Before Troubleshooting - Honda GX690 Workshop Manual

TROUBLESHOOTING

BEFORE TROUBLESHOOTING

TROUBLESHOOTING
• Use a known-good battery for troubleshooting.
• Check that the connectors are connected securely.
• Check the 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
GENERAL SYMPTOMS AND POSSIBLE CAUSES
Hard starting.
Engine lacks power.
4-2
ENGINE OIL level low (oil alert system
applicable types).
Inspect: page 3-3
FUEL FILTER clogged.
Clean: page 3-10
IGNITION COIL faulty.
Replace: page 9-4
SPARK PLUGS faulty
Inspect: page 3-6
AIR FILTER restricted.
Clean: page 3-5
SPARK ARRESTER restricted (applicable
types).
Clean: page 3-7
CARBURETOR problem.
Readjust: page 3-8
Disassemble/inspect: page 6-6 through 8
GOVERNOR out of adjustment.
Readjust: page 7-3, 7-6
VALVE CLEARANCE incorrect.
Readjust: page 3-8
VALVE or VALVE SEATS worn or damaged
Inspect: page 14-7
Correct: page 14-13
CYLINDER, PISTON or PISTON RING
worn
Disassembly: page 14-2, 5, 6
Inspect: page 14-7, 14-10 through 12
Poor performance at high
speed.
Engine will not rev
sufficiently.
Poor performance at low
speed.