TOP Perfomance 9931170 Manual Del Usuario página 9

– Use a clean rag to protect the crankcase opening so as to prevent
foreign matter from accidentally entering. Carefully clean the mating
surface of cylinder with crankcase.
CYLINDER COVER MODIFICATION INSTRUCTIONS
TO FIT CONVERSION KIT
COVER VIEW FROM EXHAUST SIDE
CYLINDER AND PISTON ASSEMBLY
– Fit the roller cage in the con-rod small end after lubricating it with
plenty of fully synthetic mixer oil.
– Fit one of the two gudgeon pin circlips (6) on the piston (2), lubricate
the piston ring grooves and carefully fi t the piston rings (3 upper
and 4 lower). Where present, be careful to fi t the piston rings with
the inscription "TOP" towards the piston crown. Check that the
piston ring enters completely into its seat by pressing slightly with
the fi ngers to confi rm a correct assembly.
– Fit piston (2) ensuring that the arrow at the top points to the cylinder
exhaust port. Fit the lubricated gudgeon pin (5) from the side with
no circlip.
– Fit the second gudgeon pin circlip (6) and make sure that both are
correctly positioned in their seats, without any clearance between
them and their seats.
– Fit the cylinder base gasket (10).
– Lubricate the cylinder barrel (already washed and blown with air).
– Position the piston ring opening at the suitable retainers, push the piston
ring inside the grooves and carefully insert the lubricated cylinder fully
home on the base gasket.
– Manually turn the crankshaft two or three times (holding the cylinder
with your free hand) to ensure engine is correctly assembled).
Check that the piston does not interfere with any part of the engine
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MATERIAL TO BE REMOVED
9
Fig. 1