Yamaha YZF-R1S Owner's Manual download pdf (Page 73)

PERIODIC MAINTENANCE AND MINOR REPAIR

6-25

EAU22760

Drive chain slack

The drive chain slack should be

checked before each ride and adjusted

if necessary.

EAU22770

To check the drive chain slack

1. Place the motorcycle on a level

surface and hold it in an upright po-

sition.

NOTE:

When checking and adjusting the drive

chain slack, the motorcycle should be

positioned straight up and there should

be no weight on it.

2. Shift the transmission into the neu-

tral position.

3. Move the rear wheel by pushing

the motorcycle to locate the tight-

est portion of the drive chain, and

then measure the drive chain slack

as shown.

4. If the drive chain slack is incorrect,

adjust it as follows.

EAU34310

To adjust the drive chain slack

1. Loosen the axle nut and the lock-

nut on each side of the swingarm.

2. To tighten the drive chain, turn the

adjusting bolt on each side of the

swingarm in direction (a). To loos-

en the drive chain, turn the adjust-

ing bolt on each side of the

swingarm in direction (b), and then

push the rear wheel forward.

NOTE:

Using the alignment marks on each

side of the swingarm, make sure that

both chain pullers are in the same posi-

tion for proper wheel alignment.

CAUTION:

ECA10570

Improper drive chain slack will over-

load the engine as well as other vital

parts of the motorcycle and can lead

to chain slippage or breakage. To

prevent this from occurring, keep

the drive chain slack within the

specified limits.

Drive chain slack:

20.0–25.0 mm (0.79–0.98 in)

1. Drive chain slack

1. Axle nut

2. Drive chain slack adjusting bolt

3. Locknut

4. Alignment marks

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Yamaha YZF-R1S Owner's Manual Page 73

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