lock YAMAHA GRIZZLY 125 2012 User Guide

7-6
7 opening, even when the throttle lever is pushed to
the maximum. Turning in the adjusting screw limits
the maximum engine power available and de-
creases the maximum speed of the ATV. Turning
in the adjusting screw decreases top speed, and
turning it out increases top speed. (See page 4-4.)
Loading and accessories
Take extra precautions when driving with a load or
trailer. Follow these instructions and always use
common sense and good judgment when carrying
cargo or towing a trailer.
WARNING
EWB01462Improper loading or towing can increase the
risk of loss of control, an overturn, or other ac-
cident. To reduce the risk of an accident:
Do not exceed the maximum loading limits
for the vehicle (see “MAXIMUM LOADING
LIMIT” in this section or vehicle labeling).
Keep weight on racks centered side to side,
and as low as possible. Be sure cargo is se-
cured – a loose load could change handling
unexpectedly.
Make sure the load does not interfere with
your control or ability to see where you are
going.
Tie down cargo in the trailer securely. Make
sure cargo in the trailer cannot move around.
A shifting load can cause an accident.
Reduce speed and allow more room to stop.
A heavier vehicle takes longer to stop.
Avoid hills and rough terrain. Choose terrain
carefully. Use extreme caution when towing
or carrying a load on inclines.
Turn gradually and go slowly.
1. Adjusting screw
2. Locknut
2
1
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7-15
7Do not attempt to climb hills until you have mas-
tered basic maneuvers on flat ground. Always
check the terrain carefully before attempting any
hill. In all cases avoid inclines with slippery or loose
surfaces, or obstacles that might cause you to lose
control.
To climb a hill, you need traction, momentum, and
steady throttle. Travel fast enough to maintain mo-
mentum, but not so fast that you cannot react to
changes in the terrain as you climb.
It is important when climbing a hill to make sure
that your weight is transferred forward on the ATV.
This can be accomplished by leaning forward and,on steeper inclines, standing on the footboards
and leaning forward over the handlebars. Whenev-
er possible, ride straight up hills.
Slow down when you reach the crest of the hill if
you cannot see clearly what is on the other side –
there could be another person, an obstacle, or a
sharp drop-off. Use common sense and remember
that some hills are too steep for you to climb or de-
scend.
If you are climbing a hill and you find that you have
not properly judged your ability to make it to the
top, you should turn the ATV around while you still
have forward motion (provided you have the room
to do so) and go down the hill.
If your ATV has stalled or stopped and you believe
you can continue up the hill, restart carefully to
make sure you do not lift the front wheels which
could cause you to lose control. If you are unable
to continue up the hill, dismount the ATV on the up-
hill side. Physically turn the ATV around and then
descend the hill.
If you start to roll backwards, DO NOT apply the
rear brake, and apply the front brake gradually.
The ATV could easily tip over backwards. When
fully stopped, apply the rear brake as well, and
then lock the parking brake. Dismount the ATV im-
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8
TIPIf the specified idling speed cannot be obtained as
described above, have a Yamaha dealer make the
adjustment.EBU24047Adjusting the throttle lever free play The throttle lever free play should be checked and,
if necessary, adjusted at the intervals specified in
the periodic maintenance and lubrication chart.The throttle lever free play should measure 1.0–
3.0 mm (0.04–0.12 in) as shown. Periodically
check the throttle lever free play and, if necessary,
adjust it as follows.
TIPThe engine idling speed must be checked, and ad-
justed if necessary, before adjusting the throttle le-
ver free play.1. Slide the rubber cover back.
2. Loosen the locknut.
3. To increase the throttle lever free play, turn
the throttle lever free play adjusting bolt in di-
rection (a). To decrease the throttle lever free
play, turn the adjusting bolt in direction (b).
1. Throttle stop screwEngine idling speed:
1650–1750 r/min
(a)(b) 1
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8
4. Tighten the locknut.
5. Slide the rubber cover to its original position.
EBU24060Valve clearance The valve clearance changes with use, resulting in
improper air-fuel mixture and/or engine noise. To
prevent this from occurring, the valve clearance
must be adjusted by a Yamaha dealer at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
EBU29601Brakes Replacement of brake components requires pro-
fessional knowledge. Brake service should be per-
formed by a Yamaha dealer.
WARNING
EWB02571Operating with improperly serviced or adjust-
ed brakes could lead to a loss in braking ability
and an accident.EBU24090Checking the front and rear brake
shoes The front and rear brake shoes must be checked
for wear at the intervals specified in the periodic
maintenance and lubrication chart. Each brake is
provided with a wear indicator, which allows you to
check the brake shoe wear without having to dis-
assemble the brake. To check the brake shoe
wear, check the position of the wear indicator while
applying the brake. If a brake shoe has worn to the
point that the wear indicator reaches the wear limit
line or mark, have a Yamaha dealer replace the
brake shoes as a set.
1. Rubber cover
2. Throttle lever free play adjusting bolt
3. Locknut
4. Throttle lever free play
4 3
2
1
(a) (b)
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8-30
8 3. Disconnect the coupler shown.4. Remove the V-belt air filter element cover by
removing the screw.
5. Loosen the locknut and fully turn in the brake
lever free play adjusting bolt at the brake le-
ver.
1. Panel
2. Quick fastener
1. Coupler
122
1
1
1. V-belt air filter element cover
2. Screw
12
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8-31
86. Make sure the brake cable joint in the equaliz-
er is straight when the brake is applied. If the
cable joint isn’t straight, loosen the locknuts,
and then turn the adjusting nuts on the front
brake cables until the cable joint becomes
straight.
1. Locknut
2. Brake lever free play adjusting bolt
1
2
1. Brake equalizer
2. Cable joint
1. Locknut
2. Adjusting nut
aa'
a=a'
1 2
2
1 1
2
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8-32
8 7. Tighten the locknut on each brake cable.
8. Turn the brake lever free play adjusting bolt in
direction (a) to increase the free play, and in
direction (b) to decrease it.
9. Tighten the locknut at the brake lever.
10. Install the V-belt air filter element cover by in-
stalling the screw.
11. Connect the coupler, and then install the pan-
el by installing the quick fasteners.
12. Install the front carrier by installing the bolts,
and then tighten them to the specified torque.
EBU30440Adjusting the rear brake lever free play The brake lever free play must be checked and, if
necessary, adjusted at the intervals specified in the
periodic maintenance and lubrication chart.TIPBefore adjusting the brake lever free play, check
the rear brake shoes for wear.The brake lever free play should measure 5.0–8.0
mm (0.20–0.31 in) as shown. If the free play is in-
correct, adjust it as follows.
1. Locknut
2. Brake lever free play adjusting bolt
3. Brake lever free play
3
1
2
(b)
(a)
Tightening torque:
Front carrier bolt:
7 Nm (0.7 m·kgf, 5.1 ft·lbf)
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81. Loosen the locknut.
2. Turn the brake lever free play adjusting bolt in
direction (a) to increase the free play, and in
direction (b) to decrease it.3. If the correct free play cannot be obtained as
described above, turn the adjusting bolt fully in
direction (a), and then adjust the free play us-
ing the brake lever free play adjusting nut on
the rear wheel hub.
4. Turn the brake lever free play adjusting nut on
the rear wheel hub in direction (a) to increase
the free play, and in direction (b) to decrease
it.
1. Brake lever free play
1
1. Locknut
2. Brake lever free play adjusting bolt
(a)
(b)2 1
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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
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8To adjust the drive chain slack
1. Place the ATV on a level surface.
2. Loosen the hub stopper bolt locknut and then
the hub stopper bolt.
3. Loosen the axle holding bolts.
4. Loosen the drive chain slack adjusting bolt
locknut. To tighten the drive chain, turn the ad-
justing bolt in direction (a). To loosen the drive
chain, turn the adjusting bolt in direction (b),
and then push the wheels forward. NOTICE:
Improper drive chain slack will overloadthe engine as well as other vital parts of
the ATV and can lead to drive chain slip-
page or breakage. To prevent this from oc-
curring, keep the drive chain slack within
the specified limits.
[ECB00542]
5. Tighten the drive chain slack adjusting bolt
locknut and the axle holding bolts to the spec-
ified torques.
1. Hub stopper bolt
2. Hub stopper bolt locknut
3. Axle holding bolt (lower)
4. Axle holding bolt (upper)1
2
34
1. Locknut
2. Drive chain slack adjusting bolt
1
2
(a)
(b)
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