Suzuki GN125F, Service Manual

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P E R I O D I C M A I N T E N A N C E
2-5
MUFFLER BOLTS
Muffler bolt : 11~15 N•m
Inspect initial 1 000 km and tighten every 5 000 km
Inspect initial 1 000 km and every 5 000 km.
Cylinder head nut: 21~25 N•m
Tighten the muffler bolts to the specified torque.
Tighten four M10 nuts to the specified torque when the
engine is cold.
VALVE CLEARANCE
Inspect initial 1 000 km and every 5 000 km
Excessive valve clearance results in valve noise, insufficient
valve clearance results in valve damage and reduced power.
At the distances indicated above, check and adjust the valve
clearance to the following specification.
Remove the spark plug, and
valve inspection caps .
Remove the generator cover cap and rotate the generator
rotor with wrench anticlockwise until the line on the rotor is
aligned with the center(arrow mark) of hole on the crankcase
to set the piston at TDC fo the compression stroke.
valve timing inspection plug
CYLINDER HEAD AND CYLINDER NUTS
Cylinder nut: 8-12 N m
•
Tighten the cylinder nut and to the specified torque
.
T
1
1
2 3
1
CAUTION
Valve clearance shoukld be checked when the engine is
cold. Both the intake and exhaust valve must be
checked and adjusted when the piston is at TDC of the
compression stroke.