TROUBLE SHOOTING
Poor performance of the engine and/or trimming mechanism can normally be prevented by carefully following instructions.
Poor performances can easily be corrected even by a beginner.
When the engine does not function properly check the following three (3) points first.
∙Is 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 TROUBLE SHOOTING refer to tables 1 and 2. Locate the problem on the following charts and repair as necessary.
Table 1
to start) |
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| tank |
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Engine does not start (or, is difficult |
| Engine cranks |
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| Fuei is reaching cylinder |
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| Fuel is reaching carburetor |
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| There is spark at high tension cord end |
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| spark at plug | procedures | |||||
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| Starting |
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Fuel is not reaching carburetor
Fuel is not reaching cylinder
No spark at high tension cord end
No spark at plug
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| running |
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| low speed |
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| function |
correct |
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| Carburetor |
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| overflow |
Engine does not crank
Fuel strainer clogged
Fuel pipe clogged
Suction insufficient
Strainer clogged
Carburetor out of order
C.D.I. module defective
Ignition coil defective
Wire connection defective
Switch is grounded
Insulator cracked
Spark gap incorrect
Covered with carbon
Fouled with fuel
Starting procedures incorrect
Low and high speed needle setting too lean
Metering lever spring too strong
Fuel pump diaphram defective
Fuel passage clogged with dust
Fuel leaking from fixing surfaces of carburetor
Air valve, fuel tank cap does not work normally
Fuel pump does not operate
Fuel inlet needle valve clogged with dust
Metering lever spring not placed in dent of lever
Muffler sticky with fuel
Bearing damaged
Piston and/or cylinder seized
Crankshaft worn
Crankshaft contacting crankcase
Clean.
Clean.
Make sufficient.
Clean.
Disassemble and check.
Remove and replace.
Remove and replace.
Reconnect.
Repair as necessary.
Switch on.
Replace plug.
Adjust.
Clean or replace.
Clean or replace.
Start correctly.
Readjust.
Readjust
Replace.
Disassemble and clean.
Retighten all screws.
Replace or clean.
Check impulse drilling.
Clean.
Correct.
This is because fuel mixture is too rich.
Start the engine several times with choke shutter fully open and run at fast idle until engine does not smoke.
Disassemble and replace.
Disassemble and replace.
Disassemble and replace.
Disassemble and replace.
- 19 -