Installing The Cylinder And Cylinder Head - Yamaha PW50W 2007 Service Manual

CYLINDER HEAD, CYLINDER AND PISTON
1
a
2
2. Install:
9 Top ring 1
9 2nd ring 2
(with expander ring 3)
NOTE:
9 Be sure to install the top ring and 2nd ring so
that the manufacturer's marks or numbers
face up.
9 Align the piston ring gap with the pin 4.
9 After installing the piston ring, check the
smooth movement of it.
3. Install:
9 Piston 1
9 Piston pin
9 Piston pin clips 2
NOTE:
9 Apply engine oil the piston pin.
9 Make sure the arrow mark a on the piston
points towards the exhaust side of the cylin-
der.
9 Before installing the piston pin clip, cover the
crankcase opening with a clean rag to pre-
vent the clip from falling into the crankcase.
INSTALLING THE CYLINDER AND CYLIN-
DER HEAD
1. Install:
9 Gasket
2. Lubricate:
9 Piston
9 Piston rings
9 Cylinder wall
(with the recommended lubricant)
Recommended lubricant
Engine oil
5-16
ENG