Bore
Stroke
Displacement
Compression ratio
No. Q.ty Description
1
1
Ø 49 cylinder in MINACROM cast iron
2
1
Piston Ø 49 with high silicon content
3
1
Set of 4T piston rings Ø 49
4
1
Piston gudgeon pin Ø 13
5
2
Piston gudgeon pin circlips Ø 13
6
1
Head gasket
7
2
Cylinder base gasket, 0.4 mm thick
ASSEMBLY INSTRUCTIONS
ENGINE DISASSEMBLY
• Position the engine on a working bench and proceed as follows:
– Remove exhaust pipe.
– Disconnect carburettor and air fi lter box.
– Disconnect the electric system wiring from the engine including
the starter motor.
– Remove all screws and bolts that fi x the engine to the frame.
– Remove the rear brake cable of the wheel.
• Remove the original piston-cylinder assy as follows:
– Remove air conveyor and cooling fan.
– Remove the valve cover.
– Remove the cover that envelops the cylinder.
– Bring the engine to the top dead centre in the compression
phase.
SPECIFICATIONS
THE KIT CONSISTS OF:
11
49 mm
41.8 mm
78.78 cu. cm
12:1
engine
4V
3V iGET
engine
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1
2