Service Points; Piston Pin Clip Removal; Piston Pin And Small End Bearing Removal; Piston Ring Removal - Yamaha 40V Service Manual

POWR
CRANK SHAFT AND PISTON

SERVICE POINTS

Piston pin clip removal

1. Remove:
Piston pin clip
NOTE:
Take care not to damage piston pin hole
edge.

Piston pin and small end bearing removal

1. Remove:
Piston pin clip
Small end needle bearing
NOTE:
When the piston pins, pistons, and small
end needle bearings are reused, they
should be marked with No. 1, 2 and 3 so
that they are not confused.

Piston ring removal

1. Remove:
Piston ring
NOTE:
Remove the piston ring from the piston by
opening the ring to the least possible width.

Bearing removal

1. Remove:
Bearing
NOTE:
Hold the bearing with the bearing separa-
tor, and forth out the crankshaft with a
press.
Bearing separator:
YB-06219/90890-06534

Piston inspection

1. Measure:
Piston diameter
Use a micrometer.
Out of specification → Replace.
5-33
E