Lubricating The Drive Chain; Checking And Adjusting The Steering Head - Yamaha YZFR1Y(C) 2009 Service Manual

TIP
Place the vehicle on a suitable stand so that
the rear wheel is elevated.
2. Move the rear wheel several times and find
the tightest position of drive chain.
3. Check:
• Drive chain slack "a"
Out of specification → Adjust.
Drive chain slack (when adjust-
ing the drive chain)
25.0–35.0 mm (0.98–1.38 in)
Drive chain slack (when replac-
ing the
sprocket)
20.0–30.0 mm (0.79–1.18 in)
4. Loosen:
• Wheel axle nut "1"
5. Adjust:
• Drive chain slack
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a. Loosen both locknuts "1".
b. Turn both adjusting bolts "2" in direction "a"
or "b" until the specified drive chain slack is
obtained.
Direction "a"
Drive chain is tightened.
Direction "b"
Drive chain is loosened.
drive chain and
3-20
PERIODIC MAINTENANCE
TIP
To maintain the proper wheel alignment, adjust
both sides evenly.
c. Tighten the wheel axle nut to specification.
Wheel axle nut
150 Nm (15 m·kgf, 110 ft·lbf)
d. Tighten the locknuts to specification.
Locknut
16 Nm (1.6 m·kgf, 11 ft·lbf)
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EAS21440

LUBRICATING THE DRIVE CHAIN

The drive chain consists of many interacting
parts. If the drive chain is not maintained prop-
erly, it will wear out quickly. Therefore, the drive
chain should be serviced, especially when the
vehicle is used in dusty areas.
This vehicle has a drive chain with small rub-
ber O-rings between each side plate. Steam
cleaning, high-pressure washing, certain sol-
vents, and the use of a coarse brush can dam-
age these O-rings. Therefore, use only
kerosene to clean the drive chain. Wipe the
drive chain dry and thoroughly lubricate it with
engine oil or chain lubricant that is suitable for
O-ring chains. Do not use any other lubricants
on the drive chain since they may contain sol-
vents that could damage the O-rings.
Recommended lubricant
Chain lubricant suitable for O-
ring chains
EAS21500
CHECKING AND ADJUSTING THE STEER-
ING HEAD
1. Stand the vehicle on a level surface.