2015 YAMAHA GRIZZLY 550 Owners Manual

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8
TIPIf water drains from the V-belt case after removing
the plug, have a Yamaha dealer check the ATV as
the water may affect other engine parts. EBU29703Adjusting the throttle lever free playThe 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 3.0–5.0
mm (0.12–0.20 in) as shown. Periodically check
the throttle lever free play and, if necessary, adjust
it as follows.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).
4. Tighten the locknut.
5. Slide the rubber cover to its original position.1. V-belt case drain plug
1. Rubber cover
2. Throttle lever free play adjusting bolt
3. Locknut
4. Throttle lever free play
2WD
4WD
3
2
1
4
(b)
(a)
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EBU24061Valve clearanceThe 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.EBU24072Adjusting the drive select lever safety
system cableThe drive select lever safety system cable stretch-
es with use, which can result in improper function.
Therefore, the safety system cable should be
checked and adjusted by a Yamaha dealer at the
intervals specified in the periodic maintenance
and lubrication chart.EBU29602BrakesReplacement of brake components requires pro-
fessional knowledge. Brake service should be
performed by a Yamaha dealer.
WARNING
EWB02572Operating with improperly serviced or adjust-
ed brakes could lead to a loss in braking ability
and an accident. EBU27471Checking the front and rear brake padsThe front and rear brake pads must be checked
for wear at the intervals specified in the periodic
maintenance and lubrication chart. Each brake
pad is provided with a wear indicator groove,
which allows you to check the brake pad wear
without having to disassemble the brake. If a
brake pad has worn to the point that the wear in-
dicator groove has almost disappeared, have a
Yamaha dealer replace the brake pads as a set.TIPThe wheels need to be removed to check the
brake pads. (See page 8-64.)
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Front brake
Rear brake
EBU29843Checking the brake fluid levelBefore riding, check that the brake fluid is above
the minimum level mark. Check the brake fluid lev-
el with the top of the reservoir level. Replenish the
brake fluid if necessary.
Front brake
1. Wear indicator groove
1. Wear indicator groove
1. Minimum level mark
2WD
4WD
1
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8Rear brake
WARNING
EWB02721Improper maintenance can result in loss of
braking ability. Observe these precautions:

Insufficient brake fluid may allow air to enter
the brake system, reducing braking perfor-
mance.
 Clean the filler cap before removing. Use
only DOT 4 brake fluid from a sealed contain-
er. 
Use only the specified brake fluid; otherwise,
the rubber seals may deteriorate, causing
leakage.
 Refill with the same type of brake fluid. Add-
ing a brake fluid other than DOT 4 may result
in a harmful chemical reaction.
 Be careful that water does not enter the
brake fluid reservoir when refilling. Water will
significantly lower the boiling point of the flu-
id and may result in vapor lock.
NOTICEECB01161Brake fluid may damage painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately. As the brake pads wear, it is normal for the brake
fluid level to gradually go down. A low brake fluid
level may indicate worn brake pads and/or brake
system leakage; therefore, be sure to check the
brake pads for wear and the brake system for
leakage. If the brake fluid level goes down sud-
denly, have a Yamaha dealer check the cause be-
fore further riding.
1. Minimum level markSpecified brake fluid:
DOT 4
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EBU24293Changing the brake fluidHave a Yamaha dealer change the brake fluid at
the intervals specified in the periodic maintenance
and lubrication chart. In addition, have the oil seals
of the master cylinders and calipers as well as the
brake hoses replaced at the intervals listed below
or whenever they are damaged or leaking.
Oil seals: Replace every two years.
 Brake hoses: Replace every four years.EBU27773Checking the front and rear brake lever
free playThe front and rear brake lever free play must be
checked at the intervals specified in the periodic
maintenance and lubrication chart. The brake le-
vers should have no free play as shown. If there is
free play, have a Yamaha dealer check the brake
system. Front brake
Rear brake
1. No brake lever free play
1. No brake lever free play
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EBU29074Adjusting the brake pedal free playThe brake pedal free play must be adjusted at the
intervals specified in the periodic maintenance
and lubrication chart.TIPAlways perform this maintenance completely in
the following order whenever adjusting the rear
brake.
 Before adjusting the brake pedal free play,
check the rear brake pads for wear. The brake pedal free play should measure 1.0–6.0
mm (0.04–0.24 in) as shown. If the free play is in-
correct, adjust it as follows. 1. Remove panel G. (See page 8-10.)
2. Loosen the locknut.
3. Turn the brake pedal free play adjusting nut in
direction (a) to increase the free play, and in
direction (b) to decrease it.
1. Brake pedal free play
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4. Tighten the locknut.
5. After adjusting, there should be slight play at
the brake pedal cable joint as shown. If there
is no play, repeat steps 2 to 4. 6. Install the panel.
If the correct free play cannot be obtained, have a
Yamaha dealer adjust it.
TIPWhen adjusting the brake pedal free play:
 Be sure not to step on the brake pedal.
 Make sure the rear brake lever and brake pedal
do not move.
1. Brake pedal free play adjusting nut
2. Locknut
1. Brake pedal cable joint
2. Slight play (0.1–0.5 mm [0.004–0.02 in])
1
2
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EBU24231Axle bootsThe axle boots must be checked for damage at
the intervals specified in the periodic maintenance
and lubrication chart. Check the axle boots for
tears or damage. If any damage is found, have
them replaced by a Yamaha dealer.
EBU24905Checking and lubricating the cablesThe operation and the condition of all control ca-
bles should be checked before each ride, and the
cables and cable ends should be lubricated if nec-
essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.
1. Front axle boot (each side)
1
1
1. Rear axle boot (each side)Recommended lubricant:
Yamaha cable lubricant or other suitable cable lubricant
1
1
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