Inspection; Cylinder Bore - Mercury 40 Service Manual

CYLINDER BLOCK/CRANKCASE
9. Remove crankshaft from block.
a -

Inspection

Cylinder Bore

MEASURING CYLINDER BORE
1. Measure the cylinder bore diameter "d" at three locations in both X and Y axis.
2. If the cylinder bore is beyond the standard limits listed in the tables below, it will be nec-
essary to re-bore the cylinder to accept the oversize piston.
Taper or Out-of-Round Maximum
Taper or Out-of-Round Maximum
Page 4B-18
a
Main Bearings – Do Not Interchange. Reinstall in Original Locations
Cylinder Bore Specifications
Diameter (Standard)
Limit
Diameter 0.020 in.
(0.50 mm) Oversize
Limit
2.4803 - 2.4809 in.
(63.000 - 63.015 mm)
0.003 in. (0.08 mm)
2.5003 - 2.5009 in.
(63.500 - 63.515 mm)
0.003 in. (0.08 mm)
90-828631R3 MARCH 1999
55837