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Adjustment of chains
The chain of the engine is adjusted after loosening
the nut of rear axle (3 fig.16). By tightening the
nuts of chain tightener (2) on both sides of frame
tighten the chain so it has the clearance of abt.
10mm after the compression. After the adjustment
of chain check the trace of the wheels by means of
straight lath ond tighten thoroughly the nuts of the
axle. The chain of the pedals is adjusted by means
of tension pulley arranged on L. H. side of the
moped (fig. 17).
Fig. 16 Adjustment of rear brake and engine
chain
Fig. 17 Adjustment of chain of pedals
Fig. 18 Adjustment of decompressor
Decompressor adjustment
The decompressor is adjusted after loosening the
screw A (fig.18) on the decompressor lever. The
cable is loosened or pulled so the clearance of
bowden from the stop B is 1 - 1,5mm (fig.19).
Tighten the screw after adjustment of clearance of
cable.
The clearance of the cable must have the
prescribed value since at the tightened cable
the burning through of decompressor valve
would take place. The decompressor does not
function with the free cable.
Fig. 19 Checking the decompressor adjustment
Fig. 20 Carburettor
1. Saturator pin. 2. Mover
stop screw. 3. Regulating screw for richness of
idle run mixture.
Carburettor (Fig. 20)
When failure of carburettor we would like to
recommend you to apply to the service repair shop
which effects the repair, adjustment and cleaning
of the carburettor. The nozzles are to be cleaned
by the petrol and compressed air only. Jikov 2909
DC carburetor has the following equipment and
adjustment used for Babetta moped:
-
main
nozzle
63
-
idle run nozzle
35
-
mover needle adjusted on 2
nd
. Notch from
upward
-
regulation screw of mixture richness for idle
run loosened backwards througn 1½ rotation.
The stop screw of the mover is used for
adjustment of idle run r.p.m. The speed
increased by screwing in and decreased by
screwing out.
Fig. 21 Adjustment of carburettor
Page 6
Babetta type 28 owners handbook pages 31 to 36
jkw
