Preliminary Operations - TOP perfomances 9931110 Manual De Instrucciones

BORE
DISPLACEMENT = 49,2 cc.
No. Q.ty Description
1) 1 Cylinder Ø 40 mm in "MINACROM" cast iron (with chrome
added to the alloy)
2) 1 High silicon content piston Ø 40 mm with "Molybdenum
Disulphide" surface treatment
3) 1 Chromed top piston ring Ø 40 mm
4) 1 Lower piston ring Ø 40 mm
5) 1 Piston gudgeon pin Ø 10 x 33
6) 2 Gudgeon pin circlips
7) 1 Head
8) 1 Head external O-Ring
9) 1 Head internal O-Ring
10) 1 Cylinder base gasket

PRELIMINARY OPERATIONS

– Carefully wash the vehicle, especially the engine part installation
area.
– Remove muffl er, spark plug, cooling circuit pipes and water
temperature sensor if present.
– Loosen the head nuts. Carefully remove head, cylinder and piston.
– Check connecting rods. If not in good condition, we would recommend
to replace it with a new one.
– Carefully check that inside the new cylinder (1) there is no foreign
matter. With a scraper, bevel all transfer ports on the cylinder barrel.
Wash it with suitable solvent and blow with air.
– Wash with suitable solvent and blow all parts in the kit to eliminate
any possible machining residues.
SPECIFICATIONS
= 40 mm
THE KIT CONSISTS OF:
ASSEMBLY INSTRUCTIONS
STROKE
Compr. Ratio = 1 : 13
8
= 39,2 mm