'61HN252' by American Honda Motor Co. - Page 534 of 540
http://services.honda.com/ServiceManual/SVC_MNL/61HN253/61HN2...
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3/9/2008 11:33 PM
[2005-2008] [TRX500 FA/FGA]
TROUBLESHOOTING
7. Cylinder Compression Inspection
Test cylinder compression.
Is the compression low?
YES
·
Valve clearance too small
·
Valve stuck open
·
Worn cylinder and piston rings
·
Damaged cylinder head gasket
·
Seized valve
·
Improper valve timing
NO
GO TO STEP 8.
8. Carburetor Inspection
Check carburetor for clogging.
Is the carburetor clogged?
YES
Carburetor not serviced frequently enough
NO
GO TO STEP 9.
9. Engine Oil Inspection
Check oil level and condition.
Is there correct level and good condition?
NO
· Oil level too high
· Oil level too low
· Contaminated oil
YES
GO TO STEP 10.
10. lubrication Inspection
Remove cylinder head cover and inspect lubrication.
Is the valve train lubricated properly?
NO
· Clogged oil passage
· Clogged oil orifice
YES
GO TO STEP 11.
11. Over Heating Inspection
check for engine over heating.
Is the engine over heating?
NO
·
Coolant level too low
·
Fan motor not working (Faulty ECM)
·
Thermostat stack closed
·
Excessive carbon build up in combustion chamber
·
Use of poor quality fuel
·
Lean fuel mixture
·
Wrong type of fuel
YES
Faulty automatic transmission system
26-4