Starting Fuel Limiter
Inspection / Disassembly and reassembly
A5.05. 05.05.01.00
3750
M20-M601C
en / 30.05.2000 IB021410 2/3
05
Ĺ
1.4 Check whether full fuel is admitted within
15 seconds
after starting the engine. Adjust by throttle screw (Fig. 1/10).
2. Venting
2.1 Slip a transparent hose over vent screw (12) and put the other end into a an oil reservoir
arranged at a lower level. Turn the vent screw entirely in and then screw one turn back.
2.2 Remove plug (13), spring (14) and piston (15).
2.3 Fill oil in as far as 7 mm below the housing top edge (SAE 20).
2.4 Insert the piston. Drive the air out by screwing the plug in.
2.5 Proceed according to 2.3 and 2.4 until no air escapes any more. Unscrew the plug. Insert
the spring. Screw the plug in until it is flush with the housing top edge and secure it with
locking spring (16).
2.6 If the cylinder is of the older type, the air must be removed by the throttle screw.
3. Disassembly
3.1 Close the main air valve. Remove the air connection.
3.2 Remove the unit from the engine.
3.3 Measure and note down the position of throttle screw (10) and thrust screw (11).
3.4 Disassemble the unit entirely and clean it in spirit.
3.5 Inspect all parts.
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