Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 117Get this manual

Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 117

CYLINDER HEAD
3Rotate flywheel until raised mark on camshaft is visible through fuel pump hole and notched mark on flywheel aligns with TDC mark on block castingPiston is now at top dead center and valve clearance may now be checked with feeler gauge

- Raised Mark on CamshaftNotched Mark on FlywheelTDC MarkBTDC Mark on Block Casting25 BTDC Mark on Block Casting

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