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Mercury 305 CID - Page 231

Mercury 305 CID
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ENGINES - 3A-3990-823225--1 1096
5. Place cap on intake valve and/or rotator on ex-
haust valve.
6. While compressing valve spring with valve spring
compressor, install oil seal in lower groove of
valve stem, making sure seal is not twisted. A
light coating of oil will help prevent twisting.
72333
a - Valve Spring Compressor (J-8062)
a
7. Install valve locks (grease may be used to hold
them in place) and slowly release tool, making
sure locks seat properly in upper grooves of valve
stem.
72331
1 - Valve Locks
2 - Retainer
3 - Rotator
4 - Cap
5 - Valve Guide Oil Seal
6 - Oil Shield
7 - Valve Stem Oil Seal
8 - Inner Spring
9 - Outer Spring
10 -Intake Valve
11-Exhaust Valve
1
5
7
4
3
6
1
2
8
9
10
11

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