Inspection Of Piston Pins; Inspection Of Connecting Rod; Small End Inner Diameter; Inspection Of Connecting Rod Big End Side Clearance - TOHATSU MFS 9.9 Owner's Manual

32) Inspection of Piston Pins

1. Measure piston pin outer diameter. Replace piston pin if
outer diameter is less than specified value.
Piston Pin Outer Diameter : Standard Value
16.00 mm (0.6299in)
Functional Limit :
15.97 mm (0.6287 in)
Measure piston pin boss inner diameter a.
2.
Piston Pin Boss Inner Diameter: Standard value
16.002 mm (0.63000 in)
3. Obtain clearance between piston pin and pin boss. Replace
piston pin or piston if the clearance is over specified value.
Clearance Between Piston Pin and Pin Boss :
0.002 - 0.012 mm (0.00008 - 0.00047 in)
Functional Limit :
0.040 mm (0.00157 in)

33) Inspection of Connecting Rod

Small End Inner Diameter

Measure connecting rod small end inner diameter a. Replace
1.
connecting rod if the diameter is over specified value.
Connecting Rod Small End Inner Diameter a : Standard Value
16.01 mm (0.6303 in)
Functional Limit :
16.04 mm (0.6315 in)
34) Inspection of Connecting Rod Big
End Side Clearance
Measure connecting rod big end side clearance a. Replace
1.
connecting rod and/or crank shaft if the clearance is over
specified value.
Connecting Rod Big End Side Clearance a :
0.10 - 0.25 mm (0.0039 - 0.0098 in)
Functional Limit :
0.60 mm (0.0236 in)
4st 9.9/15/20 2008
a
a
5
a
5-45