Honda HRG416C1 Manual page 30

ENGINE SPEED DOES NOT INCREASE OR STABILIZE
Check the air cleaner element (page 3-4*).
Normal
Check the valve clearance (page 3-5).
Normal
Check the spark plug (page 3-4).
Normal
Check the carburetor for any obstructions (page
5-7, 5-8).
Normal
Check for secondary air leak.
No leaking
Perform the cylinder compression test (page 10-
11).
Normal
Check that the governor system is installed
correctly (page 6-2).
Normal
Check the ignition coil air gap (page 15-5).
Normal
Check the ignition coil (page 15-5).
Replace the ignition coil if it is abnormal, and
recheck.
Clogged
Clean the air cleaner element (page 3-4*).
Abnormal
Adjust the valve clearance (page 3-6).
Abnormal
Clean the electrodes and adjust the plug gap.
Replace if necessary (page 3-4).
Clogged
Disassemble and clean the carburetor.
Leaking
Check around the air intake joint and carburetor;
replace the insulator and/or packing if necessary.
Compression
is too high
Check for carbon deposits in the combustion
chamber (page 3-7).
Check the valve clearance (page 3-5).
Check that the cylinder bolts are correctly
Compression
tightened (page 10-4).
is too low
Check for defective valves, or valve seats (page
10-12).
Check for worn piston, piston rings, or cylinder
(page 10-12).
Abnormal
Replace the faulty part(s) and adjust (page 6-3).
Abnormal
Adjust the ignition coil air gap.
TROUBLESHOOTING
4-3