Safety Instructions & Operator’s Manual for
20” STEEL DECK
WALK MOWERS
SERIES 12
MODELS
R205012
NR205012
MODEL NUMBER EXPLANATION
PREFIX BODY SUFFIX
N R 20 50 12
ENGINE SERIES
HP DESIGNATION
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 Page 2. 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.
COPYRIGHT © 1996
SNAPPER INC.
ALL RIGHTS RESERVED
SERIES CUTTING
DESIGNATION WIDTH
PREFIX EXPLANATION
R - Recycling Mower
N - California Model
BODY EXPLANATION
20 - 20” Cutting Width 50 - 5.0 HP Engine
SUFFIX EXPLANATION
12 - Series Designation
MANUAL No. 3-5806 (I.R. 8/96)
IMPORTANT SAFETY INSTRUCTIONS
WARNING: This powerful machine is capable of amputating hands and feet and can throw objects that can cause injury
and damage! Failure to comply with the following instructions may result in serious injury to the operator or other
persons. The owner of the mower must understand these instructions and, furthermore, must allow only persons who
understand these instructions to operate mower. Each person operating the mower must be of sound mind and body
and must not be under the influence of any substance which might impair vision, dexterity, or judgment. If you have any
questions pertaining to your mower which your dealer cannot answer to your satisfaction, call or write the Customer
Service Department at SNAPPER, McDonough, Georgia, 30253. Phone: (770) 954-2500.
PROTECTION FOR CHILDREN
1. DO NOT allow children in area wh en mow er is being
operated.
2. DO NOT allow pre-teenage children to operate
mower.
3. Allow only responsible teenagers or adults with
mature judgment to operate mower and only under
close supervision.
4. Keep the area clear of all persons, particularly small
children, and pets.
PREPARA TION
1. Never operate mower without proper guards, plates,
safety switches, or other saf ety protectiv e devices in
place and properly connected. Inspect to determine
that these safety devices are installed properly, are in
good repair, and operate properly. If the condition or
operation of these devices are questionable, they
must be repaired or replaced before using the
mower. Be thoroughly familiar with the controls and
proper use of the equipment.
2. Thoroughly inspect the area where the mower is to
be used and remove all stones, sticks, wire, bones
and other foreign objects. Also note the location of
holes, stumps, and other possible hazar ds.
3. DO NOT operate mower when barefoot or wearing
open sandals. Always wear substantial footwear and
long pants.
4. Fill fuel tank before starting engine. Use approved
fuel container. DO NOT smoke near open fuel
container. DO NOT fill fuel tank indoors or when
engine is running. Allow engine to cool for at least
ten minutes before refilling. Wipe off any spilled fuel
before starting engine. DO NOT run engine indoors.
5. Make sure that the wheel drive clutch control is
disengaged before starting engine.
6. Nev er attempt to make a cutting height adjustmen t
while the engine is running.
7. When mowing over rough ground or in tall grass,
mower must be set at highest cutting position.
8. Mow only in daylight or in good artificial light.
9. Never operate mower in wet grass. Always be sure of
your footing; keep a firm hold on the handle and
walk; never run!
10. DO NOT operate mower without the grass bag (and
adapter), side chute, mu lch cover or adapter plug in
place.
OPERATION
1. DO NOT change engine governor settings or over
speed engine.
2. DO NOT put hands or feet near or under rotating
parts. Keep clear of discharge area while engine is
running.
3. STOP engine w hen crossing grav el drives, w alks, or
roads, and under any conditions where thrown
objects might be a hazard.
4. After striking a foreign object or if mower vibrates
abnormally, STOP the engine, disconnect and secure
spark plug wire. Inspect the mo wer for any damage
and repair the damage.
5. STOP blade and engine whenever you leave the
operating position behind the handle for any reason,
including clearing grass, emptying grass bag and
making any adjustments, repairs, or inspections.
6. Before cleaning, repairing or inspecting, make
certain blade and all mo ving parts have STOPPED.
Disconnect and secure spark plug wire away from
plug to prevent accidental starting.
7. STOP engine and wait until the blade comes to
complete STOP before removing grass bag and/or
clearing grass.
8. Mow across slopes, never up-and-down. Exercise
CAUTION when changing directions on slopes. DO
NOT mow steep slopes or other areas where stability
or traction is in doubt.
MAINTENA NCE A ND STORA GE
1. Keep all nuts, bolts, and screws tight to be sure
mower is in safe operating condition.
2. Never store mower with fuel in tank inside of a
building where fumes may reach an open flame or
spark. Allow engine to cool before storing in any
enclosure.
3. To reduce fire hazard, keep mower free of grass,
leaves, spilled fuel or excessive grease.
4. Check grass bag assembly frequently for wear or
deterioration. Replace with n ew bag if loose seams
or tears are evident. Replace slider or bag adapt er if
broken or cracked.
5. Have your mow er inspected and serviced each year
by an authorized Snapper dealer. Determine if any
additional devices are available which might upgrade
the safety of your mower.
6. Factory specified Snapper replacement parts must
be used to assure adequate protection against injury.
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TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS................................................... 2
TABLE OF CONTENTS............................................................................ 3
FAMILIARIZATION.................................................................................... 4
OPERATING INSTRUCTIONS...............................................................5-6
Pre-start Checklist ............................................................................................... 5
Starting & Operation Engine & Blades ..............................................................5
Stopping Engine & Blades.................................................................................. 6
Adjusting Cutting Height.................................................................................... .6
Adjusting Front & Rear Axles ............................................................................. 6
Recycling Operation............................................................................................ 6
MAINTENANCE INSTRUCTIONS............................................................. 7
Changing Engine Oil............................................................................................ 7
Annually (End of Each Season).......................................................................... 7
Engine................................................................................................................ 7
Air Filter............................................................................................................. 7
Engine Oil.......................................................................................................... 7
Fuel Filter........................................................................................................... 7
Storage Procedure............................................................................................... 7
ADJUSTMENTS AND REPAIR................................................................. 8
Mower Blade Repair/Replacement..................................................................... 8
TROUBLESHOOTING .............................................................................. 9
SERVICE SCHEDULE ............................................................................10
WARRANTY............................................................................................ 11
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Section 1 - FAMILIARIZATION
BLADE
ENGINE
THROTTLE
CONTROL
FOLDING
FUEL TANK
MOWER DECK
RECYCLING COVER
INTRODUCTION
This manual has been prepar ed for the operators of
the SNAPPER Series 12, 20” 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 INST RUCTIONS” on Page 2
of this manual and all safety messages on the
mower, engine and attachments bef ore operating the
machine.
UPPER
HANDLE
ROPE START
HANDLE
MID-HANDLE
BLADE CONTROL
CABLE CLAMP
LOWER
HANDLE
(Bracket)
ENGINE
MUFFLER
MOWER
DECK
DECK HEIGHT
ADJUSTMENT
ENGINE PRIMER
BUTTON (SEE
ENGINE MANUAL)
NOMENCLATURE
The nomenclature drawing above, shows the
essential parts of the SNAPPER Series 12, 20”
WALK BEHIND MOW ERS. It is recommended that
all operators of the mower become thoroughly
familiar with the contr ols, 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.
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