BAR AND CHAIN COMBINATIONS
Chain specifications: .325 in. pitch, .05 in. chain gauge, 72 drive links |
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Length of Bar | Guide Bar Part Number | Chain Part Number |
18 in. | 308626001 | 900920007 |
TROUBLESHOOTING
Problem | Possible Cause |
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Engine will not start. | No spark. |
| Check spark. Remove air filter cover. Remove spark plug from | |
[Make sure ignition |
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| cylinder. Reattach the spark plug wire and lay spark plug on top | |
switch is in the RUN |
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| of cylinder with the metal part of plug touching the cylinder. Pull | |
( l ) position.] |
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| the starter rope and watch for spark at spark plug tip. If there is no | |
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| spark, repeat test with a new spark plug. | |
| Engine is flooded. | With the ignition switch OFF, remove spark plug. Move choke | ||
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| lever to RUN position (pushed in completely) and pull starter cord | |
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| 15 to 20 times. This will clear excess fuel from engine. Clean and | |
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| reinstall spark plug. Set ignition switch to RUN ( l ) position. Push | |
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| and fully release primer bulb 7 times. Pull starter three times with | |
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| choke lever at RUN. If engine does not start, move choke lever to | |
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| HALF CHOKE and repeat normal starting procedure. If engine still | |
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| fails to start, repeat procedure with a new spark plug. | |
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Engine starts but will | Carburetor requires “L” | Contact an authorized service center for carburetor adjustment. | ||
not accelerate prop- | (Low Jet) adjustment. |
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erly. |
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Engine starts, then | Carburetor requires “L” | Contact an authorized service center for carburetor adjustment. | ||
dies. | (Low Jet) adjustment. |
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Engine starts but will | Carburetor requires “H” | Contact an authorized service center for carburetor adjustment. | ||
not run properly at | (High Jet) adjustment. |
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high speed. |
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Engine does not reach | Oil/fuel mixture incorrect. | Use fresh fuel and the correct | ||
full speed and/or emits | Air filter is dirty. |
| Clean air filter. Refer to Cleaning the Air Filter in the Maintenance | |
excessive smoke. |
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| section of this manual. | ||
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| Spark arrestor screen is | Clean spark arrestor screen. Refer to Cleaning the Spark Arresting | ||
| dirty. |
| Muffler in the Maintenance section of this manual. | |
| Carburetor requires “H” | Contact an authorized service center for carburetor adjustment. | ||
| (High Jet) adjustment. |
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Engine starts, runs, | C a r b u re t o r | re q u i re s | Turn idle speed screw “T” clockwise to increase idle speed. | |
and accelerates but | adjustment to idle speed. | Refer to Adjusting the Carburetor in the Maintenance section of | ||
will not idle. |
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| this manual. | |
Chain turns at idle. | C a r b u re t o r | re q u i re s | Turn idle speed screw “T” counterclockwise to decrease speed. | |
| adjustment to idle speed. | Refer to Adjusting the Carburetor in the Maintenance section of | ||
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| this manual. | |
| Air leak in the intake | Contact an authorized service center for a rebuild kit. | ||
| system. |
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| Page 32 |
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