sensor YAMAHA YFM250R-W 2012 Owners Manual

8-30
8
TIPA rod can be obtained at a Yamaha dealer to make
this adjustment.4. Shift the transmission into neutral.
5. To tighten the drive chain, push the ATV back-
ward. To loosen the drive chain, push the ATV
forward. NOTICE: Improper drive chain
slack will overload the engine as well as
other vital parts of the ATV and can lead to
drive chain slippage or breakage. To pre-vent this from occurring, keep the drive
chain slack within the specified limits.
[ECB00542]
6. Pull the rod out, and then tighten the rear axle
pinch bolts to the specified torque in the order
shown.
7. Check that the clearance between the speed
sensor and the speed sensor rotor is 3–5 mm
(0.12–0.19 in). If the clearance is out of spec-
ification, adjust the speed sensor position as
follows.
1. Rear wheel axle pinch bolt
2. Rod
3. Drive chain tensioner
4. Hole
4 3
2
11
Tightening torque:
Rear axle pinch bolt:
21 Nm (2.1 m·kgf, 15 ft·lbf)
12
5634
78
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8
TIPThis specified clearance is necessary for the
speedometer to indicate an accurate reading.8. Loosen the speed sensor bracket bolt.
9. Adjust the position of the speed sensor so that
the clearance between the sensor and the
speed sensor rotor is 3–5 mm (0.12–0.19 in).
10. Tighten the bolt to the specified torque.
EBU24882Lubricating the drive chain The drive chain must be cleaned and lubricated at
the intervals specified in the periodic maintenance
and lubrication chart, otherwise it will quickly wear
out, especially when riding in dusty or wet areas.
Service the drive chain as follows.NOTICEECB00561The drive chain must be lubricated after wash-
ing the ATV or riding in the rain or wet areas.1. Clean the drive chain with kerosene and a
small soft brush. NOTICE: To prevent dam-
aging the O-rings, do not clean the drive
chain with steam cleaners, high-pressure
washers or inappropriate solvents.
[ECB00571]
1. Speed sensor rotor
2. Speed sensor
3. Speed sensor bracket bolt
4. Clearance
3 2
4
1
Tightening torque:
Speed sensor bracket bolt:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
U33B71E0.book Page 31 Wednesday, August 10, 2011 9:01 AM