Yamaha YFM250XL(C) Service Manual page 196

6
MIDDLE GEAR SERVICE
Shim location
Å = Drive pinion gear shim
ı = Driven pinion gear shim
Ç = Reverse gear shim
Î = Middle driven shaft shim
1 Drive pinion gear
2 Driven pinion gear
3 Reverse gear
4 Middle driven shaft
Replaced parts
Crankcase
Drive pinion gear
Driven pinion gear
Reverse gear
Bearing housing
Middle driven shaft
Å = a - b
ı = c - d - e - f
Ç = d - g - h - i
Î = j + c - e - ı - k - l - 0.25
1 Crankcase (left)
2 Drive pinion gear
3 Driven pinion gear
4 Middle driven shaft
5 Reverse gear
6 Bearing housing
NOTE:
The gear back lash should be:
0.1 mm ~ 0.2 mm forward
0.1 mm ~ 0.25 mm rear
Adjust the middle driven shaft in order to
obtain the following thrust free play.
0.1 mm ~ 0.4 mm
6 - 10
DRIV
Adjust shim
Å ı Ç Î
Å
ı Î
Ç Î
Ç Î
Î