understand this manual to prevent injuries.  
4
 
SAFETY  
Safety Alert Symbol  
When you see this symbol, BE ALERT  
to the potential for injury.  
Follow recommended safety precautions  
and safe operating practices.  
DANGER  
(highlighted in red)  
indicates an imminently hazardous  
situation which, if not avoided, will result in  
death or serious injury.  
WARNING  
(highlighted in orange)  
indicates a potentially  
hazardous situation which, if not  
avoided, could result in death or  
serious injury.  
CAUTION  
(highlighted in yellow)  
indicates a potentially  
hazardous situation which,  
if not avoided, may result in minor  
or moderate injury. It may also  
be used to alert against  
unsafe practices.  
5
 
SAFETY  
Failure to observe the following safety instructions  
could result in serious injury or death.  
GENERAL OPERATION:  
Read, understand, and follow all instructions in the  
manual and on the mower before starting.  
Only allow responsible adults, who are familiar with the  
instructions, to operate the mower.  
Clear the area of objects such as rocks, toys, wire,  
etc., which could be picked up and thrown by the blade.  
Be sure the area is clear of other people before mow-  
ing. Stop mower if anyone enters the area.  
Never carry passengers.  
Do not mow in reverse unless absolutely necessary.  
Always look down and behind before and while braking.  
Be aware of the mower discharge direction and do not  
point it at anyone.  
Do not operate the mower without either the entire  
grass catcher or the deflector in place.  
Slow down before turning.  
Never leave a running mower unattended. Always turn  
off blades, set parking brake, stop engine and remove  
key before dismounting.  
Turn off blades when not mowing.  
6
 
SAFETY  
GENERAL OPERATION (continued):  
Stop engine before removing grass catcher or unclog-  
ging chute.  
Mow only in daylight or good artificial light.  
Do not operate the mower while under the influence of  
alcohol or drugs.  
Watch for traffic when operating near or crossing  
roadways.  
Use extra care when loading or unloading the mower  
into a trailer or truck. Do not ride the mower when  
loading and unloading.  
Always wear safety goggles or safety glasses with side  
shields when operating mower.  
Data indicates that operators, age 60 years and above,  
are involved in a large percentage of riding mower-  
related injuries. These operators should evaluate their  
ability to operate the riding mower safety enough to  
protect themselves and others from serious injury.  
Follow the manufacturer’s recommendation for wheel  
weights and counterweights.  
Maintain or replace safety & instruction labels as  
needed.  
Warning:  
The engine exhaust from this product contains chemicals known to  
the State of California to cause cancer; birth defects or other  
reproductive harm.  
7
 
SAFETY  
SLOPE OPERATION:  
Slopes are a major factor related to loss-of-control  
and tip-over accidents,  
which can result in severe injury or death.  
All slopes requires extra caution.  
If you cannot back up the slope or if you feel uneasy on it,  
do not mow it!  
DO  
Mow across the slope with your Dixon ZTR - never  
up or down.  
Remove obstacles such as rocks, tree limbs, etc.  
Watch for holes, ruts or bumps. Uneven terrain  
could overturn the mower. Tall grass can hide  
obstacles.  
Use slow speed. Tires may lose traction on slopes  
even though the brakes are functioning properly.  
Use extra care with grass catchers or other attach-  
ments. These can change the stability of the  
mower.  
Keep all movement on the slopes slow and  
gradual. Do not make sudden changes in speed or  
direction.  
8
 
SAFETY  
SLOPE OPERATION (continued):  
DO (continued):  
Avoid starting or stopping on a slope. If tires lose  
traction, disengage the blades and proceed slowly  
down the slope.  
If front wheels lift off the ground, pull the levers  
back to stabilize the mower.  
DO NOT  
Do not turn on slopes unless necessary, and then,  
turn slowly and gradually downhill, if possible.  
Do not mow near drop-offs, ditches, or embank-  
ments. The mower could suddenly turn over if a  
wheel is over the edge of a cliff or ditch or if an  
edge caves in.  
Do not mow on wet grass. Reduced traction could  
cause sliding.  
Do not try to stabilize the mower by putting your  
foot on the ground.  
Do not use grass catcher on steep slopes.  
9
 
SAFETY  
SERVICE:  
Use extra care in handling gasoline and other fuels.  
They are flammable and vapors are explosive.  
Use only an approved container.  
Never remove fuel cap or add fuel with engine  
running. Allow engine to cool before refueling.  
Do not smoke while refueling.  
Never store the mower or fuel container inside a  
building where there is an open flame.  
If fuel is spilled on clothing, change clothing immedi-  
ately.  
To prevent fire and explosion caused by static  
electricity:  
Never fill containers inside a vehicle or on a  
truck or trailer bed with a plastic liner. Always  
place containers on the ground away from your  
vehicle before filling.  
When practical, remove fuel powered equip-  
ment from the truck or trailer and refuel it on  
the ground. If this is not possible, refuel such  
equipment on a trailer with a portable container,  
rather than from a fuel dispenser nozzle.  
If a fuel dispenser nozzle must be used, keep  
the nozzle in contact with the rim of the fuel  
tank or container opening at all times until  
fueling is complete. Do not use a nozzle lock-  
open device.  
10  
 
SAFETY  
SERVICE (continued):  
Never run a mower inside a closed area. The exhaust  
fumes are toxic.  
Keep nuts and bolts tight, especially blade attachment  
bolts, and keep equipment in good condition.  
Never tamper with safety devices. Check their proper  
operation regularly.  
Keep mower free of grass, leaves, or other debris  
build-up. Clean up oil or fuel spillage. Allow mower to  
cool before storing.  
Stop and inspect the equipment if you strike an object.  
Repair, if necessary, before restarting.  
Never make adjustments or repairs with the engine  
running unless otherwise specified.  
Grass catcher components are subject to wear,  
damage and deterioration, which could expose moving  
parts or allow objects to be thrown. Frequently check  
components. Replace with original equipment parts,  
when necessary.  
Mower blades are sharp and can cut. Wrap blades or  
wear gloves, and use extra caution when servicing  
them.  
Batteries contain sulfuric acid. To prevent burns avoid  
contact with skin, eyes and clothing. To prevent fire or  
explosion keep sparks and open flames away from  
battery.  
Before disconnecting the negative (-) ground cable,  
make sure all switches are off.  
11  
 
SAFETY  
CHILDREN:  
Tragic accidents can occur if the operator is not  
alert to the presence of children.  
Children are attracted to lawn mowers and the  
mowing activity.  
NEVER assume children will stay where they  
were last seen.  
Be alert to avoid accidents.  
Keep children out of the mowing area and under  
the watchful care of another responsible adult.  
Be alert and turn mower off if a child enters the  
area.  
Before and during backing look BEHIND and  
DOWN for small children.  
Never carry children. They may fall off and be  
seriously injured or interfere with safe mower  
operation.  
Never allow children to operate the mower.  
Use extra care when approaching blind corners,  
shrubs, trees, or other objects that may obscure  
vision.  
12  
 
DIXON LIMITED WARRANTY POLICY  
RESIDENTIAL HYDRO  
DIXON ZTR MOWERS ARE WARRANTED AGAINST DEFECTS IN MATERIALS AND  
WORKMANSHIP AND PROVIDES FOR REPLACEMENT OR REPAIR OF PARTS  
INCLUDING LABOR COSTS. THIS WARRANTY IS SUBJECT  
TO THE FOLLOWING CONDITIONS AND LIMITATIONS.  
1. Home Owner Application: Dixon ZTR Residential Hydro units used only at owner’s  
primary place of residence are warranted for a period of two (2) years from date of  
purchase. Frame, body panels and fenders are warranted for the life of the mower.  
2. CommercialApplication: Definedasuseotherthan, orinadditionto, mowingatowner’s  
primary placeof residence. DixonZTR Residential Hydrounits, usedincommercial  
application are warranted for a period of (90) days from the date of purchase.  
3. Warranty applies only to original retail purchaser of new and unusedmowersand  
accessories.  
4. All Dixon warranty must be accomplished by authorized Dixon dealers and in accor-  
dance with Dixon warranty policy and allowances. All warranty claims must be approved  
by Dixon Industries, Inc.  
5. BatteryWarranty: limitedto90daysfromdateofpurchase.  
6. AccessoriesWarranty(grasscatchers, snowblades, covers, etc.):Limitedto90days  
fromdateofpurchase.  
7. Warrantydoesnotapplytodamageintransitorincidentsofmisuse, negligence,  
accidents, oralteration. Theuseofpartsorcomponentsotherthanthosesuppliedby  
Dixon Industries VOIDSALLWARRANTY.  
8. The following items are not covered by this warranty policy:  
(a) Pickupanddeliverychargesfortransportationofmowertoandfromanauthorized  
Dixondealer’splaceofbusiness.  
(b) Routinemaintenanceoradjustments.  
(c) Beltsorblades.  
(d) Engines - All engines used on Dixon ZTR mowers are warranted by each individual  
enginemanufacturer.  
(e) Anycostsorexpenseofprovidingsubstituteequipmentwhilerepairworkisbeing  
performed on a warranted mower.  
9. Thereisnootherexpresswarranty. Impliedwarranties, includingthoseofmerchantabil-  
ityandfitnessforaparticularpurposearelimitedtothesamedurationoftheexpress  
warranty and to the extent permitted by law any and all implied warranties are excluded.  
Liabilitiesforconsequentialdamagesunderanyandallwarrantiesareexcluded.  
13  
 
SPECIFICATIONS  
Model ZTR 4515, 4516 & 4518  
Chassis:  
Body:  
Twin 12 gauge side frames and 7 gauge transmission and engine  
base plate.  
All body parts made of high density polyethylene. Dent and  
corrosion resistant.  
Mower Deck:  
42” Deck: 13 GA stamped steel construction-42” cut width  
50” Deck: 11 GA fabricated construction/reinforcement ribs-  
50” cut width  
Blade Drive:  
Electric clutch.  
Transmission:  
Each rear wheel is independently driven by a Hydro Gear IZT  
hydrostatic drive.  
Engine:  
Model 4515:  
15.5 HP Briggs & Stratton Vanguard, 4 cycle, single cylinder,  
overhead valve, air cooled, gasoline, vertical cast iron cylinder,  
pressure lube w/spin-on filter.  
Model 4516:  
Model 4518:  
16 HP Kohler Command 460 cc, single cylinder, overhead valve,  
air cooled, gasoline, full pressure lube with oil filter, vertical  
shaft, aluminum head & block with cast iron cylinder liner.  
18 HP Kohler Command, twin cylinder, overhead valve, air cooled,  
gasoline, full pressure lube with oil filter, vertical shaft, aluminum  
head & block with cast-iron cylinder liners.  
Starting System:  
Tires:  
Electric-key switch operation w/safety interlock blade drive.  
Front 11 x 4.00-5 ribbed tread (16-21 PSI)  
Rear 18 x 8.50 x 8 4 ply turf tread (8-14 PSI)  
Capacities:  
Dimensions:  
Fuel  
Engine Oil  
2.7 gallons  
B&S 1.5 quarts  
Kohler 2 quarts  
Width  
44” maximum track width  
42” to top edge of seat  
72” hitch tab to front bumper  
power unit: 463 lbs  
Height  
Length  
Weight  
with 42” deck 547 lbs  
with 50” deck-603 lbs  
Note: Additional information provided in service instructions under the  
individual component.  
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.  
14  
 
SEAT ADJUSTMENT INSTRUCTIONS  
Models ZTR 4515, 4516 & 4518  
1.  
Grasp seat slide adjuster and  
move it into adjustment position.  
2.  
3.  
Slide seat forward or backward.  
Release seat slide adjuster.  
15  
 
CONTROLS  
CONTROL LEVERS  
Note: For access to the seat, move control levers to neutral  
position and swing them outward.  
TO GO FORWARD  
From neutral position, gently push control levers forward.  
To increase speed, move levers further forward.  
TO GO BACKWARDS  
From neutral position, gently pull control levers toward  
you.  
TURNING  
Turning is controlled by moving one control lever slightly  
forward or rearward of the other.  
To turn left, move left lever rearward of the right lever.  
To turn right, move right lever rearward of the left lever.  
To turn on mower’s own axis (zero turning radius), stop  
and move one lever to reverse position and the other to  
forward position.  
BRAKING  
To brake mower, move both levers in direction opposite  
of travel.  
LEFT TURN OPPOSITE  
Note: The pressure required to operate the mower is very light.  
16  
 
CONTROLS  
PARKING BRAKE:  
The parking brake is designed to hold the  
mower from moving and is not intended for  
use in stopping the mower while it is in  
motion. The engine will stop if the parking  
brake is engaged while the control levers are  
in the drive position.  
Engage parking brake  
before starting engine.  
CAUTION  
TO SET PARKING BRAKE:  
The hand operated parking brake is located on  
the right fender.  
To engage brake, pull lever up (to the rear).  
To release brake, move lever forward (down).  
NOTE: Always set parking brake before dismounting.  
Release parking brake before moving mower.  
TRANSMISSION DRIVE SYSTEM  
Allows the mower to turn on its own axis “ZERO TURNING  
RADIUS. Each lever controls one side of the mower.  
NOTE: The pressure required to operate the mower is very light.  
17  
 
CONTROLS  
BLADE DRIVE:  
Located on the control panel, on operator’s right.  
To engage the mower blade, pull up on the switch.  
To disengage mower blade, push down.  
CIRCUIT BREAKER:  
4515 & 4516  
Protection of the electrical system is by (1) 15 amp  
circuit breaker.  
If circuit breaker trips, push button to reset.  
If this condition repeats, consult dealer for  
inspection and repair.  
THROTTLE CONTROL LEVER:  
Located on control panel to operator’s right.  
Throttle control for engine speed.  
4518  
Choke for engine starting (omit for 4518).  
Throttle control should be set to MAXIMUM or wide  
open setting to insure adequate cooling of the  
engine and to maintain mower deck blade speed  
while mowing.  
CHOKE CONTROL (4518 only):  
Located on control panel to operator’s right.  
Choke for engine starting.  
MOWER DECK CUT HEIGHT LIFT LEVER:  
Located to the left of the operator.  
Controls the cutting height.  
Seven positions of adjustment.  
Move lever in and forward to lower.  
Move lever in and back to raise.  
NOTE: Always use high for transport.  
18  
 
OPERATION INSTRUCTIONS  
The safe and successful operation of the 4500 Series  
will depend upon the operator having the correct  
knowledge of all controls used on the mower and  
making good judgements about the terrain to be  
mowed.  
NEVER allow anyone to operate the mower without  
complete knowledge of all controls and their func-  
tions.  
During initial operation, “learning to drive”, set  
throttle at slow speed.  
Sound judgement by the operator will prevent  
accidents.  
BEFORE OPERATING MOWER:  
1. Read engine manufacturer’s operating and  
maintenance instructions.  
2. Read and observe all safety instructions on  
your mower and in the manual.  
3. Check engine oil.  
4. Check fuel cap to be sure it is in place.  
5. Be sure parking brake is on.  
6. Be sure mower blade drive is off.  
7. Know how to stop engine. (Turn key to off  
position).  
19  
 
OPERATION INSTRUCTIONS  
TOWING TRAILERS AND OTHER ATTACHMENTS:  
Towing a trailer or other attachment that is too heavy could  
damage the drive or cause the mower to become unstable.  
Limit loads to 250 pounds or less with this mower.  
TO FREE WHEEL MACHINE (Unlock Transmission):  
Always turn off engine before engaging or disengaging the hydro  
release (free wheel) lever. Never attempt to move the lever with  
the engine running.  
Rotate the hydro release lever (on top of right hydro) until it is  
held in place by the by-pass keeper. Release parking brake.  
To engage the transmission, pull by-pass keeper, toward rear of  
machine so hydro release lever returns to its normal position.  
NOTE: Before pushing or towing tractor, transmission must  
be unlocked and parking brake released. The tractor  
should never be pulled at more than 2 miles per hour  
or for any appreciable distance.  
20  
 
OPERATION INSTRUCTIONS  
TESTING OF SAFETY INTERLOCK  
SYSTEMS:  
PARKING BRAKE SWITCH TEST:  
a) Swing out control levers  
b) Disengage blade drive switch  
c) Put parking brake in OFF position  
d) Turn ignition switch to START  
Engine should not turn over or attempt to start.  
CONTROL LEVER SWITCH TEST:  
a) Disengage blade drive switch  
b) Put parking brake in ON position  
c) Swing control levers in  
d) Turn ignition switch to START  
Engine should not turn over or attempt to start.  
21  
 
OPERATION INSTRUCTIONS  
TESTING OF SAFETY INTERLOCK  
SYSTEMS:  
BLADE DRIVE SWITCH TEST:  
a) Put parking brake in ON position.  
b) Swing out control levers.  
c) Engage blade drive switch.  
d) Turn ignition switch to START.  
Engine should not turn over or attempt to start.  
SEAT SWITCH TEST:  
a) In a SAFE AREA away from bystanders,  
start the engine.  
b) Leave levers swung out and parking  
brake ON.  
c) Engage blade drive.  
d) Raise slightly off seat.  
ENGINE SHOULD STOP!  
NOTE:  
If Any Safety Check FAILS, Do Not  
Operate The Mower until the system  
has been checked and repaired by an  
Authorized Dixon Dealer.  
22  
 
OPERATION INSTRUCTIONS  
CAUTION  
Engage parking brake before  
starting engine.  
STARTING INSTRUCTIONS (4515 & 4516):  
1. Parking brake must be on, control levers swung out, and blade  
drive disengaged.  
2. Move throttle control to “choke” position if engine is cold, full  
throttle if warm.  
3. Insert ignition key and turn to “start” position. When engine  
starts, release ignition key. Key will return to “run” position.  
4. Move throttle from “choke” to desired speed position.  
5. Release parking brake.  
6. Swing levers in.  
7. Operate the mower per the “CONTROL” instructions on  
Page 16.  
CAUTION Do not operate the engine in an enclosed area  
due to the harmful exhaust gas produced.  
Note:  
When mowing, “blade(s)  
engaged, throttle  
control must be set to  
the MAXIMUM or wide  
open setting to insure  
adequate cooling of the  
engine and to maintain  
mower deck blade  
speed.  
23  
 
OPERATION INSTRUCTIONS  
STARTING INSTRUCTIONS (4518):  
1. Parking brake must be on, control levers swung out, and  
blade drive disengaged.  
2. Engage choke to full position if engine is cold, full throttle if  
warm.  
3. Insert ignition key and turn to “start” position. When  
engine starts, release ignition key. Key will return to “run”  
position.  
4. Move throttle to desired speed position.  
5. Release parking brake.  
6. Swing levers in.  
7. Operate the mower per the “CONTROL” instructions on  
Page 16.  
CAUTION  
Do not operate the engine in an enclosed  
area due to the harmful exhaust gas  
produced.  
Note: When mowing, “blade(s)  
engaged, throttle control must  
be set to the MAXIMUM or wide  
open setting to insure adequate  
cooling of the engine and to  
maintain mower deck blade  
speed.  
24  
 
OPERATION INSTRUCTIONS  
SIDE DISCHARGE OF THE CLIPPINGS:  
In order to achieve optimum performance when  
Side discharging the grass clippings, please read  
and follow the tips listed below. Additional  
information can be found in the troubleshooting  
guide.  
CAUTION  
Be sure that the deflector is properly  
installed on the discharge chute.  
1. Set engine speed control to the wide open or  
full setting.  
2. Do Not Attempt To Cut Grass When It Is Wet.  
Wet grass will clog the underside of the deck  
and discharge area.  
3. If the grass is tall, place the mower deck cut  
height lever in the top or second notch.  
“Initially” overlap cutting swaths instead of a  
full swath with each pass. Some applications  
may require a second cutting.  
4. Keep The Underside Of The Mower Deck Clean.  
Frequent removal of dried grass and dirt will  
allow the clippings to discharge correctly.  
5. Maintain Sharp Blade(s) Throughout The  
CuttingSeason.  
25  
 
OPERATION INSTRUCTIONS  
MOWING WITH A MULCHING ATTACHMENT:  
Mulching or recycling the grass clippings requires a  
totally different mowing approach than would be  
normal when side discharging or bagging the grass.  
There may be instances or conditions where it is not  
possible to hide all the recycled or mulched clippings.  
In order to achieve the best results, please read and  
follow the mulching tips listed below:  
1. Set the engine speed control to the wide open  
or full setting.  
2. Place the mower deck cut height selector in  
either the top or second notch. Never cut more  
than 3/4” to 1” off the grass at any one time.  
Attempting to cut more grass will result in the  
deck plugging and cause the engine to stall.  
3. It may be necessary to cut the lawn twice to  
achieve acceptable mulching performance  
especially on first cuttings or if the lawn is  
heavily fertilized.  
4. Do Not Attempt To Cut Grass When It Is Wet.  
Mulching performance will be very poor under  
wet grass conditions.  
5. Maintain Sharp Blade(s) Throughout The Cutting  
Season. This is very important. Optimal mulch-  
ing performance cannot be obtained with a dull  
or nicked up blade.  
26  
 
OPERATION INSTRUCTIONS  
MOWING WITH A MULCHING ATTACHMENT  
(continued):  
6. Keep the Underside Of The Mower Deck Clean.  
Remove all grass and dirt build-up from the  
underside of the pan, the baffles and deflectors  
after each use.  
7. Alternate mower direction. This will evenly  
disperse the mulched grass clippings over the  
lawn for even fertilization.  
If the mulching quality of the mower does not seem  
to be satisfactory, try one or more of the following  
tips:  
a. Raise the height-of-cut setting on your  
mower.  
b. It may be necessary to cut your grass  
more frequently.  
c. Operate the mower at a slower ground  
speed.  
d. Overlap cutting swaths instead of cutting  
a full swath with each pass.  
e. Mow across the marginal areas a second  
time.  
f.  
CUT HIGH - MOW OFTEN!  
27  
 
OPERATION INSTRUCTIONS  
MOWING WITH A GRASS CATCHER  
ATTACHMENT:  
In order to achieve optimum performance when  
mowing with a grass catching attachment, please  
read and follow the tips listed below.  
1. Set engine speed control to the wide open or  
full setting.  
2. Do Not Attempt To Cut Grass When It Is Wet.  
Wet grass will clog both the underside of the  
deck and the attachment chutes. Empty bags  
often to prevent plugging.  
3. If the grass is tall, place the mower deck cut  
height selector in the top or second notch.  
“Initially” overlap cutting swaths instead of a  
full swath with each pass.  
4. Keep The Underside Of The Mower Deck Clean.  
Frequent removal of dried grass and dirt will  
greatly assist in bagging of the clippings.  
5. Maintain Sharp Blade(s) Throughout The Cutting  
Season. Some grass catching attachments  
require a “high-lift” blade. See your dealer for  
advice on the type of blade(s) needed for your  
mower.  
6. Operate the mower at a slower ground speed  
than when mowing without a grass catching  
attachment.  
28  
 
OPERATION INSTRUCTIONS  
MOWING WITH A GRASS CATCHER  
ATTACHMENT (continued):  
7. Some mowing applications/use of grass  
catchers may require that an optional weight  
box be fitted to the mower to counter the  
weight of grass in the bags. Please consult  
with your dealer for more information  
regarding installation and adding weight to  
the box.  
CAUTION  
•Watch for low hanging branches or other obstacles  
which might hit the catcher top while turning or  
backing the mower.  
•Use care when backing to avoid pushing the grass  
bags into the frame or “hot” exhaust muffler of the  
engine.  
•Disengage blade and stop engine prior to clearing  
grass from either the discharge chute or grass  
catcher components.  
•Keep all attachment bolts tight.  
Do Not operate the mower with the grass catching  
attachment partially removed.  
•Important: Do Not leave clippings in the bags while  
the mower is stored. Damp grass clippings are a fire  
hazard if left in the bag.  
29  
 
OPERATION INSTRUCTIONS  
GRASS HEIGHT & CUTTING SUGGESTIONS:  
Do not attempt to cut grass when it is wet.  
If the grass is tall, place the mower deck cut height  
lever in the top or second notch. “Initially” overlap  
cutting swaths instead of a full swath with each pass.  
Some applications may require a second cutting.  
Keep the underside of the mower deck clean.  
Maintain sharp blades throughout the cutting season.  
As a rule of thumb, never cut off more than 1/3 of  
the total grass blade length. Correct mowing height  
can reduce weeds and disease by 50% to 80%.  
The following grass cut heights are based on  
adequate moisture conditions and normal thatch  
buildup in a healthy lawn. Some locations and  
applications may require slightly different cut heights.  
If in doubt, consult your local lawn professional for  
assistance.  
Grass Types  
Bermudagrass  
Bluegrass  
Buffalograss  
Ryegrass  
Tall Fescue  
Zoysiagrass  
Best Cut Heights  
1 - 2”  
2 - 3”  
11/2 -3”  
2 - 3”  
3-31/2”  
1 - 3”  
30  
 
CARE & MAINTENANCE  
CAUTIO N  
Before performing any maintenance, turn off engine,  
allow to cool & remove key.  
Use extreme care when working on machinery.  
Do not wear watch or jewelry.  
Do not wear loose fitting clothes, and observe all  
common safety practices with tools.  
MAINTENANCE SCHEDULE  
Check deck serpentine belt...................................after 20 hours break-in  
Check crankcase oil level...............................................before each use  
Clean grass & debris from muffler & manifold area..........before each use  
Check air intake screen....................................................after each use  
Clean grass under deck....................................................after each use  
Check tire pressure.........................................................every 10 hours  
Inspect blades for sharpness............................................every 10 hours  
Clean air filter element....................................................every 25 hours  
Grease all zerks..............................................................every 50 hours  
Check all belts................................................................every 50 hours  
Change engine crankcase oil (Kohler engine) ...............(5 hours break-in)  
every 100 hours  
Change engine oil filter (Kohler engine)...........................every 100 hours  
Change engine crankcase oil (B&S engine)...................(5 hours break-in)  
every 50 hours  
Change engine oil filter (B&S engine)................................every 50 hours  
Replace air filter element..............................annually or every 100 hours  
31  
 
CARE & MAINTENANCE  
ENGINE:  
For complete maintenance and operating information of the engine,  
please refer to the maintenance instructions furnished by the  
engine manufacturer and included in your Zero Turn Radius mower  
information packet.  
BATTERY:  
Battery contains sulfuric acid electrolyte which  
is poisonous and corrosive.  
CAUTION  
•This is a maintenance-free battery and the fluid level cannot be  
checked.  
•Charge battery if required.  
OFF SEASON BATTERY STORAGE:  
•DO NOT remove battery from mower.  
•Clean top of battery and terminals with baking soda and water.  
•Identify each cable so they can be reconnected to the correct  
terminal.  
•Disconnect cables from terminals. ALWAYS disconnect ground cable  
first and reconnect last.  
•Charge battery.  
TIRES:  
Correct tire pressure is essential for efficient operation of the mower.  
Check tire pressure periodically. Inflate tires to the pressure listed  
below.  
Front tires  
Rear tires  
11 x 4.00 X 5  
18 x 8.50 x 8  
16-21 lbs.  
8-14 lbs.  
Lug nuts or lug bolts should be checked regularly for tightness.  
32  
 
CARE & MAINTENANCE  
CUTTER BLADE MAINTENANCE:  
CAUTION Stop engine and remove ignition key  
for safety. Wear heavy, thick gloves  
when holding onto cutter blade, avoid  
the sharp edge of the blade.  
Check sharpness of mower blades after every 10  
hours of operation. Observe proper blade position  
prior to removal.  
1. Safely raise front of mower.  
2. Hold or block blade from  
turning.  
3. Loosen blade bolt and remove  
blade.  
4. When replacing blade, tighten  
blade bolt securely. Refer to  
diagram. Be sure blade is  
centered on pilot before  
tightening nut to 60 ft. lbs.  
Blades should be discarded when worn excessively.  
DANGEROUS!  
DO NOT USE  
BLADE IN THIS  
CONDITION!  
New Blade  
When notch starts,  
discard blade  
33  
 
CARE & MAINTENANCE  
BELTS:  
Check belts every 50 hours. Replace any belts found to  
be in poor condition.  
BELT TENSION:  
42” Deck  
Mower Deck Serpentine Belt-P/N 6109  
Manual adjustment. Refer to illustration below.  
Engine to Mower Deck Belt-P/N 5861  
Auto tensioner with spring loaded idler.  
No adjustment required.  
50” Deck  
Mower Deck Serpentine Belt-P/N 1300  
Manual adjustment. Refer to illustration below.  
Engine to Mower Deck Belt-P/N 7174  
Auto tensioner with spring loaded idler.  
No adjustment required.  
Idler Shock  
Mount  
Idler Weldment  
“L” Rod  
Hex Nut  
3/4”  
(42”/50” Serpentine)  
Tighten or Loosen  
Hex Nut to achieve  
this dimension  
34  
 
CARE & MAINTENANCE  
FORWARD TRAVEL SPEED ADJUSTMENT  
1. Drive machine until hydrostats have warmed  
up.  
2. Drive on a smooth, level surface with both  
levers in top speed position.  
3. If one side now drives slightly faster than the  
other, adjust lever stop washer P/N 5760 on  
that side to reduce forward range of control  
lever. If levers are now uneven at top speed,  
loosen control lever mounting nut. Rotate  
lever to be even with other side and tighten  
nut.  
35  
 
CARE & MAINTENANCE  
NEUTRAL ADJUSTMENT  
DRIVEMACHINEUNTILHYDROSTATSHAVEWARMEDUP.  
WITHENGINERUNNINGANDTHEPARKINGBRAKEOFF,SWING  
OUTTHECONTROLLEVERS. IFMACHINESTARTSTOCREEP,  
FOLLOWTHEINSTRUCTIONSBELOW.  
1.Stop the engine, engage parking brake and raise rear of frame  
with jack or blocks so that rear tires do not contact the ground.  
2.Swing out the control levers, start the engine and release the  
parking brake.  
3.Raise the seat to access hydro control linkage. If right wheel  
creeps, adjust right side linkage and vice-versa. Use procedure  
below.  
a. Loosen jam nuts on ends of the coupler P/N 7736.  
b. If right wheel is creeping forward, turn couplercounter-  
clockwise until neutral is achieved (clockwise for left side).  
If right wheel is creeping backward, turn coupler clockwise  
until neutral is achieved (counter-clockwise for left side).  
c. Tighten jam nuts against coupler.  
36  
 
CARE & MAINTENANCE  
NEUTRAL ADJUSTMENT (continued)  
4. Stop engine and remove rear of machine from jack or  
blocks.  
5. Drive machine with both levers in top speed position. If  
one side now drives slightly faster than the other, adjust  
lever stop washer P/N 5760 on that side to reduce  
forward range of control lever. If levers are now uneven  
at top speed, loosen control lever mounting nut. Rotate  
lever to be even with other side and tighten nut.  
37  
 
CARE AND MAINTENANCE  
MOWER DECK LEVELING PROCEDURE:  
1. Place mower on a smooth, level surface and  
check tire pressures to insure correct stance.  
Tires should be inflated as follows.  
Front: 16 - 21 lbs  
Rear: 8 - 14 lbs  
2. Turn each outer blade tip to align with the  
deckin a side to side manner.  
3. Measure from the floor surface up to the  
bottom of the blade tip on the discharge side  
of the mower. Retain this measurement. Move  
to the opposite side and check to see if that  
measurement is the same. If adjustment is  
required, turn nut on one or both of the rear  
L-rods until both measurements are equal.  
4. Turn each outer blade tip to align with the  
deck in a front to rear manner.  
5. Measure from the floor surface up to the  
bottom of the blade tips at both the front and  
rear of the blades. Rear of blade tips should  
be to 1/8" to 1/4" higher than the front of  
blade tips. If adjustment is necessary, turn  
nut on front L-rod.  
38  
 
CARE & MAINTENANCE  
MOWER DECK LEVELING PROCEDURE  
(continued):  
NOTE: This will place the mower deck in a base  
measurement position. Additional  
adjustment may be required to achieve  
desired cut for the type of grass or  
conditions involved.  
39  
 
CARE & MAINTENANCE  
DECK REMOVAL:  
1. Place cut height lever in lowest cut position.  
2. Pull belt idler back to allow belt to be removed from idler  
pulley and electric clutch pulley.  
3. Remove hair pin cotter and washer from one end of deck  
support cross shaft. Note location of remaining shim washers  
used between chassis and mower deck plates. Slide shaft from  
chassis and mower deck.  
4. Remove hair pin cotter and washer from each deck L-rod.  
Remove L-rods from lift arms. At this point, deck will drop  
down.  
5. Carefully raise and support front of chassis. Slide mower deck  
to either side for removal. (Reverse procedure to reinstall deck  
assembly.)  
NOTE:  
When deck is reinstalled on frame, check that belt is  
correctly routed in the grooves of all pulleys and that  
belt idler is applying tension to the back side of the  
belt.  
40  
 
CARE & MAINTENANCE  
LUBRICATION:  
CHASSIS:  
(5) grease zerks  
LOCATIONS:  
(1) each front wheel caster  
(1) each mower deck hub  
SERVICE INTERVALS:  
Every 50 hours of operation  
or once per season.  
RECOMMENDED GREASE: Name brand wheel bearing  
or multi-purpose grease  
(3 pumps each)  
BRAKE SYSTEM:  
Use penetrating lubrication to keep all brake parts func-  
tioning smoothly. Lubricate at locations illustrated.  
41  
 
CARE & MAINTENANCE  
HOT oil may cause burns. Allow engine to  
cool before draining oil.  
CAUTION  
CHANGING THE ENGINE OIL:  
1. The “Dapco” oil drain valve is located on the left  
side of the engine crankcase (Model 4515 &  
4518) and on the right side of the engine  
crankcase (Model 4516).  
2. Place a suitable container under the drain valve  
hose.  
3. To drain, turn hex head valve stem counter-  
clockwise with a 10mm wrench or socket. Open  
to full open (approximately 7 turns).  
4. After engine is drained, tighten hex stem.  
5. Change oil filter.  
6. Fill with oil (see steps on next page).  
NOTE:  
Refer to engine manufacturer’s recommenda-  
tions for frequency of oil changes.  
Hex Head Valve  
Stem  
42  
 
CARE & MAINTENANCE  
HOT oil may cause burns. Allow  
engine to cool before draining oil.  
CAUTION  
OIL FILL:  
1. Clean any spilled oil from engine and chassis.  
2. Refill engine with type, and quantity of oil  
recommended by the engine manufacturer in  
engine literature.  
NOTE:Engine oil changes on the 4500 Series  
Models will require replacement of the oil  
filter. These filters may be available from  
your local Dixon Dealer.  
PLEASEDISPOSEOFUSEDOILS ATPROPERCOLLECTIONCENTERS.  
PROTECTYOURENVIRONMENT.  
43  
 
CARE & MAINTENANCE  
ELECTRICAL SYSTEMS:  
Keep all connections clean and tight.  
CLEANING THE MOWER:  
Wash mower periodically. Clean above and below  
deck.  
High pressure washing and alkaline based soaps can  
cause damage to bearings and other parts of the mower.  
After washing your mower, start the engine and engage  
the mower deck for a few minutes to disperse any water  
that may have accumulated in bearings, pulleys or fans.  
Note: Allow mower to cool before washing. If bearings  
are hot, they will draw moisture inside as they  
dry and cause corrosion.  
SERIAL NUMBERS:  
The serial number is located on frame at rear of  
engine.  
WARRANTY:  
Refer to warranty information (page 13).  
PARTS/SERVICE:  
See your Dixon dealer for replacement parts,  
warranty or service.  
44  
 
CARE & MAINTENANCE  
NOTES  
45  
 
STANDARD SERVICE PARTS LIST  
42” Deck  
~Blades~  
Hi-Lift - P/N 8688 (Standard)  
Lo-Lift - P/N 6236  
~Belts~  
Engine to Mower Deck - P/N 5861  
Serpentine - P/N 6109  
Engine to Transmission - P/N 5768  
50” Deck  
~Blades~  
Hi-Lift - P/N 9444 (Standard)  
Lo-Lift - P/N 9443  
~Belts~  
Engine to Mower Deck - P/N 7174  
Serpentine - P/N 1300  
Engine to Transmission - P/N 5768  
46  
 
STANDARD SERVICE PARTS LIST  
BRIGGS & STRATTON AIR AND OIL FILTERS  
Refer to Briggs & Stratton Engine Operator’s Manual  
for correct service intervals for engine oil changes and  
air filter maintenance.  
Protect your engine investment, use only original  
equipment filters. Refer to the Briggs & Stratton  
Engine Operator’s Manual or ask your dealer for  
correct replacement parts.  
KOHLER AIR AND OIL FILTERS  
Refer to Kohler Engine Operator’s Manual for correct  
service intervals for engine oil changes and air filter  
maintenance.  
Protect your engine investment, use only original  
equipment filters. Refer to the Kohler Engine  
Operator’s Manual or ask your dealer for correct  
replacement parts.  
47  
 
TROUBLESHOOTING  
1. ENGINE WON’T TURN OVER  
Mower blades engaged- - - - - - - - - - - - - - - - - - - disengage blades  
Parking brake not on- - - - - - - - - - - - - - - - - - engage parking brake  
Circuit breaker trips- - - - - - - - - - - - - - - - - - - - - - - - -reset breaker  
Dead battery- - - - - - - - - - - - - - - - - - - - - - - - - - charge or replace  
Solenoid- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - consult dealer  
Ignition switch- - - - - - - - - - - - - - - - - - - - - - - - - - - - consult dealer  
Starter- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - consult dealer  
2. ENGINE WILL TURN OVER BUT WON’T START  
No fuel- - - - - - - - - - - - - - - refuel and/or clean or replace fuel filters  
3. HARD TO START ENGINE  
Fuel line clogged- - - - - - - - - - - - - clean fuel line and check fuel filter  
Faulty fuel pump- - - - - - - - - - - - - - - - - - - - - - - - - - consult dealer  
4. ENGINE STARTS BUT CUTS OUT  
Water in fuel- - - - - - - - - - - - - - -drain old fuel-replace with new fuel  
Clogged fuel line- - - - - - - - - - - - - - - - - - - - - - - - - - check fuel filter  
Fuel tank vent plugged- - - - - - - - - - - - - - - - - - - - - -clean fuel vent  
Faulty fuel pump- - - - - - - - - - - - - - - - - - - - - - - - - - consult dealer  
5. ENGINE OVERHEATED  
Air intake screen or fins clogged- - - - - -clean intake screen and fins  
Oil level too low or too high- - - - - - - - - - - - - - - - - - - -adjust oil level  
Running engine too slow - - - - - - - - - - - - - - - - - -run engine faster  
48  
 
TROUBLESHOOTING  
6. ENGINE RUNS BUT MOWER WON’T MOVE FORWARD  
Drive belt broken or slipping- - - - - - - - - - - - - - - - replace drive belt  
Transmission oil low- - - - - - - - - - - - - - - - - - - - - - - - - - - - add oil  
Damaged transmission- - - - - - - - - - - - - - - - - - - - - -consult dealer  
Transmission by-pass may be engaged- - - - disengage(see page 20)  
7. MOWER LOSES POWER OR TRANSMISSION OVERHEATS  
Engine air filter-- - - - - - - - - - - - - - - - - - - - - - - - - - clean or replace  
Transmission damage- - - - - - - - - - - - - - - - - - - - - - -consult dealer  
8. ENGINE STALLS WHEN BLADES ARE ENGAGED  
Operator not on seat- - - - - - - - - - - - - - - - - - - - - - - - - -sit on seat  
Faulty interlock system- - - - - - - - - - - - - - - - - - - - - - consult dealer  
Fauty blade spindle bearing - - - - - - - - - - - - - - - - - - consult dealer  
Deck drive belt not properly routed- - - - - - - - - - - - - - - - - - reroute  
Blades blocked by foreign material - - - - - - - - - - - clean under deck  
9. DRIVE SYSTEM  
Mower pulls to side- - - - - - -check tire inflation/adjust control linkage  
Mower creeps in neutral- - - - - - - - - - - - - - - - adjust control linkage  
Low on power- - - - - - - - - - - - - - - - - - - - - - - - - -check belt tension  
10. CUT QUALITY  
Cut uneven left to right- - - - - - - - - - - -check tire inflation/level deck  
Ends of grass blades are ragged- - - - - - - - - - - - - - sharpen blades  
Poor dispersal of grass- - - - - - - - - - clean deck/check for loose belt  
Skips in spots- - - - - - - - - - -check for loose belt/slow ground speed  
49  
 
NOTES  
50  
 
OWNER’S  
INFORMATION  
DIXON INDUSTRIES, INC.  
a BLOUNT International Inc. Co.  
P.O. Box 1569  
Coffeyville, Ks 67337-0945  
620-251-2000  
FAX 620-251-4117  
Date of Purchase  
Mower Model Number  
Mower Serial Number  
Purchased From  
Name  
Address  
DATE OIL CHANGED  
DATE ENGINE TUNED  
 
ZTR®Mowers  
The engine exhaust from this product  
contains chemicals known to the State of  
California to cause cancer, birth defects or  
other reproductive harm.  
WARNING:  
Dixon® and ZTR® are registered trademarks of  
Dixon Industries, Inc.  
DIXON INDUSTRIES, INC.  
a BLOUNT International Inc. Co.  
P.O. Box 1569  
Coffeyville, Ks 67337-0945  
620-251-2000  
4500 Series  
4515, 4516 & 4518  
Part No. 13782-0503  
 

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