KYMCO SUPER8 50 2T User Manual

10. CRANKCASE/CRANKSHAFT
10-2
SUPER8 50 2T
SERVICE INFORMATION
GENERAL INSTRUCTIONS
• This section covers crankcase separation to service the crankshaft.
• The following parts must be removed before separating the crankcase.
Engine (
Ö
Section 5) Driven pulley (
Ö
Section 9)
Carburetor (
Ö
Section 11) A.C. generator (
Ö
Section 7)
Oil pump (
Ö
Section 4) Cylinder head/cylinder (
Ö
Section 6)
Reed valve (
Ö
Section 11)
• When the left crankcase must be replaced, remove the following part in addition to the above.
Final reduction removal
• Special tools must be used for crankshaft and crankcase assembly. When separating the
crankcase, the bearing will remain in the crankcase and it should be removed. When, assembling,
drive a new bearing into the crankcase and install a new oil seal.
SPECIFICATIONS
SUPER8 50 2T
Item
Standard (mm) Service Limit (mm)
Connecting rod big end side
clearance
⎯ 0.60
Connectin
g
rod bi
g
end radial
clearance
⎯ 0.04
Crankshaft runout A/B
⎯ 0.15/0.10
SPECIAL TOOLS
Crankcase puller Bearing outer driver handle A
Universal bearing puller Bearing outer driver, 42x47mm
Crankcase assembly collar Bearing driver pilot, 20mm
Crankcase assembly tool Bearing outer driver, 37x40mm
Bearing driver pilot, 17mm
TROUBLESHOOTING
Abnormal engine noise
• Excessive crank journal bearing play
• Excessive crankpin bearing play
• Excessive transmission bearing play

KYMCO SUPER8 50 2T Specifications

General

Engine Type	2-stroke, single cylinder
Fuel System	Carburetor
Transmission	CVT automatic
Front Suspension	Telescopic fork
Rear Suspension	Single Shock
Front Brake	Disc
Rear Brake	Drum
Front Tire	120/70-12
Rear Tire	130/70-12
Seat Height	780 mm
Ignition	CDI
Starter	Electric & Kick
Width	700 mm
Cooling System	Air-cooled