1989 Johnson/Evinrude 40 thru 55 HP Models Service Manual P/N 507755, Page 36Get this manual

1989 Johnson/Evinrude 40 thru 55 HP Models Service Manual P/N 507755, Page 36

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Tune-Up Procedure 1 Visually inspect engine for leaks, missing other obvious defectsloose parts,
IF the engine shows variation greater than 15 psi (100 kPa), check for: damaged head gasket damag

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