Reassembly - BOMBARDIER Johnson 90 Service Manual

POWER UNIT
CYLINDER HEAD ASSEMBLY
Reassembly
Reassembly is reverse order of disassembly with special
attention to the following steps.
VALVE
1. lnstall valve spring seat
CD
to cylinder head.
2. After applying engine oil to stem seal
(2)
and spindle of
special tool (lnstaller attachment), fit stem seal to spindle.
Then, pushing special tool by hand, install stem seal to
valve guide.
3. Check to be sure that seal is properly fixed to valve
guide.
mm
lnstaller attachment
®
lnstaller handle @
IACAUTION
¡
Do not reuse stem seal once removed. Always use a new
stem seal.
4. Apply engine oil to stem seal, valve guide bore and valve
stem.
5. lnstall valve @ to valve guide.
NOTE:
Reassemble each va/ve and va/ve spring to their original
position.
6. lnstall valve spring @, and valve retainer @.
NOTE:
Set va/ve spring in place with narrow spiral area facing va/ve
seat.
3
1. Larga-pitch
2. Small-pitch
3. Valva spring
retaíner sida
4. Valva spring seat
sida
4
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