TOP perfomances 9928300 Mode D'emploi page 17

• Refi t the spark plug and restore the distance between electrodes
(0.5 ↔ 0.6 mm) or replace it with one of required or equivalent
type. Tightening torque 10 Nm.
4V: NGK ER9EH-GN
3V EU3: NGK CR9EB
3V EU4: NGK MR9BI-8
• It is recommended to replace the engine oil.
• Reassemble the engine on the vehicle following the disassembly
procedure in reverse order.
– The base and head gaskets can not be used again, thus every
time you disassemble the cylinder this must be reassembled with
new gaskets.
Running-in is very important because it allows to all the new parts
to gradually settle. Failure to follow the rules set for the running-in
period could cause damages or strange deformations that would lead
to a loss of power or likely seizure. We therefore recommend to avoid
using the vehicle at its maximum power for the fi rst 500 km.
Part no.
9925490
9925491
9925550
9925551
9928280
9926820
IMPORTANT NOTES
RUNNING-IN
SPARE PARTS
Complete piston Ø 49
Complete piston Ø 49.5
Set of piston rings Ø 49
Set of piston rings Ø 49.5
Set of gaskets GT Ø 49 Piaggio 4T-3V/4V
Piston pin + rings
17
Description