Honda GX270H Manual page 57

62Z7B000.book 2 ページ ２０１２年９月２７日 木曜日 午前１０時２１分
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TROUBLESHOOTING
BEFORE TROUBLESHOOTING
TROUBLESHOOTING
• Use a known-good battery for troubleshooting.
• Check that the connectors are connected securely.
• Check for sufficient fresh fuel in the fuel tank.
• Read the circuit tester's operation instructions carefully, and observe the instructions during inspection.
• Disconnect the battery cable before continuity inspection.
TROUBLESHOOTING
HARD STARTING
• Check the engine oil level before troubleshooting.
Without starter motor:
Pull the recoil starter and check whether the
engine cranks.
Cranks
With starter motor:
Turn the combination switch to the START
position and check whether the engine
cranks.
Cranks
Loosen the carburetor drain screw, and
check the fuel flow from the fuel tank.
Flows
Check the spark plug (page 3-9).
Normal
Perform the spark test (page 9-5).
Spark
Go to page 4-3
4-2
Cannot be cranked Check the recoil starter (page 10-8).
- If the recoil starter operates correctly when
removed but is hard to pull when installed on
the engine, check the decompressor
operation of the camshaft (page 14-20).
- If the recoil starter operates correctly when
removed but cannot be pulled when installed
on the engine, disassemble the engine and
repair or replace the faulty part(s) (page 14-6).
Perform the STARTING SYSTEM
Does not crank
TROUBLESHOOTING (page 10-2).
Does not flow
Check for clogged fuel filter, fuel tube, and
fuel strainer screen (page 6-3).
Dry
Disassemble the carburetor to clean the
carburetor ports, jets, and nozzles (page 6-
15).
If spark plug is correct, clean and dry the
Wet
electrodes, and then restart the engine,
taking care that the choke valve is not closed
too much.
If the engine does not start and the electrode
are wet again, check the carburetor float
valve (page 6-16).
No spark
Perform the IGNITION SYSTEM
TROUBLESHOOTING (page 9-3).