Homelite UT20024A - Manual (Page 17)

Page 17
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
1. Check spark. Remove spark plug. Reattach the
spark plug cap and lay spark plug on metal
cylinder. Pull the starter rope and watch for
spark at spark plug tip. If there is no spark,
repeat test with a new spark plug.
2. Push primer bulb until bulb is full of fuel. If bulb
does not fill, primary fuel delivery system is
blocked. Contact a servicing dealer. If primer
bulb fills, engine may be flooded, proceed to
next item.
3. Remove spark plug, turn trimmer so spark plug
hole is aimed at the ground. Move choke lever
to “RUN” (C) position and pull starter cord 10
to 15 times. This will clear excess fuel from
engine. Clean and reinstall spark plug. Pull
starter three times with choke lever at “RUN”.
If engine does not start, move choke lever to
“FULL CHOKE” (A) position and repeat normal
starting procedure. If engine still fails to start,
repeat procedure with a new spark plug.
4. Contact a servicing dealer.
Allow engine to completely warm up. If engine
does not accelerate after three minutes, contact
a servicing dealer.
Contact a servicing dealer.
1. Use fresh fuel and the correct 2-cycle oil mix.
2. Clean air filter. Refer to “Replacing and Clean-
ing Air Filter” earlier in this manual.
3. Contact a servicing dealer.
Turn idle speed screw clockwise to increase idle
speed.
Engine will not start
Engine starts but will not
accelerate
Engine starts but will only
run at high speed at half
choke
Engine does not reach full
speed and emits excessive
smoke
Engine starts, runs, and ac-
celerates but will not idle
1. No spark.
2. No fuel.
3. Engine is flooded.
4. Starter rope pulls harder now than
when new.
Engine requires approximately three
minutes to warm up.
Carburetor requires adjustment.
1. Check oil fuel mixture.
2. Air filter is dirty.
3. Spark arrestor screen is dirty.
Idle speed screw on carburetor needs
adjustment.