Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 244Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 244

CYLINDER BLOCKCRANKCA SE
PISTON RIND END GAP CLEARANCE
1Measure piston ring end gap clearanceReplace piston ring if out of specification NOTE: Ring should be level for measurement, push ring into bore with crown of piston
Piston Ring End Gap

0.0060.012 in(0150.30 mm) .0120.020 in(0.300.50 mm) 0.0080.028 in(0.200.70 mm)

Crankshaft

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