Page 177 of 212

9-50
9
WARNING
EWB04160Improper maintenance can result in loss of
braking ability or YCC-S clutch operation.
Observe these precautions:
Insufficient brake or YCC-S clutch fluid
may allow air to enter the brake or
YCC-S clutch system, reducing braking
or YCC-S clutch performance.
Clean the filler caps before removing.
Use only DOT 4 brake fluid from a sealed
container.
Use only the specified brake fluid; other-
wise, the rubber seals may deteriorate,
causing leakage.
Refill with the same type of brake fluid.
Adding a brake fluid other than DOT 4
may result in a harmful chemical reac-
tion.
Be careful that water or dust does not
enter the brake or YCC-S clutch fluid
reservoir when refilling. Water will signif-
icantly lower the boiling point of the fluid
and may result in vapor lock.
NOTICEECB01161Brake fluid may damage painted surfaces
or plastic parts. Always clean up spilled
fluid immediately. 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 or brake system leakage; therefore, be
sure to check the brake pads for wear and the
brake system for leakage. A low YCC-S
clutch fluid level may indicate YCC-S clutch
system leakage; therefore, be sure to check
the YCC-S clutch system for leakage. If the
brake or YCC-S clutch fluid level goes down
UBAS7AE0.book Page 50 Wednesday, June 19, 2019 11:51 AM
Page 178 of 212

9-51
9
suddenly, have a Yamaha dealer check and
repair the vehicle before any further opera-
tion.EBU36550Brake and YCC-S clutch fluid replace-
mentComplete fluid replacement should be done
only by trained Yamaha service personnel.
Have a Yamaha dealer replace the following
components during periodic maintenance or
when they are damaged or leaking.
Replace the oil seals every two years.
Replace the brake and YCC-S clutch hoses
every four years.EBU36540YCC-S clutchThis model is equipped with a hydraulic
clutch, therefore, it is necessary to check the
YCC-S clutch fluid level and check the hy-
draulic system for leak age before each drive.
If the YCC-S clutch plates wear out, shifting
becomes rough or clutch slippage will occur, causing poor acceleration. If any of the above
occurs, have a Yamaha dealer check the
YCC-S clutch.
EBU32531Checking the brake pedalHave a Yamaha dealer check the brakes at
the intervals specified in the periodic mainte-
nance chart. There should be no free play in
the brake pedal. The brakes should operate
smoothly and there should be no brake drag.
If the brakes feel soft or spongy, this could in-
dicate air in the brake system. Have a
Yamaha dealer check the brake system if necessary.
UBAS7AE0.book Page 51 Wednesday, June 19, 2019 11:51 AM
Page 179 of 212
9-52
9
EBU35821Checking the accelerator pedalThe accelerator pedal should operate
smoothly and spring back to position when
released. If the pedal free play is out of spec-
ification, have a Yamaha dealer adjust or re-
place the throttle wire.
EBU35194Parking brake lever free play adjust-
mentPeriodically check the parking brake lever
free play and adjust it if necessary.1. Shift the transmission into first gear.
2. Check the parking brake lever free play.
The maximum free play is equal to one
click of the parking brake lever. If neces-
sary, adjust the free play as follows.
1. Brake pedal
2. No brake pedal free playAccelerator pedal free play:10.0-25.0 mm (0.39-0.98 in)
1
2
1. Accelerator pedal
2. Accelerator pedal free play
2
1
UBAS7AE0.book Page 52 Wednesday, June 19, 2019 11:51 AM
Page 180 of 212
9-53
9
3. Remove panel B. (See page 9-11.)
4. Release the parking brake lever.
5. Slide the rubber cover back on the park-ing brake cable.
6. Loosen the locknut. 7. Turn the adjusting nut in direction (a) to
increase the free play or in direction (b) to
decrease the free play.
8. Tighten the locknut, and then slide the
rubber cover to its original position.
9. Install the panel.1. Parking brake lever free play
1
1. Rubber cover
2. Adjusting nut
3. Locknut
1
(b)
(a)
3
2
UBAS7AE0.book Page 53 Wednesday, June 19, 2019 11:51 AM
Page 181 of 212

9-54
9
EBU36620Brake light switchThe brake light, which is activated by the
brake pedal, should come on just before
braking takes effect. Since the brake light
switch is a component of the YCC-S system,
it must be adjusted by a Yamaha dealer, who
has the necessary professional knowledge
and experience.EBU35930Cable inspection and lubrication
WARNING
EWB03380Damaged cables could restrict operation,
which may cause an accident or injury. In-
spect control cables frequently and re-
place damaged cables. Corrosion can
result when the outer covering of control
cables becomes damaged. Cables can
also become frayed or kinked.
Lubricate the cable ends. If the cables do not
operate smoothly, ask a Yamaha dealer to re-
place them.EBU36760Pedal lubricationThe pivoting parts of the brake and accelera-
tor pedals should be lubricated periodically to
prevent rust and ensure smooth operation.Recommended lubricant:Yamalube LubezAll (synthetic lubricant spray with PTFE)
UBAS7AE0.book Page 54 Wednesday, June 19, 2019 11:51 AM
Page 182 of 212
9-55
9
EBU32583Checking the stabilizer bushesThe stabilizer bushes must be checked for
cracks or damage at the intervals specified in
the periodic maintenance chart. Have a
Yamaha dealer replace the stabilizer bushes if necessary.
Front Rear
EBU35211Upper and lower arm pivot lubrication
(left and right)Lubricate the upper and lower arm pivots with
a grease gun.
Recommended lubricant:
Lithium-soap-based grease
UBAS7AE0.book Page 55 Wednesday, June 19, 2019 11:51 AM
Page 183 of 212
9-56
9
Front
Rear
EBU32590Rear knuckle upper and lower pivot lu-
brication (left and right)Lubricate the knuckle upper and lower pivots
with a grease gun.EBU35220Drive shaft universal joint lubricationLubricate the drive shaft universal joint with a
grease gun.
Recommended lubricant:Lithium-soap-based grease
Recommended lubricant:Lithium-soap-based grease
UBAS7AE0.book Page 56 Wednesday, June 19, 2019 11:51 AM
Page 184 of 212
9-57
9
EBU32600Steering shaft lubricationLubricate the pivot points.
EBU32610Wheel removal1. Loosen the wheel nuts.
2. Elevate the vehicle and place a suitablestand under the frame.
3. Remove the nuts from the wheel.
4. Remove the wheel.
Recommended lubricant: Lithium-soap-based grease
Recommended lubricant: Lithium-soap-based grease
UBAS7AE0.book Page 57 Wednesday, June 19, 2019 11:51 AM