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38 – English
Repair instructions
Assembly
Maintain a high level of cleanliness when assem-
bling the carburettor. The slightest contamination
can result in running problems.
1. If the throttle and choke valves, together with
levers and springs were removed, they should
be retted. The spring is tensioned 1-2 turns.
Lubricate the shaft bearings with light oil.
2. Fit the high (V) and low (W) speed needles and
springs. Note! Do not fully tighten the screws.
This will damage the seats and needle tips.
3. Fit the fuel lter (U) by using the handle of a
small screwdriver. (see gure 33)
4. Fit pump cover (G), gasket (S) and measuring
chamber cover (R) over the pump unit (see
gure 33).
5. Fit the needle valve (L) with lever (M), shaft (N)
and spring (P) and tighten the screw (K). Fit
the expansion washer (F) (see gure 35).
6. Check using a ruler or the like that the lever
is level with the assembly plane on the cover.
The lever arm can be bent if necessary (see
gure 36).
7. Fit the control diaphragm (T) with gasket (S)
and measuring chamber cover (R) over the
metering unit (see gure 37).
8. Press in the screen (U). Fit the measuring
chamber cover (R) and tighten the screw (Q)
(see gure 37).
9. Put together the gasket (J) and control dia-
phragm (H) and press up (see gure 37).
10. Assemble all the parts and tighten the four
screws (see gure 37).
11.. Carry out a pressure test.
Fig 35
Fig 36
Fig 37