1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 440Get this manual

1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 440

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Problem Diagnosis Condition Pressure below specification idle Recommended Range 1.0 3.0 PSI (6.8 20.5 kPa) Possible Cause Poppet valve spring defective (weak, broken, missing) Defective poppet valve s