Timing System Components Assembly - VESPA GT 125 Workshop Manual

Engine
Set the tensioner cursor to the rest position.
- Fit the chain tensioner on the cylinder, using a
new gasket, and tight the two screws to the pre-
scribed torque.
Insert the chain tensioning screw, together with the
spring and washer, tightening it to the prescribed
torque.
Locking torques (N*m)
Tensioner screws
11 ÷ 13
Nm
Adjust valve clearance
- Fit the spark plug.
Electrode distance 0.8 mm
Locking torques (N*m)
Spark plug 12 ÷ 14
Refit the cylinder head cover, tightening the 5 screws to the prescribed torque. Make sure the gasket
is positioned properly.
Remove the flywheel cover completely as already described in the flywheel chapter.
- Reassemble the oil pump control, the chain compartment cover, the by-pass and the oil sump as
described in the lubrication chapter.
- Reassemble the driving pulley, the belt and the transmission cover as described in the transmission
chapter.
Locking torques (N*m)
Tappet cover screws 6 - 7 Nm
Tappet cover screws
Spark plug
Tensioner cover
Tensioner screws
Limiting bell screw
Counterweight screw
Plate screws
Slider screw
ENG - 148
Tensioner cover
5 ÷ 6

TIMING SYSTEM COMPONENTS ASSEMBLY

Name
Vespa GT 125-200
Torque in Nm
6 - 7 Nm
12 ÷ 14
5 ÷ 6 Nm
11 ÷ 13
11 ÷ 15 Nm
7 ÷ 8.5
4 ÷ 6 Nm
10 ÷ 14 Nm