4. Maintenance
USE AND MAINTENANCE MANUAL
CHAPTER 4
MAINTENANCE
4-Strokes - Edition 00 / 2022
110
3
4
8
7
1
5
6
2
E
E
E
C
D
1
– Apply molybdenum disulphide grease to the sliding
surfaces of the camshafts;
– Apply the engine oil on the decompression system.
– Fill the cylinder head with engine oil up to the tops “E” of
the valve lifters.
– Install the intake and exhaust camshafts in the head.
– Install the timing chain “1” on the sprockets of both
camshafts. Make sure that the notch “C” of the exhaust
camshaft and the notch “D” of the intake camshaft are
aligned with the head plane.
When installing the camshafts and timing the
engine, do not rotate the crankshaft. Damage and/or
incorrect engine timing may occur.
– Install the camshaft bearing guides and camshaft supports;
– Apply engine oil to the threads and contact surfaces of the
camshaft support bolts, install them and tighten them to
the specified torque. Perform the tightening operation in
two/three steps, following the diagram shown in the figure.
The bolts of the camshaft supports must be tightened
evenly to prevent damage to the camshaft head or
camshaft supports.
Camshaft support bolt:
10 Nm (1.0 m•kg 7.4 ft•lb)
– Install the timing chain tensioner, operating as described
below;
– Press the tensioner rod with your fingers at the same time,
using a flat, thin-blade screwdriver, turn the rod clockwise
until it is in the fully closed position.
