Sym Wolf SB 250 Ni Service Manual page 152

9. Crank / Crankcase / Shifting gear
Install shift forks (left, right) on counter shaft, and
install the shift fork pin into shifting drum groove.
Install shift fork (center) on main shaft, and install
the shift fork pin into shifting drum groove. Align
the holes of shift forks, then insert gear fork guide
shaft.
Caution
Make sure all parts move smoothly; rotate the

gear shift drum to neutral gear. (rotate the
main shaft, and the counter shaft will not
rotate simultaneously)
Install crankshaft and balancing shaft to the right
crankcase.
Install the new crankcase gasket and dowel pins.
Install left crankcase.
Tighten crankcase left side screws.
Torque value: 0.8~1.2kgf-m
Coat grease to the new counter shaft oil seal and
install it to crankcase.
Tighten crankcase right side bolts.
Torque value: 0.8~1.2kgf-m
9-12
Guide shaft
Left
Center
Right
boltX2