Honda GXR120T Manual page 34

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ENGINE SPEED DOES NOT INCREASE OR STABILIZE
Check the air cleaner element (page 3-5).
Clean
Check the spark plug (page 3-6).
Normal
Check the main jet for blockage (page 6-6, 6-7).
Clear
Check for secondary air leak.
No air leaking
Check the valve clearance (page 3-8).
Normal
Check the cylinder compression (page 13-9).
Normal
Check that the governor system is installed
correctly (page 7-2, 7-4).
Normal
Check the ignition coil air gap (page 9-4).
Normal
Check the ignition coil (page 9-5).
Replace the ignition coil if abnormalities are found,
and recheck.
Clogged
Clean the air cleaner element (page 3-5).
Abnormal
Inspect the spark plug and adjust the spark plug
gap. Replace if necessary (page 3-6).
Clogged
Disassemble and clean the carburetor (page 6-6,
6-8).
Air leaking
Check around the air intake joint and carburetor;
replace the insulator and/or gasket if necessary.
Abnormal
Adjust the valve clearance (page 3-9).
Compression
is too high
Check for carbon deposits in the combustion
chamber (page 3-8).
Compression
Check for defective valves or valve seats (page
is too Low
13-9, 13-10).
Check for worn piston, piston rings, or cylinder
inner surface (page 14-9, 14-11).
Abnormal
Adjust or replace the faulty part(s).
Abnormal
Adjust the ignition coil air gap (page 9-4).
TROUBLESHOOTING
4-3