2012 YAMAHA GRIZZLY 125 brake

8-34
8 5. Use the adjusting bolt to obtain a precise ad-
justment if necessary, and then tighten the
locknut. If the correct free play cannot be ob-
tained, have a Yamaha dealer adjust it.
EBU24874Drive chain slack The drive chain slack should be checked before
each ride and adjusted if necessary.
To check the drive chain slack
1. Place the ATV on a level surface.
TIPWhen checking and adjusting the drive chain
slack, there should be no weight on the ATV and
all tires must be touching the ground.2. Move the ATV back and forth to locate the
tightest portion of the drive chain, and then
measure the drive chain slack as shown.
3. If the drive chain slack is incorrect, adjust it as
follows.
1. Brake lever free play adjusting nut
1
(a)
(b)
Drive chain slack:
30.0 mm (1.18 in)1. Drive chain slack
1
U1PY60E0.book Page 34 Friday, March 11, 2011 9:30 AM

8-38
8
EBU28702Checking and lubricating the front and
rear brake levers The operation of the front and rear brake levers
should be checked before each ride, and the lever
pivots should be lubricated if necessary.
Front brake leverRear brake lever
EBU24963Checking the wheel hub bearings The front and rear wheel hub bearings must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. If there is play
in a wheel hub or if a wheel does not turn smoothly,
have a Yamaha dealer check the wheel hub bear-
ings. Recommended lubricant:
Lithium-soap-based grease
U1PY60E0.book Page 38 Friday, March 11, 2011 9:30 AM

8-47
8
EBU25613Replacing the tail/brake light bulb If the tail/brake light bulb burns out, replace it as
follows.
1. Remove the tail/brake light bulb holder (to-
gether with the bulb) by turning it counter-
clockwise.
2. Remove the burnt-out bulb by pushing it in
and turning it counterclockwise.
3. Insert a new bulb into the bulb holder, push it
in, and then turn it clockwise until it stops.4. Install the bulb holder (together with the bulb)
by turning it clockwise.
EBU25651Removing a wheel 1. Place the ATV on a level surface.
2. Loosen the wheel nuts.
1. Tail/brake light bulb holder
1
1. Tail/brake light bulb
2. Tail/brake light bulb holder
12
U1PY60E0.book Page 47 Friday, March 11, 2011 9:30 AM

9-1
9
EBU25860
CLEANING AND STORAGE
EBU25902Cleaning Frequent, thorough cleaning of your ATV will not
only enhance its appearance but will improve its
general performance and extend the useful life of
many components.
1. Before cleaning the ATV:
a. Block off the end of the exhaust pipe to
prevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler caps
are properly installed.
2. If the engine case is excessively greasy, apply
degreaser with a paint brush. Do not apply de-
greaser to the chain, sprockets or wheel ax-
les.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the job.
WARNING! Wet brakes may have reduced
stopping ability, increasing the chance of
an accident. Test the brakes after washing.
Apply the brakes several times at slow
speeds to let friction dry out the linings.
[EWB02311]
NOTICE: Excessive water pressuremay cause water seepage and deteriora-
tion of wheel bearings, brakes, transmis-
sion seals and electrical devices. Many
expensive repair bills have resulted from
improper high-pressure detergent applica-
tions such as those available in coin-oper-
ated car washers.
[ECB00711]
4. Once most of the dirt has been hosed off,
wash all surfaces with warm water and mild,
detergent-type soap. An old toothbrush or bot-
tle brush is handy for hard-to-reach places.
5. Rinse the ATV off immediately with clean wa-
ter and dry all surfaces with a chamois, clean
towel or soft absorbing cloth.
6. Dry the chain and lubricate it to prevent it from
rusting.
7. Clean the seat with a vinyl upholstery cleaner
to keep the cover pliable and glossy.
8. Automotive type wax may be applied to all
painted and chrome plated surfaces. Avoid
combination cleaner-waxes. Many contain
abrasives which may mar the paint or protec-
tive finish. When finished cleaning, start the
engine and let it idle for several minutes.
U1PY60E0.book Page 1 Friday, March 11, 2011 9:30 AM

10-3
10
Reverse gear:
49/14 × 49/15 × 40/17 (26.902)Chassis:Frame type:
Steel tube frame
Caster angle:
6.0 °
Trail:
15.0 mm (0.59 in)Front tire:Type:
Tubeless
Size:
AT20 x 7-8
Manufacturer/model:
DUNLOP/KT536ARear tire:Type:
Tubeless
Size:
AT22 x 10-8
Manufacturer/model:
DUNLOP/KT537ALoading:Maximum loading limit:
105.0 kg (231 lb)
(Total weight of rider, cargo, accessories, and tongue)Tire air pressure (measured on cold tires):Recommended:
Front:
20.0 kPa (0.200 kgf/cm², 2.9 psi)Rear:
25.0 kPa (0.250 kgf/cm², 3.6 psi)
Minimum:
Front:
17.0 kPa (0.170 kgf/cm², 2.5 psi)
Rear:
22.0 kPa (0.220 kgf/cm², 3.2 psi)
Front wheel:Wheel type:
Panel wheel
Rim size:
8 x 5.5ATRear wheel:Wheel type:
Panel wheel
Rim size:
8 x 8.0ATFront brake:Type:
Drum brake
Operation:
Right hand operationRear brake:Type:
Drum brake
Operation:
Left hand operationFront suspension:Type:
Swing axle
U1PY60E0.book Page 3 Friday, March 11, 2011 9:30 AM

10-4
10
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
70 mm (2.8 in)Rear suspension:Type:
Swingarm
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
80 mm (3.1 in)Electrical system:Ignition system:
DC CDI
Charging system:
AC magnetoBattery:Model:
12N12C-4A-2
Voltage, capacity:
12 V, 12.0 AhHeadlight:Bulb type:
Krypton bulbBulb voltage, wattage × quantity:Headlight:
12 V, 30.0/30.0 W × 2
Tail/brake light:
12 V, 5.0/21.0 W × 1
Neutral indicator light:
12 V, 1.7 W × 1Reverse indicator light:
12 V, 1.7 W × 1
Fuses:Main fuse:
15.0 AEBU30400For EUR only
The figures quoted are emission levels and are not
necessarily safe working levels. Whilst there is a
correlation between the emission and exposure
levels, this cannot be used reliably to determine
whether or not further precautions are required.
Factors that influence the actual level of exposure
of work-force include the characteristics of the
work room, the other sources of noise, etc. i.e. the
number of machines and other adjacent process-
es, and the length of time for which an operator is
exposed to the noise. Also the permissible expo-
sure level can vary from country. This information,
however, will enable the user of the machine to
make a better evaluation of the hazard and risk.
U1PY60E0.book Page 4 Friday, March 11, 2011 9:30 AM

INDEX
AAccessories and loading ................................................ 6-6
Air filter elements, engine and V-belt filter cleaning ..... 8-17BBattery ................................................................... 5-6, 8-41
Brake lever free play, adjusting the front ..................... 8-28
Brake lever free play (rear), adjusting .......................... 8-32
Brake lever, front ............................................................ 4-4
Brake lever, rear ............................................................ 4-5
Brake levers, checking and lubricating ........................ 8-38
Brakes .......................................................................... 8-27
Brakes, front and rear .................................................... 5-3
Brake shoes, checking the front and rear .................... 8-27CCables, checking and lubricating ................................. 8-37
Carburetor, adjusting ................................................... 8-25
Carrier, front ................................................................. 4-11
Carrier, rear .................................................................. 4-11
Chassis fasteners .......................................................... 5-6
Cleaning ......................................................................... 9-1DDrive chain ..................................................................... 5-3
Drive chain, lubricating ................................................. 8-36
Drive chain slack .......................................................... 8-34
Drive select lever ........................................................... 4-6
Drive select lever and driving in reverse ........................ 6-3EEngine break-in .............................................................. 6-4Engine, cold start ........................................................... 6-1
Engine idling speed ..................................................... 8-25
Engine oil .............................................................. 5-3, 8-11
Engine, starting a warm ................................................. 6-2
Engine stop switch ......................................................... 4-2
FFront knuckle pivots, lubricating .................................. 8-40
Fuel ......................................................................... 4-7, 5-3
Fuel cock ....................................................................... 4-8
Fuel tank cap ................................................................. 4-7
Fuse, replacing ............................................................ 8-44HHandlebar switches ....................................................... 4-2
Headlight beam, adjusting ........................................... 8-46
Headlight bulb, replacing ............................................. 8-44
Horn switch .................................................................... 4-3IIdentification numbers .................................................. 11-1
Indicator lights ................................................................ 4-2
Instruments, lights and switches .................................... 5-6LLabel locations ............................................................... 1-1
Light switch .................................................................... 4-3MMain switch .................................................................... 4-1
Maintenance and lubrication chart ................................. 8-5
Maintenance chart, emission control system ................. 8-3
Model label .................................................................. 11-2
U1PY60E0.book Page 1 Friday, March 11, 2011 9:30 AM

NNeutral indicator light ..................................................... 4-2OOwner’s manual and tool kit ........................................... 8-2PParking ........................................................................... 6-5
Parking brake ................................................................. 4-5
Parking on a slope ......................................................... 6-5
Part locations ................................................................. 3-1RReverse indicator light .................................................... 4-2
Riding your ATV ............................................................. 7-1SSafety information .......................................................... 2-1
Seat .............................................................................. 4-10
Spark arrester, cleaning ............................................... 8-23
Spark plug, checking ...................................................... 8-9
Specifications ............................................................... 10-1
Speed limiter .................................................................. 4-4
Starter (choke) ............................................................. 4-10
Start switch ..................................................................... 4-3
Steering shaft, lubricating ............................................. 8-40
Storage ........................................................................... 9-2
Suspension, lubricating the lower arm pivots ............... 8-39TTail/brake light bulb, replacing ..................................... 8-47
Throttle lever ........................................................... 4-3, 5-3
Throttle lever free play, adjusting ................................. 8-26
Tires ............................................................................... 5-3
Transmission oil .................................................... 5-3, 8-14
Troubleshooting ........................................................... 8-49
Troubleshooting chart .................................................. 8-50
VValve clearance ............................................................ 8-27
V-belt case drain screw ................................................ 8-24
Vehicle identification number ....................................... 11-1WWheel hub bearings, checking ..................................... 8-38
Wheel, installing ........................................................... 8-48
Wheel, removing .......................................................... 8-47
U1PY60E0.book Page 2 Friday, March 11, 2011 9:30 AM