3
100
E
N
G
IN
E ASS
E
M
B
LY AN
D CO
NTRO
LS
2
1
A
3
10Nm
3.15
CHECKING AND CoUPLING
of tIMING CHAIN, fIXED
AND MoBILE GUIDES
The chain has the task of transmitting motion from the
crankshaft to the camshafts present on the cylinder head.
The links must be checked to make sure there is no
excessive radial or axial play between them.
The fixed and movable guides guarantee a correct move
-
ment of the chain. The hydraulic chain tensioner ensures
correct tensioning.
Make sure that the guides do not have deep traces cau
-
sed by the rotation of the chain.
In order to assemble the chain to the engine, just intro
-
duce it in the vertical passage compartment A on the left
crankcase and insert it in the gear on the crankshaft.
Insert the fixed guide
1
and the movable guide
2
inside
the compartment
A
. Insert the specific 6.2x9x9 bushes
inside the lower eyelets of the guides. After having ap
-
plied medium strength threadlocker, tighten the relative
screws
3
at a torque of 10Nm.
3.16
IGNItIoN SYStEM
Before reassembling the ignition system, it is recommen
-
ded to check its correct functioning.
The ignition system is made up of the magnetic pick-up,
the stator unit and the flywheel. The system is completed
by the electronic control unit, the ignition coil and the
spark plug, which are not dealt with in this text.
Timing chain with relative fixed and movable guides.
Mounting bushes in lower eyelets of guides.