Honda HRN216 Series Manual page 16

HRN216
7. TROUBLESHOOTING
ENGINE
Hard Starting Using Recoil Starter Or Poor Engine Performance
Make sure the fuel valve is ON.
Check the fuel level.
Sufficient fuel in tank
Confirm the fuel quality. If gasoline is more than 30
days old, the engine may be hard to start.
Fresh fuel
Check the air filter.
Clean
Check the fuel strainer.
Clean
Remove the spark plug and inspect
Dry
Install the spark plug in the plug cap and perform the
spark test (P. 2-13).
Good spark
Check the choke butterfly with the engine cold.
Choke closed
Check the spark arrester (if equipped).
Clean
Install a compression gauge in the spark plug hole
(P. 2-13) and briskly crank the engine repeatedly until
a stabilized reading is obtained.
Compression normal
Remove, disassemble, and clean the carburetor
(P. 8-5).
Install the spark plug and restart the engine.
(P. 3-8).
No or weak spark
Choke partially open
Clogged
Refuel.
No fuel in tank
Drain the fuel system, and refill with
Stale fuel
fresh gasoline.
Clogged Clean or replace the air filter.
Clogged
Clean or replace the fuel strainer.
• Install a new spark plug, then restart
Wet
the engine.
• Check the carburetor for flooding.
• Check the ignition coil air gap
See "CHOKE CONTROL SYSTEM"
on page
Clean or replace the spark arrester.
Compression
Camshaft decompressor is not working,
is above
valve clearance excessive, or damaged
80 psi
rocker arm. Inspect the decompressor
(page
Check the valve clearance
and then perform the cylinder
Compression
compression test. If the cylinder
is too low
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
- Valve seat width
- Carbon on the valve seat
- Piston ring side clearance
- Piston ring width
- Piston ring end gap
- Piston skirt O.D.
- Cylinder sleeve I.D.
SERVICE INFORMATION
(P.
2-15.
P. 10-23).
(P. 3-15),
(P. 3-15)
(P. 10-31)
(P. 10-31)
(P. 10-25)
(P. 10-25)
(P. 10-25)
(P. 10-24)
(P. 10-24)
9-6).
2-7