20
WORKSHOP MANUAL
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Set the gear shift gate in one of the centre positions
(extreme positions are unsuitable). Then fit the
mainshaft with the spacer and gear locked in the
position with wireformed ring into the bearing in the
left crankcase half. Fit the 16 tooth gear on the shaft
splines with its three claws pointing downward.
Put shifter fork guide pins into the top and the
bottom slots of the gate and fit the top fork into the 16
tooth gear on the mainshaft at the same time. Then
thread the guide rod through the forks so that its
shouldered end points downward. Locate the 24 tooth
gear with its flat side toward the needle bearing, and
place the 16 tooth gear on the bottom shifter fork with
its three claws pointing upward. Join both gears by the
layshaft with the previously fitted on and secured 19
tooth gear. Check gear shifting by turning the gear
shift gate to the individual positions corresponding to
the individual speeds (especialy if a new gear shift
gate is used) in the following manner.
a)
Shift the 1
st
. gear and check whether the
16 tooth gear on the layshaft meshing with
the 1
st
speed gear (24 teeth) has an axial
clearance of at least 0,2-0,3 mm. Likewise
check that, in this position, there is a
clearance between the shifter fork guide pins
and the end of the gate slots.
b)
Shift the neutral between 1
st
and 2
nd
gear
and check that the claws of the 16 tooth gear
do not touch the face of 1
st
speed gear and
also the claws of the 2
nd
speed (19 teeth)
gear when lifting in the bottom shifter fork.
c)
When shifting in fourth gear, the face of
splined mainshaft should protrude 0,1-0,2
mm from the 3
rd
speed gear (16 teeth). At
the same time check that the shifter fork
guide pins are not abutting against the ends
of the gate slots (see paragraph a).
