Troubleshooting - Husqvarna K1270 Workshop Manual

22. TROUBLESHOOTING

22.1. ENGINE DOES NOT START
Remove the spark plug from the cylinder, and holding the cylinder, pull the recoil starter and check
whether any sparks appear between the spark plug electrodes.
Symptom/Category
There are no sparks at the spark plug
Spark plug
Magneto
Switch
There are sparks at the spark plug
Compression is
good and fuel flows
Fuel flows, but
compression is poor
No fuel flows
Cause
1. The spark plug electrodes are wet
2. Carbon has built up on the spark plug
electrodes
3. Insulation is poor due to cracks, etc. on
the spark plug insulator
4. The gap between the spark plug elec-
trodes is excessively small or large
1. Poor coil insulation
2. The cable trunking has been damaged or
the cable is broken
3. Poor air gap between the rotor and coil
4. Damage to the plug and gap spring
1. The switch is OFF
2. The switch is faulty
3. The primary wire is earthed
1. Excessive fuel intake
2. Too rich adjusted carburettor
3. Overflow
4. The air filter is too dirty
5. Poor quality fuel is being used
1. The spark plug is loose
2. Wear or damage to the cylinder, piston
3. Gas is leaking from around the cylinder
and crankcase
1. Poor carburettor adjustment
2. Blockage inside the carburettor
3. Blockage in the fuel filter
4. Fuel hose damage or blockage
Troubleshooting
Action
Dry them
Remove the carbon or replace
with a new one
Replace with a new one
Champion RCJ 6Y/NGK BPMR 7A:
Adjust to 0.5 mm
Replace
Repair or replace
Adjust to 0.3 mm
Replace
Set the switch to the left position
Replace
Repair or replace
Discharge the excess gas
Repair, adjust or replace the
carburettor
Adjust or replace the carburettor
Replace the air filter
Replace with good quality fuel
Tighten
Replace
Replace gasket with new one and
re-assemble
Adjust
Clean
Clean or replace the fuel filter
Adjust
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