3-48 ENGINE
CYLINDER BORE
Inspect the cylinder wall for any scratches, nicks or other dam-
age. Measure the cylinder bore diameter at six places.
& Cylinder bore
Standard: 98.000 – 98.015 mm (3.8583 – 3.8589 in)
" 09900-20508: Cylinder gauge set
PISTON DIAMETER
Using a micrometer, measure the piston outside diameter at
10 mm (0.4 in) from the piston skirt end. If the measurement
is less than the limit, replace the piston.
& Piston diameter
Service Limit: 97.880 mm (3.8535 in)
" 09900-20204: Micrometer (75 – 100 mm)
PISTON-TO-CYLINDER CLEARANCE
As a result of the previous measurement, if the piston to cylinder
clearance exceeds the following limit, replace both cylinder and
piston.
& Piston to cylinder clearance
Service Limit: 0.12 mm (0.0047 in)
10 mm
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