Snapper Lawn Mower FRP216016 User Manual

Safety Instructions & Operator’s Manual for

21” STEEL DECK

WALK MOWERS

SERIES 16

PROPELLED MODELS

FRP216016

MODEL NUMBER EXPLANATION

MODEL DESIGNATION

SELF-PROPELLED

CUTTING WIDTH

SERIES DESIGNATION

ENGINE HORSE POWER

F – Flange Type Deck

P – Self Propelled Model

R – Recycling Model

60 – 6.0 HP (Engine Horse Power)

16 – Series Designation

21 – 21” Cutting Width

Thank you for buying a SNAPPER Product! Before operating your Walk Behind, read this manual carefully and pay

particular attention to the “IMPORTANT SAFETY INSTRUCTIONS” on Pages 2 & 3. Remember that all power

equipment can be dangerous if used improperly. Also keep in mind that SAFETY requires careful use in accordance

with the operating instructions and common sense.

SNAPPER INC.

MANUAL No. 7-3136 (I.R. 9/2/99)

IMPORTANT SAFETY INSTRUCTIONS

OPERATION

MAINTENANCE AND STORAGE

1. DO NOT put hands or feet near or under rotating

parts. Keep clear of discharge area while engine is

running.

1. DO NOT store mower or fuel container inside

where fumes may reach an open flame, spark or

pilot light such as in a water heater, furnace,

clothes dryer or other gas appliance. Allow

engine to cool before storing machine in an

enclosure. Store fuel container out of reach of

2. STOP engine when crossing gravel drives, walks, or

roads, and under any conditions where thrown

objects might be a hazard.

3. Mow only in daylight or good artificial light.

4. DO NOT operate mower while under the influence

of alcohol or drugs.

5. After striking a foreign object or if mower vibrates

abnormally, STOP the engine, disconnect and

secure spark plug wire. Inspect the mower for any

damage and repair the damage.

6. DO NOT mow near drop offs, ditches or

embankments. Operator could lose footing or

balance.

7. STAY ALERT for holes and other hidden

hazards. Tall grass can hide obstacles. Keep

away from ditches, washouts, culverts, fences

and protruding objects.

children in

building.

well ventilated, unoccupied

2. Keep mower and engine free of grass, leaves or

excess grease to reduce fire hazard and engine

overheating.

3. When draining fuel tank, drain fuel into an

approved container outdoors and away from

open flame.

4. Keep all bolts, especially blade bolts, nuts and

screws properly tight. Check that all cotter pins

are in proper position.

5. Always provide adequate ventilation when

running engine. Engine exhaust gases contain

carbon monoxide, a deadly poison.

8. DO NOT mow on wet grass. Always be sure of

your footing. Keep a firm hold on the handle

and walk, never run. Slipping could cause

injury.

9. DO NOT leave the machine with the engine

running. STOP BLADE and STOP ENGINE

before leaving the operators position for any

reason.

10. Before cleaning, repairing or inspecting make

certain engine, blade and all moving parts have

STOPPED. Disconnect and secure spark plug

wire away from plug to prevent accidental

starting.

11. STOP engine and wait until the blade comes to

complete STOP before removing grass bag

and/or clearing grass.

12. DO NOT operate mower without the entire grass

catcher or guards in place. DO NOT point

discharge at people, passing cars, windows or

doors.

13. Slow down before turning.

14. Watch out for traffic when near or crossing

roadways.

6. Service engine and make adjustments only

when engine is stopped. Removed spark plug

wire from spark plug and secure wire away from

spark plug to prevent accidental starting.

7. DO NOT change engine governor speed

settings or overspeed engine.

8. Check grass bag assembly frequently for wear

or deterioration to avoid thrown objects and

exposure to moving parts. Replace with new

bag if loose seams or tears are evident. Replace

slider or bag adapter if broken or cracked.

9. Mower blades are sharp and can cut. Wrap the

blades or wear heavy leather gloves and use

CAUTION when handling them.

10. DO NOT test for spark by grounding spark plug

next to spark plug hole; spark plug could ignite

gas exiting engine.

11. Have machine serviced by an authorized

SNAPPER dealer at least once a year and have

the dealer install any new safety devices.

12. Use only genuine SNAPPER replacement parts

to assure that original standards are

maintained.

15. DO NOT operate engine in enclosed areas.

Engine

exhaust

gases

contain

carbon

monoxide, a deadly poison.

TABLE OF CONTENTS

IMPORTANT SAFETY INSTRUCTIONS..............................................2 - 3

TABLE OF CONTENTS ............................................................................ 4

SECTION 1 - FAMILIARIZATION.............................................................. 5

SECTION 2 - OPERATING INSTRUCTIONS.........................................6-8

Pre-start Checklist ............................................................................................... 6

Starting & Stopping Engine & Blades................................................................ 6

Starting & Stopping Wheel Drive ....................................................................... 7

Handle Height Adjustment.................................................................................. 7

Cutting Height Adjustment ................................................................................ .7

Recycling Operation............................................................................................ 8

Baffle Adjustment ................................................................................................ 8

Installation of Grass Catcher.............................................................................. 8

SECTION 3 - MAINTENANCE INSTRUCTIONS..................................9-10

Change Engine Oil............................................................................................... 9

Check Transmission Grease.......................................................................... 9-10

Check Mower Blade........................................................................................... 10

Check Engine Drive Belt ................................................................................... 10

Check Transmission Poly-V Belt...................................................................... 10

Service - Annually.............................................................................................. 10

Engine.............................................................................................................. 10

Air Filter ........................................................................................................... 10

Engine Oil........................................................................................................ 10

Storage Procedure............................................................................................. 10

SECTION 4 - ADJUSTMENTS AND REPAIR....................................11-17

Mower Blade Replacement ............................................................................... 11

Blade Sharpening ......................................................................................... 11-12

Wheel Drive Control Adjustment...................................................................... 12

Driven and Drive Disc Service.......................................................................... 12

Cleaning Drive Disc and Driven Disc............................................................ 13

Drive Spring Repair/Replacement................................................................. 13

Driven Disc Adjustment ............................................................................ 13-14

Driven Disc Replacement............................................................................... 14

Driven Disc Bearing Replacement................................................................ 15

Hex Shaft Bearing Replacement ................................................................... 16

Belt Service ........................................................................................................ 16

Engine Drive Belt Replacement ............................................................... 16-17

Transmission Poly-V Belt Replacement....................................................... 17

TROUBLESHOOTING ............................................................................ 18

SERVICE SCHEDULE ............................................................................ 19

WARRANTY............................................................................................ 20

PRIMARY MAINTENANCE ................................................................21-24

Section 1 - FAMILIARIZATION

FIGURE 1.1

1.1 INTRODUCTION

1.2 NOMENCLATURE

This manual has been prepared for the operators of

the SNAPPER WALK BEHIND MOWERS. Its

purpose, aside from recommending operating and

routine service requirements, is to promote safety

through the use of accepted operating practices.

Read, Understand and Follow the “IMPORTANT

SAFETY INSTRUCTIONS” on Pages 2 & 3 of this

manual and all safety messages on the mower and

attachments before operating the mower.

The nomenclature drawing above, Figure 1.1, shows

the essential parts of the SNAPPER WALK BEHIND

MOWERS. It is recommended that all operators of

the mower become thoroughly familiar with the

controls, parts and operation of the mower before

operating. Specific details involving the engine are

found in the separate engine owner’s manual. Study

these manuals before operating and keep both handy

for future reference.

Section 2 - OPERATING INSTRUCTIONS

2.1 PRE-START CHECK LIST

2.1.6. Clean exterior surfaces of cutting deck and

Make the following checks and perform the service

required before each start-up.

2.1.1. Check guards, deflectors, grass bag, adapter

and covers to make sure all are in place and securely

tightened.

engine of any accumulation of spilled fuel, dirt, grass,

oil, etc. Keep engine air intake screen and cooling

fins clear at all times.

2.2 STARTING & OPERATION

2.2.1. ENGINE & BLADE

2.1.2. Check blade control and wheel drive control to

insure they work freely. See Figure 2.1.

(Primer Models)

1. Move engine speed control to the “Fast” (Rabbit)

position. See Figure 2.3.

RECYCLING MODEL SHOWN

(ROPE START MOUNTED ON

RIGHT SIDE OF HANDLE)

NOTE: Stop the engine (and blade) by releasing the

blade control.

CATCHER MODEL SHOWN

(ROPE START MOUNTED

ON LEFT SIDE OF HANDLE)

BLADE

CONTROL

WHEEL DRIVE

BLADE

CONTROL

WHEEL

DRIVE

FIGURE 2.1

CONTROL

2.1.3. Check cutting height. Adjust to desired height.

2.1.4. Check engine oil and add oil as needed to bring

level up to the full mark. Refer to Engine Owner’s

Manual for oil specifications. See Figure 2.2.

ENGINE SPEED

CONTROL

(SHOWN IN FAST

FIGURE 2.3

2. Push primer button three times to start a cold

engine. NOTE: Do not use primer button to start

warm engine.

3. Pull blade control against handle.

4. Pull rope start handle to crank engine.

5. After engine starts, allow a brief warm-up until

engine runs smooth.

FIGURE 2.2

2.1.5. Add fuel to tank after pushing the mower

outside where fumes can safely dissipate. Make sure

cap is tightened after refueling. Refer to Engine

Owners Manual for specifications.

Section 2 - OPERATING INSTRUCTIONS

2.2.2. PROPELLING MOWER

2. Move upper mower handle up or down until the

desired position is achieved.

3. Tighten the lower nuts on each lower handle to

maintain desired position.

(Self Propelled Models Only)

1. Move ground speed control to the desired speed

position. See Figure 2.4.

2. Start engine. Refer to Section “Starting &

Operation”.

3. Move wheel drive control against handle to

engage wheel drive and propel mower forward.

Forward speed can be adjusted while the mower is

moving by changing position of the ground speed

control. See Figure 2.4.

WARNING

Stop engine and mower blade by releasing the blade

control before adjusting cutting height.

2.5 CUTTING HEIGHT ADJUSTMENT

RECYCLING MODEL SHOWN

MOVE GROUND

1. Pull the height adjusting latch outward and move

to desired cutting height. See Figure 2.6.

(ROPE START MOUNTED ON

SPEED CONTROL TO

RIGHT SIDE OF HANDLE)

DESIRED POSITION

(FAST)

LOWEST CUTTING

SIXTH SPEED

POSITION

LATCH

HEIGHT

SIXTH

(SLOW)

FIRST SPEED

POSITION

FIRST

WHEEL DRIVE

CONTROL

HIGHEST

CUTTING

HEIGHT

BLADE

CONTROL

FIGURE 2.4

2.3 STOPPING

Stop engine and blade by releasing the blade

control. Stop forward motion of mower by releasing

the wheel drive control.

FIGURE 2.6

2. Set all wheels at the same cutting height. The

highest cutting position is Notch 6. The lowest

cutting position is Notch 1. See Figure 2.7.

2.4 HANDLE HEIGHT ADJUSTMENT

The height of the mower handle can be adjusted as

follows:

1. Loosen the lower nuts on each lower handle as

shown in Figure 2.5.

LATCH

POSITIONS

HIGHER

LOWER

HANDLE

LOWER

CUTTING HEIGHT SETTINGS

LOOSEN LOWER

NUTS ON EACH

LOWER HANDLE

FIGURE 2.7

FIGURE 2.5

Section 2 - OPERATING INSTRUCTIONS

WARNING

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for all

components to cool.

HOLE DESIGNATES TOP OF

BAFFLE (ALWAYS KEEP

HOLE IN UP POSITION)

FRONT

DECK

BAFFLE

FRONT DECK BAFFLE (SHOWN

IN HIGHEST POSITION)

WING

NUTS

WING NUT

2.6 RECYCLING OPERATION

MOVE BAFFLE UP FOR

MULCHING GRASS

NOTE: For best recycling results, cut up to a maximum of

1/3 of grass blade length and recycle ONLY when grass is

dry.

1. Set all wheels in the highest cutting position

(Notch 6).

2. Move engine speed control to “FAST” (Rabbit)

position.

3. Move ground speed control to slowest speed

setting.

MOVE BAFFLE DOWN

FOR GRASS BAGGING

FRONT CUTOUT OF DECK

FIGURE 2.8

4. Proceed mowing slowly. If grass is very dense,

lower each rear wheel latch one notch lower than

the front wheel latches to improve recycling

performance.

2.8 INSTALLATION of GRASS CATCHER

Install grass catcher by sliding connector over flange of

adapter. See Figure 2.9. Attach grass bag hooks over

middle handle cross bar. See Figure 2.10.

2.7 ADJUSTING FRONT DECK BAFFLE

(Models with an “F” prefix in model number)

(Example: FR215012)

POSITION BAG

The front of the cutting deck on these models has been

modified with an open area. This allows the blade to

have more direct contact with the grass and allows

more air flow into deck chamber. The adjustable baffle

should be secured in the lowest position when using a

grass bag. The baffle should be secured in the highest

position when mulching grass.

BETWEEN HANDLES

SLIDE

CONNECTOR

DOWN OVER BAG

ADAPTER FLANGE

NOTE: Under certain conditions, when mulching, some

grass may blow out from under front of baffle. This is

normal but, the amount of grass blowing out can be

reduced. Lower baffle slightly to reduce the amount of

grass blow out.

CONNECTOR

BAG

ADAPTER

1. Stop engine.

2. Loosen wing nuts that secure front deck baffle.

See Figure 2.8.

3. Lower the adjustable baffle to the lowest position

when using a grass bag. Raise the baffle to its

highest position when mulching grass. Take care to

keep the baffle’s lower edge parallel to the bottom of

the deck. See Figure 2.8.

FIGURE 2.9

4. Retighten wing nuts securely.

WARNING

DO NOT operate without entire Grass Catcher or

guard in place. Grass Catcher components are

subject to deterioration during normal use. Inspect

frequently and replace worn or damaged components

immediately.

MIDDLE

HANDLE

CROSS

BAR

ATTACH BAG HOOKS

OVER MIDDLE HANDLE

CROSS BAR

FIGURE 2.10

Section 3 – MAINTENANCE

3.1 INTRODUCTION

3.2.2. CHECK GREASE LEVEL IN TRANSMISSION

1. Remove transmission fill plug. Roll machine

forward or backward while looking down into plug

hole.

2. If liquid grease IS NOT visible on the input gear

(the small gear below the plug hole), add an

amount, to cover gear, of Snapper “00” grease. See

Figure 3.2.

To retain the quality of the mower, use genuine

SNAPPER replacement parts only. Contact a local

SNAPPER dealer for parts and service assistance.

For the correct part or information for a particular

mower, always mention model and serial number.

3.2 SERVICE - AFTER FIRST 5 HOURS

3.2.1. CHANGE ENGINE OIL

WARNING

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for all

components to cool.

FILL PLUG

1. Refer to Engine Manual for proper oil

specifications and procedures.

2. For simplest/cleanest oil change, loosen lower

handle wing nuts and stand mower up on lower

handle as shown in Figure 3.1. Drain oil through

dipstick tube into a container.

FIGURE 3.2

NOTE: Snapper “00” Grease (Part No. 2-9443) is available

at your SNAPPER dealer.

(Continued on Next Page)

FIGURE 3.1

Section 3 – MAINTENANCE

3.2.2. CHECK GREASE LEVEL IN TRANSMISSION

(Continued from previous page)

NOTE: Do not spill grease or oil on surface of drive disc.

See Figure 3.3.

3.2.4 CHECK ENGINE DRIVE BELT

1. Visually check engine drive belt for cracking,

fraying, severed or belt strands exposed. If worn or

damaged, replace belt before operating mower.

3. Reinstall transmission plug.

4. Check grease level after each 25 hours of

operation.

3.2.5 CHECK TRANSMISSION POLY-V BELT

1. Visually check poly-v belt for cracking, fraying,

severed or belt strands exposed. If worn or

damaged, replace belt before operating mower.

KEEP DRIVE DISC CLEAN !

RECOMMENDED

BLADE RETAINING

CAP SCREW

TORQUE VALUE

SHOULD BE 30 TO

40 FT. LBS.

FIGURE 3.4

3.3 SERVICE - ANNUALLY

Perform all maintenance as described in the “Service

Schedule” section of this manual.

FIGURE 3.3

3.3.1. Engine

Service engine according to engine owner’s manual.

3.3.2. Air Filter

Refer to engine owner’s manual for service instructions.

3.3.3. Engine Oil

WARNING

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for

all components to cool. Wear heavy leather gloves

when handling or working around cutting blades.

Blades are extremely sharp and can cause severe

injury.

Refer to engine owner’s manual for service instructions.

3.4 STORAGE PROCEDURE

Refer to the Engine Owner’s Manual for directions regarding

engine storage preparations. Prepare the mower for “end of

season” storage as follows:

1. Drain fuel from fuel tank and let engine run until all

fuel is out of the carburetor.

2. Disconnect and remove the spark plug wire

away from spark plug before any other preparations

are made!

3. Tape all openings closed to prevent spraying water

into exhaust or air intakes during washing.

4. Tilt mower up on its rear wheels and thoroughly

clean the underside of the deck. Do not tilt mower with

spark plug or carburetor down. Scrape away any

accumulation of grass with a putty knife and or wire

brush.

IMPORTANT: DO NOT tip machine with carburetor or

spark plug down. Oil from crankcase will saturate the air

filter and cause the engine to be hard to start or not start

at all. If contamination does occur, the air filter will have to

be replaced.

3.2.3 CHECK MOWER BLADE

1. Disconnect spark plug wire and secure end away

from plug.

2. Tilt mower up on its rear wheels for access to

the blade cap screw. Do not tilt mower with spark

plug or carburetor down. See Figure 3.4.

3. Check torque of blade retaining cap screw.

Recommended torque should be 30 to 40 ft. lbs.

See Figure 3.4.

5. Lubricate all exposed metal with a light coating of oil

to prevent corrosion.

6. On self-propelled models, loosen wing nuts on

ground speed control rod before folding handles.

7. Loosen handle knobs. Carefully fold the handles

forward, “flexing” the control cables to prevent cable

damage.

4. Check blade for sharpness, wear and damage.

Refer to Section “Blade Wear Limits”.

8. Store the mower in a shed or other dry area,

protected from weather.

Section 4 - REPAIR & ADJUSTMENTS

2. Replace the blade if it is badly chipped, bent,

WARNING

noticeably out of balance or has cracks or notch in

either tip. See Figure 4.1 & 4.1A. Replace with new

blade.

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for all

components to cool. Wear heavy leather gloves when

handling or working around cutting blades. Blades

are extremely sharp and can cause severe injury.

WARNING

DO NOT use a cutting blade that shows signs of

excessive wear or damage. Refer to Section

“MOWER BLADE REPLACEMENT” for proper blade

inspection and service procedures.

4.1 MOWER BLADE REPLACEMENT

4.1.1. STANDARD BLADE WEAR LIMIT

1. Inspect blade frequently for signs of excessive wear

or damage. See Figure 4.1.

4.1.2. BLADE SHARPENING

1. Disconnect spark plug wire and secure end away

from plug.

NEW BLADE

IMPORTANT: DO NOT tip machine with carburetor or

spark plug down. Oil from crankcase will saturate the air

filter and cause the engine to be hard to start or not start at

all. If contamination does occur, the air filter will have to be

replaced.

WEAR LIMIT

(NOTCH STARTS)

DANGEROUS CONDITION !

DO NOT USE ON MOWER !

REPLACE WITH NEW

BLADE.

2. Tilt mower up on its rear wheels. Do not tilt

mower with spark plug or carburetor down.

3. Remove blade. See Figure 4.3.

MAKE SURE THAT

BLADE HUB IS

SEATED

BLADE

HUB

BETWEEN

FLANGES

FIGURE 4.1

FLANGE

4.1.1A. NINJA BLADE WEAR LIMIT

1A. Inspect blade frequently for signs of excessive

wear or damage. See Figure 4.2.

BLADE

WEAR LIMIT.

NEW BLADE

CRACKS OR

NOTCHES

CONE WASHER

(Concave Side Up)

BEGIN TO

APPEAR ON TIP

CAPSCREW

FIGURE 4.3

DANGEROUS !

DO NOT USE A BLADE IN

THIS CONDITION !

FIGURE 4.2

Section 4 - REPAIR & ADJUSTMENTS

CLUTCH CABLE

VINYL SPRING

WARNING

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for all

components to cool.

1/16” TO 1/8”

CLEARANCE

CLUTCH CABLE

EYE

UPPER

SPRING

SPRING HOOK

LOWER

SPRING

4. Sharpen blade on a grinding wheel at an angle of

22 to 28 degrees. DO NOT sharpen blade beyond

original cutting edge. See Figure 4.3.

DO NOT SHARPEN

BEYOND ORIGINAL

CUTTING EDGE

CABLE

CLUTCH CABLE EYE

22-28º

SPRING

BLADE TIP

END VIEW OF

BLADE ASSEMBLY

ORIGINAL CUTTING EDGE

FIGURE 4.4

2. To adjust, unhook upper spring from cable eye

and rotate spring in direction required to extend or

shorten spring length.

3. Rehook upper spring to cable eye and check

clearance. Repeat procedure if required.

5. Check blade for balance. If necessary, correct

balance by grinding heavy end of blade.

6. Reinstall blade. See Figure 4.1. Check torque of

blade retaining cap screw. Recommended torque

should be 30 to 40 ft. lbs.

NOTE: The vinyl spring cover should be kept over the

spring at all times except for adjustments.

NOTE: The following sections 4.2 through

4.4 are for self-propelled models only.

4. If the wheel drive control fails to return quickly to

the “OFF” position when released, check for binding

at the cable holdings located on the side of the right

handle. The upper clip should be located 2” below

the upper knob; the lower clip should be 4” above

the lower knob. The cable should slide freely with

the clips installed at these locations.

4.2 WHEEL DRIVE CONTROL ADJUSTMENT

1. The wheel drive control is properly adjusted when

there is 1/16” to 1/8” clearance between the inside of

the spring hook and the inside of the clutch cable

eye with the wheel drive control released. See

Figure 4.4.

Section 4 - REPAIR & ADJUSTMENTS

USE

NEEDLE

NOSE

PLIERS TO

INSTALL

DRIVE

WARNING

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for all

components to cool.

SPRING

4.3 DRIVEN DISC SERVICE

If the mower does not propel itself properly, See

Figure 4.6. Check for the following problems:

DRIVE

SPRING

DRIVEN DISC &

RUBBER RING

POLY-V

BELT

DRIVE

SPRING

ENGINE

DRIVE

BELT

DRIVE

DISC

FIGURE 4.7

4.3.3. DRIVEN DISC ADJUSTMENT

If the drive disc and driven disc are clean and the

mower drive is still slipping, adjust the driven disc as

follows:

1. Place ground speed control in the number six

speed position. See Figure 4.8.

FIGURE 4.6

MOVE GROUND

SPEED CONTROL TO

SIX SPEED POSITION

1. Grease on drive disc causing slippage.

2. Broken or disconnected drive spring.

3. Driven disc is out of adjustment.

4. Driven disc rubber ring is worn - does not contact

drive disc properly.

REYCLING MODEL SHOWN

(ROPE START MOUNTED ON

RIGHT SIDE OF HANDLE)

SIXTH SPEED

POSITION

5. Worn Poly-V Belt or engine drive belt.

SIXTH

NOTE: If any of the above (1 thru 5) are causing

problems, service as follows:

4.3.1. Cleaning Drive Disc & Driven Disc.

If oil or grease on the drive disc or driven disc is

causing slippage, clean discs as follows:

FIRST SPEED

POSITION

FIRST

1. Wipe away any oil or grease with a clean cloth.

2. Use either an approved grease solvent or hot,

soapy water to clean drive disc or driven disc.

3. Rinse components with clean water.

4. Dry components with a clean cloth.

FIGURE 4.8

4.3.2. Drive Spring Repair/Replacement

If drive spring is loose, reconnect as shown in Figure

4.7. If spring is broken, replace with new spring.

IMPORTANT: If machine drive system continues

slipping see Trouble Shooting section.

Section 4 - REPAIR & ADJUSTMENTS

WARNING

1/8” MEASUREMENT TO

OUTSIDE EDGE OF DRIVE

DISC

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

DRIVE

DISC

SLIDE DRIVEN

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for

all components to cool.

DISC ASSEMBLY

TOWARD OUTSIDE

EDGE

TRANSFER

ROD

4.3.3. DRIVEN DISC ADJUSTMENT

(Continued From Previous Page)

2. Remove driven disc spring from driven disc

assembly. Loosen connector hex nut. See Figure 4.9.

CONNECTOR

HEX NUT

OUTSIDE

EDGE

DRIVEN DISC

ASSEMBLY

CONNECTOR

DRIVE

DISC

FIGURE 4.10

DRIVEN DISC

SPRING

4.3.4. Replacing Rubber Driven Disc Ring

If the rubber ring is badly chunked or worn down to

within 1/16” of the metal rim of the driven disc hub, it

must be replaced. Install new rubber ring as follows:

1. Using a small flat blade screwdriver, free the clip

from the transfer rod. Then remove the transfer rod

from the clip and the speed control rod. See Figure

4.11.

TRANSFER

ROD

CONNECTOR

HEX NUT

CONNECTOR

CLIP

FIGURE 4.9

3. Slide driven disc assembly over to 1/8” from outside

edge of drive disc. Maintaining the 1/8” measurement,

remove any looseness from the linkage. This can be

done by holding the transfer rod and applying pressure

to the left (as viewed from operators position). Then

retighten the connector hex nut securely. See Figure

4.10. Move ground speed control to the first speed

position, then back to the sixth speed position.

Recheck the 1/8” measurement described previously.

Reinstall driven disc spring to driven disc assembly.

TRANSFER

ROD

SPEED CONTROL

ROD

FIGURE 4.11

Section 4 - REPAIR & ADJUSTMENTS

4.3.5. Replacing Bearing In Driven Disc Assembly

WARNING

If the driven disc bearing fails, remove the driven

disc assembly and replace bearing as follows:

1. Using a small flat blade screwdriver, free the clip

from the transfer rod. Then remove the transfer rod

from the clip and the speed control rod. See Figure

4.11.

2. Using needle nose pliers, unhook the drive spring

and slide the driven disc assembly off the hex shaft.

See Figure 4.12.

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for

all components to cool.

4.3.4. Replacing Rubber Driven Disc Ring

(Continued From Previous Page)

2. Using needle nose pliers, unhook the drive spring

and slide the driven disc assembly off the hex shaft.

See Figure 4.12.

3. Remove the five machine screws and plate which

secure the rubber ring to the driven disc hub. See

Figure 4.13.

3. Remove snap ring that secures driven disc hub

to thrust plate. See Figure 4.14.

THRUST

SHIM

PLATE

WASHER

SNAP

RING

4. Install new rubber ring.

5. Reverse above procedures for reassembly and

installation.

BEARING

REMOVE FOUR

MACHINE SCREWS

DRIVEN

DISC HUB

RUBBER

DISC

DRIVEN DISC

PLATE

DRIVE DISC

ASSEMBLY

FIGURE 4.14

4. Slide the hub assembly out of the bearing.

5. Remove the four screws.

6. Remove bearing and replace with new bearing.

7. Reassemble components in reverse order.

FIGURE 4.12

DRIVEN DISC HUB

MACHINE

SCREWS

RUBBER

RING

PLATE

FIGURE 4.13

Section 4 - REPAIR & ADJUSTMENTS

4.4.1. Engine Drive Belt Replacement

1. Empty the fuel tank.

2. Unhook the idler spring from the right rear wheel

bracket. See Figures 4.16.

WARNING

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for

all components to cool.

RIGHT REAR

WHEEL BRACKET

IDLER

SPRING

IDLER

ARM

SLOT IN

DECK

4.3.6. Replacement Of Bearing On Pulley End Of

Hex Shaft

To replace the bearing on the pulley end of the hex

shaft, proceed as follows:

1. Hold the hex shaft with an adjustable wrench

held next to the pulley.

2. Remove the 3/8” hex lock nut which is located

on the outside of the right wheel bracket. See

Figure 4.15.

DRIVE DISC

DRIVE BELT

3. Remove holder, O-ring and bearing.

4. Install new bearing.

ENGINE DRIVE PULLEY

5. Carefully install new O-ring over the outside of the

new bearing.

TOP VIEW OF ENGINE BELT ROUTING

6. Install bearing holder and secure with screws.

7. Install 3/8” hex lock nut.

FIGURE 4.16

IMPORTANT: DO NOT tip machine with carburetor or

spark plug down. Oil from crankcase will saturate the air

filter and cause the engine to be hard to start or not start

at all. If contamination does occur, the air filter will have to

be replaced.

3. Remove the driven disc. Refer to Section

“Replacing Driven Disc Rubber Ring” for driven disc

removal procedure.

4. Do not tilt mower with spark plug or carburetor

down. Tilt mower up on its rear wheels and remove

blade and blade hub. Assistance from another

person may be necessary to hold mower in the

tilted position.

BALL BEARING

“O” RING

3/8”

LOCK NUT

(Continued On Next Page)

BALL BEARING

HOLDER

FIGURE 4.15

4.4. BELT SERVICE

On self-propelled mowers, the engine belt transmits

power from engine to drive disc. The drive disc powers

the poly-v belt which engages the transmission that

powers the rear wheels. Should these belts become

worn, they could cause slippage which would impair

mower performance. The condition of the engine belt

and poly-v belt should be checked after every 25 hours

of mower operation.

Section 4 - REPAIR & ADJUSTMENTS

WARNING

DO NOT attempt any maintenance, adjustments or

service with engine and blade running. STOP engine

and blade. Disconnect spark plug wire and secure

away from spark plug. Engine and components are

HOT. Avoid serious burns, allow sufficient time for all

IDLER

SPRING

components to cool.

RIGHT WHEEL

BRACKET

4.4.1. Engine Drive Belt Replacement

(Continued from Previous Page)

5. Hold the slotted end of the drive disc bolt with a

screwdriver and remove the nut and internal tooth

lock washer. See Figure 4.17.

PULL SPRING THROUGH

LARGE HOLE & HOOK

INTO SMALL HOLE

DRIVE

DISC

SLOT IN END

POSITION SCRAPER

OF DRIVE

FIGURE 4.18

TO CLEAR “V” OF

DISC BOLT

PULLEY

4.4.2. Transmission Poly-V Belt Replacement

1. Remove the driven disc. Refer to Section on

“Replacing Driven Disc Rubber Ring” for procedure.

2. Note the routing of the old belt around the three

pulleys before removing it. See Figure 4.19.

3. Place new Poly-V Belt over end of hex shaft and

onto driven pulley.

BUSHING

IDLER

ARM

4. Work belt onto top of idler pulley.

SPACER

5. Twist belt sideways and pull it upward between

the differential bracket and drive pulley and then

down into the pulley groove. Make sure the Poly-V

Belt is above belt guide. See Figure 4.19.

IDLER

SPRING

INTERNAL TOOTH

LOCKWASHER

DECK BRACKET

(PARTIALLY

SHOWN)

NUT

IDLER

DIFFERENTIAL

PULLEY

BRACKET

FIGURE 4.17

DRIVE

PULLEY

POLY-V

BELT

6. Lift the drive disc off the idler arm and remove

worn belt.

7. Loop one end of new belt over engine pulley and

insert the other end through slot in deck. See Figure

4.17.

HEX SHAFT

8. Loop the belt around the pulley on the bottom of

the drive disc.

9. Reinstall drive disc and retaining hardware.

10.Reinstall blade hub and cutter blade. Recom-mended

torque for blade cap screw is 30 to 40 ft. lbs.

11. Use a stiff wire, such as a coat hanger, with a

hook fashioned on one end to pull the hooked end of

the idler spring through the large hole in the right

wheel bracket. See Figure 4.18.

DRIVEN

PULLEY

BELT GUIDE

12. Reinstall the driven disc assembly.

ROUTING OF POLY-V BELT

FIGURE 4.19

TROUBLESHOOTING

PROBLEM

PROBABLE CAUSE

CORRECTIVE ACTION

1. Fill fuel tank with fresh fuel.

Engine Will Not Start 1. Fuel tank empty.

Using Recoil Starter 2. Engine needs choking or priming.

2. Choke/Prime. Check Engine Manual for

Instructions.

3. Spark plug wire disconnected.

3. Place spark plug wire onto spark plug.

Engine Stalls or Stops 1. Blade control is released or is not being held securely 1. Blade control should be held securely against

After Running

against handle.

handle at all times during operation of mower.

2. Choke control in the “CHOKE” position.

2. Move choke control to “OFF” position.

3. Fuel tank empty.

3. Fill with fuel to proper level.

4. Clean free of all debris.

5. Service spark plug.

4. Engine air pre-cleaner and or air cleaner dirty.

5. Spark plug defective or gap set improperly.

6. Water, debris or stale fuel in fuel system.

6. Drain and clean fuel system.

1. Clean or replace filters.

Engine Loses Power 1. Engine air pre-cleaner or air cleaner dirty

2. Spark plug faulty.

2. Service spark plug.

3. Water, debris or stale fuel in fuel system.

3. Drain and clean fuel system.

Excessive Vibration 1. Damaged, out of balance or bent mower blade.

2. Loose blade components.

1. Service mower blade.

2. Service and tighten loose parts.

3. Replace air lifts. Tighten to proper torque.

4. Replace belt.

3. Loose or missing air lift (if equipped).

4. Lumpy or frayed belt

5. Bent Idler pulley

5. Replace pulley.

1. Damaged transmission

2. Traction drive belt requires replacement

3. Driven disc slipping

Mower Will Not Move

Loss Of Traction

(Self-Propelled Models)

1. Contact authorized SNAPPER dealer.

2. Replace traction drive belt.

3. Clean or replace driven disc.

1. Cutting height too low or high.

2. Engine speed too slow.

1. Adjust cutting height.

Cutting Grass

Improperly

2. Move engine speed control to “FAST” position.

3. Move ground speed control to a slower speed.

4. Adjust height of cut with height adjust levers.

5. Adjust height of cut with height adjust levers.

6. Sharpen cutting edges or replace blade.

1. Move engine speed control to “FAST” position.

2. Move ground speed control to a slower speed.

3. Mow when grass is dry.

3. Forward ground speed too fast.

4. Terraced cut, side to side.

5. Excessive deck pitch, front to rear.

6. Cutting blade dull or damaged.

1. Engine speed too slow.

Poor Grass Discharge

2. Forward speed too fast.

3. Grass is wet.

4. Excessively worn or damaged blade.

5. Build up of grass clippings and debris under deck.

6. Improper blade installed on deck.

7. Blade installed improperly on deck.

1. Leaking engine case.

4. Service mower blade.

5. Clean deck.

6. Install proper SNAPPER blade.

7. Install blade properly.

Oil Leaking

1. Contact authorized SNAPPER dealer.

2. Check and tighten drain plug.

3. Make sure dip stick or oil filler cap is securely

in place.

SERVICE SCHEDULE

ITEM

SERVICE PERFORMED

REF.

Page 6

EACH

USE

HRS

100

HRS

EACH

SEASON

Check Oil Level

Engine Oil

Initial Oil Change

Periodic Oil Change

Page 9

Page 10

Clean Sponge Element

Clean or Replace

Replace

Engine Manual

& Page 10.

Engine Manual.

Air Pre-Cleaner

Air Cleaner

X**

Engine Manual.

Engine Manual

Spark Plug

Clean Shroud & Fins

Engine Cooling

System

X**

Check For Wear And

Tension

Check For Wear, Damage Page 12

& Replacement

Clean Debris

Accumulation

Page 16-17

Drive Belts

Mower Blade

Mower Deck

Page 10

Check Grease Level

Pages 9

Transmission

Grease

Periodic Grease Check

Pages 10

Check for Wear Damage Page 12-15

& Replacement

Drive Disc

*Change oil every 25 hours when operating under heavy load or high temperatures.

**Clean more often under dusty conditions or when air debris is present

4.5.

MAINTENANCE/REPLACEMENT PARTS

MAINTENANCE PARTS

Engine Speed Control (Briggs Engines)

Engine Speed Control (Tecumseh 4 Cycle Engine)

Engine Speed Control (Tecumseh 2 Cycle Engine)

Blade Control Cable (See Parts Manual)

Clutch Pull Cable (See Parts Manual)

Cutter Blade (European Models Only)

Cutter Blade (Mulching)

2-9036

2-9052

2-4139

1-9795

1-7168

2-6691

2-6407

1-2354

1-2353

2-3364

06059

Cutter Blade (Not Air Lift Compatible)

Cutter Blade (Ninja - Quad Edge)

Wheel Drive Pulley to Transmission Pulley Belt

Engine to Drive Disc Belt

Rubber Drive Tire

Parts Manual for 21” Steel Deck Walk Behind Mower

Series 12, 14, 15 & 16

3 YEAR LIMITED WARRANTY

For three (3) years from purchase date for the original purchaser's residential, non-commercial use, SNAPPER, through

any authorized SNAPPER dealer will replace, free of charge (except for taxes where applicable), any part or parts found

upon examination by the factory at McDonough, Georgia, to be defective in material or workmanship or both.

For ninety (90) days from purchase date for the original purchaser's commercial, rental, or other non-residential use,

SNAPPER, through any authorized SNAPPER dealer will replace, free of charge, any part or parts found upon

examination by the factory at McDonough, Georgia, to be defective in material or workmanship or both.

All transportation costs incurred by the purchaser in submitting material to an authorized SNAPPER dealer for

replacement under this warranty must be paid by the purchaser.

This warranty does not apply to engines and their components, and batteries, as these items are warranted separately.

This warranty does not apply to parts that have been damaged by accident, alteration, abuse, improper lubrication,

normal wear, or other cause beyond the control of SNAPPER. This warranty does not cover any machine or component

part that has been altered or modified changing safety, performance, or durability.

Batteries have a one (1) year prorated warranty period with free replacement if required during the first ninety (90) days

from the original purchase date. SNAPPER will not be responsible for any installation cost incurred. The battery warranty

only covers original equipment batteries and does not cover damage to the battery or machine caused by neglect or

abuse, destruction by fire, explosion, freezing, overcharging, improper maintenance, or use of improper electrolyte.

There is no other express warranty.

DISCLAIMER OF WARRANTY

Implied warranties, including those of merchantability and fitness for a particular purpose, are limited to three

(3) years from purchase date for the original purchaser's residential or other non-commercial use, and ninety

(90) days from purchase for the original purchaser's commercial, rental or other non-residential use, and to the

extent permitted by law, any and all implied warranties are excluded. This is the exclusive remedy. Liabilities for

consequential damages, under any and all warranties are excluded.

Some states do not allow limitations on how long an implied warranty lasts, or do not allow the exclusion or

limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

WARNING: THE USE OF REPLACEMENT PARTS OTHER THAN GENUINE SNAPPER PARTS MAY IMPAIR THE

SAFETY OF SNAPPER PRODUCTS AND WILL VOID ANY LIABILITY AND WARRANTY BY SNAPPER

ASSOCIATED WITH THE USE OF SUCH PARTS.

IMPORTANT: Please fill out the attached SNAPPER Product Registration Card immediately and mail to:

Snapper’s Product Registration Center, P.O. Box 1379, McDonough, Georgia 30253

PRIMARY MAINTENANCE

NOTES

___________________________________________________________________

NOTES

___________________________________________________________________

NOTES

___________________________________________________________________

Safety Instructions & Operator’s Manual for

21” STEEL DECK

WALK BEHIND MOWERS

SERIES 16

IMPORTANT

Snapper products are built using engines that meet or exceed all applicable emissions requirements on

the date manufactured. The labels on those engines contain very important emissions information and

critical safety warnings. Read, Understand, and Follow all warnings and instructions in this manual, the

engine manual, and on the machine, engine and attachments. If you have any questions about your

Snapper product, contact your local authorized Snapper dealer or contact Snapper Customer Service at

Snapper, McDonough, GA. 30253. Phone: (1-800-935-2967).

The engine exhaust from this product contains chemicals known to the State

WARNING:

of California to cause cancer, birth defects or other reproductive harm.

SNAPPER INC.

MANUAL No. 7-3136 (I.R. 9/2/99)

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