English
Troubleshooting
Poor performance of the engine and/or cutting mechanism can normally be prevented by carefully following these instructions.
Poor performance can easily be corrected even by a beginner.
When the engine does not function properly check the following three (3) points first.
■■Is the engine compression adequate?
■■Is fuel system in good condition and is enough fuel being supplied?
■■Is electrical system in good condition and is spark plug operating normally?
When there is serious trouble with the unit, do not try to repair it yourself but have your distributor or dealer do it for you. For detailed TROUBLESHOOTING refer to tables 1 and 2. Locate the problem on the following charts and repair as necessary.
Table 1
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does not start (or, is difficult to start) |
| Engine cranks |
| There is fuel in the tank |
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| Fuel is reaching carburetor |
| Fuel is reaching cylinder | high | |||||||
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Engine |
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| cord |
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| end |
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| at |
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| spark |
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| There is tension |
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Fuel is not reaching carbuerator
Fuel is not reaching cylinder
No spark at high tension cord end
No spark at plug
at plug |
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| Fuel does not | ||
There is spark |
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procedurescorrect |
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| keep running | ||||
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| Acceleration and | ||
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| low speed func- | ||
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| tion defective | ||
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| Starting |
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| Carburetor | ||
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| overflow | ||
Engine does not crank
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| Fuel strainer clogged | Clean. |
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| Fuel pipe clogged | Clean. |
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| Suction insufficient | Make sufficient. |
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| Strainer clogged | Clean. |
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| Carburetor out of order | Disassemble and check. |
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| C.D.I. module defective | Remove and replace. |
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| Ignition coil defective | Remove and replace. |
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| Wire connection defective | Reconnect. |
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| Repair as necessary. | |
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| Switch is grounded | Switch on. |
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| Insulator cracked | Replace plug. |
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| Spark gap incorrect | Adjust. |
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| Covered with carbon | Clean or replace. |
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| Fouled with fuel | Clean or replace. |
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| Starting procedures incorrect | Start correctly. | |||
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| Low and high speed needle setting too lean | Readjust. | |||
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| Metering lever spring too strong | Readjust. |
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| Fuel pump diaphragm defective | Replace. |
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| Fuel passage clogged with dust | Disassemble and clean. |
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| Fuel leaking from fixing surfaces of carburetor | Retighten all screws. | |
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| Air valve, fuel tank cap does not work normally | Replace or Clean. |
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| Fuel pump does not operate | Check impulse drilling. |
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| Fuel inlet needle clogged with dust | Clean. | |||
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| Metering spring not placed in dent of lever | Correct. | ||||
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| Muffler sticky with fuel | Fuel mixture is too rich |
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| Bearing damaged | Disassemble and replace. | |
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| Piston and/or cylinder deized | Disassemble and replace. | |
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| Crankshaft worn | Disassemble and replace. | |
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| Crankshaft contacting crankcase | Disassemble and replace. | |
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26
