PIAGGIO MP3 400 i.e. User Manual

TO AVOID SCORING THE CONTACT SURFACE, DO NOT KEEP ROTATING THE VALVE WHEN
NO LAPPING COMPOUND IS LEFT. CAREFULLY WASH THE CYLINDER HEAD AND THE
VALVES WITH A SUITABLE PRODUCT FOR THE TYPE OF LAPPING COMPOUND BEING USED.
CAUTION
DO NOT REVERSE THE FITTING POSITIONS OF THE VALVES (RIGHT - LEFT).
Inspecting the springs and half-cones
- Check that the upper and lower supporting spring
washers, the cotters and the oil seal show exhibit
no signs of abnormal wear. Replace a component
when worn.
- Measure the unloaded spring length.
Characteristic
Standard length:
44.4 mm
Admissible limit after use:
42.4 mm
Refitting the valves
- Place the valve spring support washers on the
head.
- Alternately insert the 4 oil guards using the spe-
cial tool.
- Lubricate the oil guards and the valve guides.
Specific tooling
020306Y Punch for assembling valve seal
rings
Engine MP3 400 i.e.
ENG - 66

PIAGGIO MP3 400 i.e. Specifications

General

Brand	PIAGGIO
Model	MP3 400 i.e.
Category	Scooter
Language	English