Suzuki GP125 - Engine Components Inspection and Servicing

BEARINGS
Wash the bearing with cleaning solvent and
lubricate with motor oil before inspecting
* Hold the bearing by the inner race.
* Turn the outer race and check to see that the
outer race turns smoothly. If it does not turn
lightly, quietly and smoothly, or if noise is
heard, the bearing is defective and must be
replaced with a new опе.
OIL SEALS
Damage to the lip © of the oil seal may result
in leakage of the mixture or oil. Inspect for
damage
and
be
sure
to
replace
damaged
parts
if
there are any.
ENGINE COMPONENTS INSPECTION AND SERVICING
CRANKSHAFT
Crankshaft deflection
Support crankshaft by “V” blocks, with the dial
gauge rigged to read the runout. Deflection is
total dial reading, and is specified to be within
the following limit
Service Limit 0.05 mm (0.002 in)
Excessive crankshaft deflection is often res.
ponsible for abnormal engine vibration. Such vi
bration shortens engine life.
Condition of big end bearing
Wear on the big end of the connecting rod can
be estimated by checking the movement of the
small end of the rod. This method can also
check the extent of wear on the parts of the
connecting rod’s big end. If wear exceeds the
limit, connecting rod, crank pin and crank pin
bearing should all be replaced.
Service Limit
3.0 mm (0.12 in)