Yamaha YFM400FAR, Service Manual

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ENG
MIDDLE GEAR
●
Install each bearings
1
onto the yoke.
CAUTION:
Check each bearing. The needles can
easily fall out of their races. Slide the yoke
back and forth on the bearings; the yoke
will not go all the way onto a bearing if a
needle is out of place.
●
Press each bearing into the U-joint using a
suitable socket.
NOTE:
The bearing must be inserted far enough into
the U-joint so that the circlip can be installed.
●
Install the circlips
2
into the groove of each
bearing.
*****************************************************
INSTALLING THE MIDDLE DRIVE SHAFT
1.Tighten:
●
Nut (middle drive pinion gear)
1
NOTE:
Secure the middle drive shaft in a vise with a
clean rag.
2.Lock the threads with a drift punch.
New
T
R
.
.
130 Nm (13.0 m • kg, 94 ft • lb)
MEASURING THE MIDDLE GEAR
BACKLASH
1.Measure:
●
Gear lash
*****************************************************
Measurement steps:
●
Temporarily install the left crankcase.
●
Attach the pinion gear fix clamp
2
to the
middle drive shaft.
Middle gear lash:
0.1 ~ 0.3 mm (0.004 ~ 0.012 in)
Pinion gear fix clamp:
P/N. YM-04129, 90890-04129