Yamaha BEARTRACKER YFM250XC, Service Manual

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ENG
INSPECTION AND REPAIR
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Crankshaft reassembling point:
The crankshaft
1 and the crank pin 2 oil
passages must be properly interconnected
with a tolerance of less than 1 mm (0.04 in).
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BALANCER DRIVE GEAR AND DRIVEN
GEARS
1.Inspect:
●
Balancer drive gear teeth 1
●
Balancer driven gear teeth 2
Wear/Damage
→
Replace both gears.
PRIMARY GEARS AND STARTER
1.Inspect:
●
Drive gear 1
●
Driven gear 2
Scratches/Wear/Damage
→
Replace.
Excessive noises during operation
→
Replace both gears.
2.Inspect:
●
Idler gear 1 (starter)
●
Idler gear shaft 2
Scratches/Wear/Damage
→
Replace.
●
Driven gear 3 (starter)
●
Roller contact surface 4
●
Bearing 5 (driven gear)
Scratch/Wear/Damage
→
Replace starter
driven gear assembly.
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Starter clutch operation
●
Install the starter driven gear to the starter
clutch, and hold the starter clutch.
●
When turning the starter driven gear
counter clockwise
Å
, the starter clutch
and the driven gear should be engaged.
If not, the starter clutch is faulty. Replace it.
●
When turning the starter driven gear
clockwise
ı
, the starter driven gear
should turn freely. If not, the starter clutch
is faulty. Replace it.
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