Yamaha LB50IIAC - Crankcase

Crankcase
1. Apply Yamaha Bond No. 4 to the
mating surfaces of case halves. Apply
thoroughly, overall mating surfaces.
It is advisable that the right hand case
mating surface be coated.
2.
Set the crankcase right half onto the
shafts and tap lightly on the case with a
soft hammer to assemble.
NOTE:------------
Do not tap on machined surface or end
of crankshaft.
After putting together both case halves.
check the axles. shift cam and
crankshaft for smooth rotation by tur-
ning by hand.
After tightening the case bolts. check
again
for smooth rotation.
Interference for all bolts is about 10 mm.
Be careful so that all bolts are in correct
position.
3. Install all crankcase bolts and tighten in
stages using crisscross pattern.
4.
After reassembly, apply a liberal coating
of two-stroke oil to the crank pin and
bearing and
into each crankshaft bear-
ing oil delivery hole.
-79-