Honda HRX217K6HYA, Manual

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2-7
HRX217HYA • HRX217HZA SERVICE INFORMATION
7. TROUBLESHOOTING
ENGINE
HARD STARTING WITH THE RECOIL STARTER OR POOR ENGINE PERFORMANCE
Sufficient fuel in tank
Refuel.
• Install a new spark plug, then
restart the engine.
• Check the carburetor for flooding.
Check the ignition coil air gap ( P. 9-5 ).
Check the valve clearance ( P. 3-12 ),
and then perform the cylinder
compression test. If the cylinder
compression is still too low, perform a
leak down test.
If the air leak down test shows air
leakage, check the following as
determined by the test:
- Valve sticking open (
P. 10-21 )
- Valve seat width ( P. 10-22 )
- Carbon on the valve seat ( P. 10-23 )
- Piston ring side clearance ( P. 10-16 )
- Piston ring width ( P. 10-16 )
- Piston ring end gap ( P. 10-17 )
- Piston skirt O.D. ( P. 10-17 )
- Cylinder sleeve I.D. ( P. 10-15 )
Check the fuel level.
Install the spark plug and restart the engine.
No fuel in tank
Dry
Wet
Remove the spark plug and inspect ( P. 3-9 ).
Good spark
No or weak spark
Compression
is above
80 psi
Install a compression gauge in the spark plug hole
( P. 2-12 ). Use the recoil starter to briskly crank the
engine several times.
Install the spark plug in the plug cap and perform the
spark test ( P. 2-12 ).
Remove, disassemble ( P. 8-2 ), and clean the
carburetor ( P. 8-9 ).
Check the choke butterfly with the engine cold.
Choke closed
Confirm the fuel quality. If gasoline is more than 30
days old, the engine may be hard to start ( P. 2-16 ).
Fresh fuel
Drain the fuel system, and refill with
fresh gasoline.
Stale fuel
Camshaft decompressor is not
working, valve clearance excessive.
Inspect the decompressor and valve
clearance (pages P. 3-12 , P. 10-14 )
See “CHOKE CONTROL SYSTEM”
on page 2-15 .
Make sure the fuel valve is ON.
Clean or replace the air filter.
Clean
Clogged
Check the air filter.
Compression
is too low
Choke partially open
Compression normal
Clean or replace the fuel filter.
Clean
Clogged
Check the fuel filter.
Clean or replace the spark arrester.
Clean
Clogged
Check the spark arrester (if equipped).