Piston And Piston Ring Installation; Crankshaft And Piston Installation - Yamaha 40V Service Manual

POWR
CRANK SHAFT AND PISTON

Piston and piston ring installation

1. Install:
Piston ring (2nd)
Piston ring (top)
CAUTION:
Take care not to scratch the piston or
break piston rings.
Align the each ring end gap with their
locating pins.
After fitting the rings, check that they
move smoothly.
NOTE:
Piston rings should be replaced as a set.

Crankshaft and piston installation

1. Install:
Small end bearing needle
Needles per piston:
31 pieces
Small end bearing needle
installer:
YB-06106/90890-06526
2. Install:
Piston 1
Piston pin 2
Piston pin clip 3
CAUTION:
Do not allow the clip open ends to meet
the piston pin slot.
NOTE:
Mold mark a faces in the same direction
as the "UP" mark on the piston.
When no piston is replaced, be sure to re-
install the pistons in their original cylin-
der.
5-37
E