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Mercury 305 CID - Valve Springs - Checking Tension

Mercury 305 CID
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3A-36 - ENGINES 90-823225--1 1096
2. Ream valve guide bores, as shown.
72337
3. Remove the sharp corner created by reamer at
top of valve guide.
Valve Springs - Checking Tension
Using valve spring tester, as shown, check valve
spring tension with dampers removed. Refer to
“Specifications.”
IMPORTANT: Springs should be replaced if not
within 10 lb. ft. (13.5 Nm) of specified tension.
72308
a - Valve Spring Tester (P/N J-8056)
b - Torque Wrench
b
a

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