Shibaura FK500-A, Owner'S Manual

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6. Troubleshooting
For preventing the fire pump from troubles, routine checkup and maintenance are
important. Let us locate any trouble at an early stage and remedy it immediately.
For a trouble which is not easy to remove or not mentioned below, contact the sales
agent specifying the model and serial number.
1. Engine area
Symptom Cause Remedy
Hard
to
s
ta
rt
Fuel does not flow
to carburetor 1. Fuel filter or pipe is clogged
2. Needle valve sticks
3. Short of fuel 1. Clean
2. Ditto
3. Refill
Fuel does not flow
to combustion
chamber (check
upon removing
spark plug) 1. Choke does not close (auto choke)
2. Cranking speed is low (battery
provided)
3. Carburetor (needle valve, jet) is
clogged
1. Repair or adjust
2. Recharge battery
3. Clean
Fuel flows to
combustion
chamber but engine
does not start 1. Overflow (excessive fuel)
2. Tickler is abused (excessive fuel)
3. Choke is closed all the way (auto
choke)
4. Fuel is not volatile (old)
5. Fuel is mixed with moisture
6. Lubricating oil is excessive
1. Check and adjust
carburetor
2. Discharge oil upon
removing
crankcase seal
plug
3. Replace
diaphragm or
clean pipe
4. Replace
5. Eliminate moisture
6. Adjust properly
Fuel system is
abnormal 1. Fuel filter is clogged
2. Carburetor valve seat is clogged
3. Improperly adjusted or clogged
carburetor slow system
4. Carburetor is not tightened securely
1. Clean
2. Ditto
3. Adjust or clean
4. Retighten
Sparks are poor 1. Ignition plug is broken or
contaminated, or gap is improper
2. Leakage from high voltage cord
3. Leakage from plug cap
4. Ignition coil is faulty
5. CDI unit is faulty
6. Starting motor does not rotate
properly
1. Replace plug or
adjust its gap
2. Replace
3. Ditto
4. Ditto
5. Ditto
6. Recharge battery