ENGINE
3.45
compress the new clip more than necessary upon
installation to prevent loss of radial tension. Severe
engine damage may result if circlips are re-used or
deformed during installation.
4. Apply clean engine oil to the piston rings, ring
lands, pistonpin bore,pistonpin, and pistonskirt.
Lubricate the connecting rod (both ends),
balancer drivegear, and crankshaft main bearing
area.
Mag
or
:
5. Install the piston on the connecting rod with the
arrow or : mark facing the magneto (RH) end of
thecrankshaft. Thepiston pinshouldbeapushfit
in the piston.
6. Install the other circlip with the gap facing up or
downandtangoutward. (SeeCautionwithStep3
above). Push the piston pin in both directions to
make sure the clips are properly seated in the
groove.
CYLINDER INSTALLATION
1. Placethedowelpinsinthecrankcaseandinstalla
new cylinder base gasket.
A
2. Position the Piston Support Block (PN 2870390)
(A) beneath the piston skirt to support the piston
during cylinder installation.
3. Apply clean engine oil to the ring compressor
(Snap Ont PN RCL30) and install the
compressor following manufacturers
instructions. CAUTION: Make sure the oil
controlring upper railtab is positioned properly in
thenotchofthepiston. V erifyallringendgapsare
correctly located.
4. Applycleanengineoilliberally tothecylinderbore
and tapered area of the sleeve. Install the
cylinder witha slight rockingmotionuntiltherings
are captive in the sleeve.
5. Remove the ring compressor and support block.
6. Push the cylinder downward until fully seated on
the base gasket.
7. Apply a light film of oil to the threads and flange
surface of the cylinder mounting bolts.
8. Install all fourboltsfingertight. Rotate theengine
and position the piston at BDC.
NOTE: If cam chain is installed, hold it up while
rotatingtheenginetoavoiddamagetothe chain,drive
sprocket teeth, or tensioner blade.
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