BRP Evinrude E-TEC G2 Service Manual page 252

Powerhead
Powerhead Inspection
Crankshaft
Measure the diameter of each crankpin and main
bearing journal. The lower main bearing journal
would only be measured if the bearing was
removed for another reason.
Visually inspect crankcase seal rings for wear,
grooves, or chipping. If rings appear worn, use a
micrometer to measure ring thickness.
Replace rings that are less than 0.154 in. (3.9
mm) thick.
Install seal rings in their original positions on
crankshaft after inspection.
252
Cylinder Bore
Use a Cylinder Bore Gauge to inspect each cylin-
der bore for an out-of-round, oversize, or tapered
condition. Be sure the gauge is perfectly square in
the bore when measuring.
009709
Measure as shown
Measure each cylinder in at least two areas. Each
area should be measured twice. The difference
between the two measurements in each area is
the cylinder out-of-round dimension.
•
The cylinder must not be out-of-round by more
than 0.004 in. (0.10 mm).
The dimensional difference between the two
areas is cylinder taper.
•
The cylinder taper must not exceed 0.002 in.
(0.05 mm).
009685
1. Cylinder taper
The difference between the measurements and
standard bore is cylinder oversize. For dimen-
sions, refer to Service Specifications on p. 12.
•
The cylinder must not be oversized by more
than 0.003 in. (0.08 mm).
009695
DR1119