Checking The Piston Pin Diameter; Checking The Connecting Rod Small End Inside Diameter And Big End Inside Diameter; Checking The Connecting Rod Big End Side Clearance; Checking The Crankshaft - SELVA MARINE Kingfish 25 Service Manual

POWR
Piston pin boss inside diameter a:
15.974–15.985 mm (0.6289–0.6293 in)
TIP:
When measuring the piston boss inside
diameter, do not measure it at the ring
groove b.

Checking the piston pin diameter

1. Measure the piston pin diameter a.
a
Piston pin diameter a:
15.965–15.970 mm (0.6285–0.6287 in)
Checking the connecting rod small
end inside diameter and big end
inside diameter
1. Tighten the connecting rod bolts 1 to the
specified torques in 2 stages.
Connecting rod bolt 1:
1st: 6 N·m (0.6 kgf·m, 4.4 ft·lb)
2nd: 17 N·m (1.7 kgf·m, 12.5 ft·lb)
2. Measure the connecting rod small end
inside diameter a and big end inside
diameter b.
b
1
7-59
Power unit
a
Connecting rod small end inside
diameter a:
15.985–15.998 mm (0.6293–0.6298 in)
Connecting rod big end inside
diameter b:
36.000–36.024 mm (1.4173–1.4183 in)
Checking the connecting rod big end
side clearance
1. Measure the connecting rod big end side
clearance a.
Connecting rod big end side clearance a
(reference data):
0.050–0.220 mm (0.0020–0.0087 in)

Checking the crankshaft

1. Measure the crankshaft journal diameter
a, crankpin diameter b, and crankpin
width c.
a
c
b
a
a