Suzuki GN125F, Service Manual

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E N G I N E
3-34
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Inspect the gear shifting hub guide slot.
Replace the gear shifting hub if the guide slot is damage.
Inspect each bush, gear inner surface and gear teeth face
for abnormal wear or poor lubrication.
Remove the bearing locating plates on left and right
crankcase.
Rotate the inner race by hand to inspect for an abnormal
noise and a smooth rotation and inspect to see if the outer
race is movable in the crankcase.
Replace the bearing if there is something unusual.
BEARING REMOVAL
Remove the crankshaft bearing, countershaft bearing and
driveshaft bearing with the special tool.
09921-20240: Bearing remover