Fault location
Fault | System |
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Engine not starting or with | Ignition system |
| Ignition spark O.K. |
| Fault in fuel supply or compression system, mechanical | ||||||||
difficulty |
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| No ignition spark |
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| or connector defective, ignition module faulty |
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| Fuel supply |
| Fuel tank filled |
| Incorrect choke position, carburetor defective, fuel supply line | ||||||||
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| bent or blocked, fuel dirty. |
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| Compression |
| No compression when | Cylinder bottom gasket defective, crankshaft seals damaged, | |||||||||
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| pulled over |
| cylinder or piston rings defective or improper sealing of spark | |||||||
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| Mechanical fault |
| Starter not engaging |
| Broken starter spring, broken parts inside of the engine | ||||||||
Warm start problems |
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| Tank filled ignition spark | Carburetor contaminated, have it cleaned |
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Engine starts but dies | Fuel supply |
| Tank filled |
| Incorrect idling adjustment, carburetor contaminated | ||||||||
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| Fuel tank vent defective, fuel supply line interrupted, cable or | |||||
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Insufficient performance | Several systems |
| Engine idling poor |
| Air filter contaminated, carburetor contaminated, muffler | ||||||||
| may simultaneously |
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| clogged, exhaust duct in the cylinder clogged |
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Operating time |
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| Before | After |
| Daily |
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| Shutdown/ |
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| 30h | 50h | 200h | ||||||
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| operation | lubrication |
| (10h) |
| rest | nding P | ||||
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| Inspect/clean |
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Engine oil |
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Replace |
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Tightening parts | Inspect |
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(bolt, nut) |
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| Clean/inspect |
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Fuel tank |
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Drain fuel |
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Throttle lever | Check function |
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Stop switch | Check function |
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| 12 | |
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Inspect/adjust |
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Air cleaner | Clean |
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Ignition plug | Inspect |
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Cooling air duct | Clean/inspect |
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| Inspect |
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Fuel pipe |
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Replace |
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Fuel filter | Clean/replace |
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Clearance between air intake | Adjust |
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valve and air discharge valve |
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Oil tube | Inspect |
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Engine overhaul |
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Carburetor | Drain fuel |
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| *3 | 17 |
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*1 Perform initial replacement after 20h operation.
*2 For the 200 operating hour inspection, request Authorized Service Agent or a machine shop. *3 After emptying the fuel tank, continue to run the engine and drain fuel in the carburetor.
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