Read 5950_carburetor check sheet gx100 rammer ENG.indd text version

Carburetor Check Sheet

GX100 RAMMER

5 7 8 9

FUEL

COMBUSTION ELEMENTS

Priority check Points :

COMPRESSION

IGNITION

10

If the engine will not start, before inspecting the fuel system, check that the engine has sufficient compression and a strong spark.

9

2 8 7

Carburetor identification

4 5 6

3

1

Inspection point

Fuel filter

2

Primer pump

3

Combination valve

4

Main jet

5

Metering lever

6

Inlet needle valve

7

Fuel inlet filter

8

Pump diaphragm

9

Metering diaphragm

10

Throttle stop screw

Attention! If torx screw: don't touch adjust speed at control plate

Caution Point

The pump and metering diaphragms are made of rubber. Rubber deteriorates over time, so check and replace these parts if necessary.

Do not apply high air pressure to plastic and rubber parts.

If applicable + 0.25 mm (+0.010 in) valve metering lever

LOW IDLE SPEED SETTING

- 0.13 mm (-0.005 in) carburetor body Check for cracks Check for cracks ( Use needle B 0.3) to clean valve seat

Check for cracks, holes, tears and general perishing of the rubber parts.

Clean or replace Check for damage Check for damage Adjust idle speed at control base 1850 ± 150 rpm

Clean with a soft brush.

Replace OK Check for wear of valve and valve seat

Warning

Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel. Before removal, completely drain the fuel line. · Keep heat, sparks, and flame away. · Handle fuel only outdoors. · Wipe up spills immediately. · Always close fuel cock.

Hard to prime with primer pump Engine does not start Idle speed is not stable High speed is not stable Engine does not accelerate Overflow

If the engine will be stored, or not used for more than 1 month, drain the fuel to prevent hard starting.

· Do not use old fuel · Fuel deteriorates quickly · Old fuel makes engines very difficult to start · Always use fresh fuel

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5950_carburetor check sheet gx100 rammer ENG.indd

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