Do you have a question about the 5 SERIES and is the answer not in the manual?
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RAY Smith
May 4, 2025
how to ck.engin compression
1 comments:
Mr. Anderson
May 17, 2025
To check engine compression on a Mercury 5 Series:
1. Remove the spark plugs. 2. Install a compression gauge in the spark plug hole. 3. Hold the throttle plate at Wide Open Throttle (W.O.T.). 4. Crank the engine until the compression reading peaks. 5. Record the compression reading for each cylinder.
- If the decompression assembly is in operation: Maximum 50 psi, Minimum 36 psi. - If the decompression assembly is not in operation (exhaust rocker arm removed): Maximum 130 psi, Minimum 100 psi.
A reading below 36 psi may indicate total engine wear.
This answer is automatically generated
NDE Nelson D Eyer
April 18, 2025
how long does the 5hp run on one inboard tank of gas
Need help?
Do you have a question about the 5 SERIES and is the answer not in the manual?
Questions and answers
how to ck.engin compression
To check engine compression on a Mercury 5 Series:
1. Remove the spark plugs.
2. Install a compression gauge in the spark plug hole.
3. Hold the throttle plate at Wide Open Throttle (W.O.T.).
4. Crank the engine until the compression reading peaks.
5. Record the compression reading for each cylinder.
- If the decompression assembly is in operation: Maximum 50 psi, Minimum 36 psi.
- If the decompression assembly is not in operation (exhaust rocker arm removed): Maximum 130 psi, Minimum 100 psi.
A reading below 36 psi may indicate total engine wear.
This answer is automatically generated
how long does the 5hp run on one inboard tank of gas