TOHATSU MFS 8B Service Manual page 137

1. Remove carbon build-up of combustion chamber, and check
for deterioration.
2. Use straight edge
distortion of cylinder head in the directions shown. Replace if
the distortion is over specified value.
Cylinder Head Distortion Limit :
0.10 mm (0.004 in)
1. Use micrometer, cylinder gauge, depth gauge and thickness
gauge to measure dimensions shown below. Replace oil
pump if over specified value.
Functional Limit :
Clearance between Outer Rotor and Body
0.36 mm (0.0142 in)
Clearance between outer and inner rotors
0.16 mm (0.0063 in)
Side clearance between rotor and body
0.11 mm (0.0043 in) (including wear of oil pump cover)
Height of Outer Rotor
9.96 mm (0.3921 in)
Pump Body Inner Diameter
29.04 mm (1.1433in)
4st 8/9.8 2016
and thickness gauge to check
:
:
:
:
:
5-33