PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 280 / 892

KEY:
E = Exhaust
Valve manual grinding
1. Grind valves and valve seats manually, with a lapping compound.
2. Once grinding has finished, clean the valves and valve seats.
N.B.
BE CAREFUL NOT TO PUT THE LAPPING COMPOUND IN THE VALVE GUIDES.
Fitting new valves
When the valve seats are reworked, fit the new valves.
Measure the distance between the cylinder head attachment surface (head-cylinder gasket position
surface) and the upper part of the valve.
Make sure that this distance does not exceed the following maximum limits.
Characteristic
Inlet valve maximum limit:
2.775 mm
Exhaust valve maximum limit:
6.026 mm
If the value is higher than the maximum limit al-
lowed, replace the head.
Montaggio testa
HEAD FITTING
N.B.
Engine
PORTER 1.3 16V
EN - 280