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Checking the rocker clearance - 750
Before fitting the regular pin, check the
the rockers with a feeler gauge.
The clearance for the inlet valve should be
10 mm and 15 mm for the exhaust valve. If
the clearance is not correct, install the
correct size shim to achieve the correct
clearance. After this has been done, fit the
normal rocker pin.
The head and valve group
This figure shows the various components
of this group, which are fitted in the
The brass washer.
The lower plate.
The oil seal rubber.
The upper plate.
The two half-cones.
When assembling this group, special tool
# 88713.0102 should be used.
The brass washer has been fitted on the
first 50 engines only, i.e. no. 750.001 to
The horizontal head and the rocker group
This figu re shows the horizontal head with
dismantled rockers, bushes, pins, shims
and adjusting caps.
To assemble fit the bushes in the rockers,
then check that pins enter without too
much end play, then fit the adjusting caps
with their counternuts.