PIAGGIO PORTER 1.3 16V 2008 User Manual

Checking clearance between the valve guide
and the valve stem
1. Ream the valve guide bushing to remove any
burrs.
THIS REAMING MUST BE CARRIED OUT ONLY TO RE-
MOVE ANY BURRS.
2. With a plug gauge, measure the valve guide in-
side diameter at six points. Record the values
measured.
3. With a micrometer, measure the valve stem diameter at six points.
Record the values measured.
4. Clearance calculation
Calculate clearance of each single valve according to the following formula.
Guide inside diameter -
Valve stem outside diameter =
Coupling clearance
Characteristic
Inlet valve Clearance specification values:
0.020 - 0.055 mm
Exhaust valve Clearance specification values:
0.025 - 0.060 mm
Inlet valve allowed limits:
0.080 mm
Exhaust valve allowed limits:
0.090 mm
PORTER 1.3 16V Engine
EN - 273

PIAGGIO PORTER 1.3 16V 2008 Specifications

General

Brand	PIAGGIO
Model	PORTER 1.3 16V 2008
Category	Automobile
Language	English