HS81A CUT-OFF SAW — TROUBLESHOOTING (ENGINE)
TABLE 4. TROUBLESHOOTING (ENGINE, CONTINUED)
SYMPTOM | POSSIBLE CAUSE | SOLUTION | |
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| Air cleaner not clean? | Clean or replace air cleaner. | |
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| Check float adjustment. | |
"Weak in power" compression is proper | Improper fuel level in carburetor? |
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Rebuild carburetor. | |||
and does not misfire. |
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| Defective spark plug? | Clean or replace spark plug. | |
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| Improper spark plug gap? | Set to proper gap. | |
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| Water in fuel system? | Flush fuel system and replace | |
| with correct type fuel. | ||
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"Weak in power" compression is proper |
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Ignition coil defective? | Replace ignition coil. | ||
but misfires. | |||
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| Dirty spark plug? | Clean or replace spark plug. | |
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| Wrong fuel type? | Flush fuel system, and replace | |
| with correct type of fuel. | ||
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Engine overheats. | Spark plug heat value improper? | Replace with correct type of | |
| spark plug. | ||
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| Cooling fins dirty? | Clean cooling fins. | |
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| Governor adjusted correctly? | Adjust governor. | |
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Rotational speed fluctuates. | Governor spring defective or missing? | Replace governor spring. | |
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| Fuel flow restricted? | Check entire fuel system for | |
| leaks or clogs. | ||
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| Recoil mechanism clogged with dust and | Clean recoil assembly with soap | |
Recoil starter malfunction. | dirt? | and water. | |
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| Spiral spring loose? | Replace spiral spring. | |
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PAGE 28 — HS81A
