Yamaha SXV70SJ Supplementary Service Manual - Eng
5-14
ENG
CYLINDER HEAD AND CYLINDER
INSTALLATION
1. Install:
•
Reed valves
•
Reed valve stoppers
NOTE:
•
Place the reed valve
1
with its concave surface
facing toward the reed valve seat
2
.
•
Fit the reed valve stopper cut
a
into the corre-
sponding cut
b
on the reed valve.
2. Tighten:
•
Screws
1
Screw (reed valve)
1
:
1 Nm (0.1 m · kg, 0.7 ft · lb)
LOCTITE
®
NOTE:
Tighten each screw gradually to avoid warping.
3. Install:
•
Small end bearing
•
Piston
•
Piston pin
•
Piston pin clip
•
Piston rings
NOTE:
•
The arrow
a
on the piston must point toward to the
front of the engine.
•
Before installing the piston pin clip, cover the
crankcase with a clean rag so that you do not
accidentally drop the pin clip and other material into
the crankcase.
•
Position each piston very carefully in its original
place.
CAUTION:
•
Always use new piston pin clips.
•
Do not allow the clip gap to align with the piston
pin slot.
T
R
.
.
SCH5280
SCH5290
SCH5300
SCH5310