Ensure that drain hole A is facing upwards.
– Insert the camshaft in the cylinder head so that marks B on
the camshaft gear are aligned with the upper edge of the cylin-
der (see figure). The automatic decompressor stop screw
must be positioned at the top.
Before fitting the camshaft, lock the crankshaft at the top
dead centre using the crankshaft fixing screw.
– Fit the timing chain on the camshaft gear and then fit a new
chain joint 1.
– First fit the insert of the special tool as shown in the figure and
then press the chain joint.
– Fit the insert of the special tool as shown in the figure and riv-
et the chain joint.
The nailing of the chain coupling should be so strong that
the cross section of the coupling piece ends is trapezoidal
in shape (see sketch).
64
Workshop manual RR 4T - 400 - 450 - 525
A
B
B
1
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