Troubleshooting - Homelite UT33600B Operator's Manual

Problem
Engine will not start
Engine does not reach full
speed and emits excessive
smoke
Engine starts, runs, and ac-
celerates but will not idle
Line will not advance
Spool retainer hard to turn
Grass wraps around drive
shaft housing and string head
Engine starts and runs but
string head does not turn
If problem persists after trying the above solutions, contact customer service or a qualified service center for assistance.
NOTICE:
As the equipment owner, you are responsible for the performance of the required maintenance listed in the
Maintenance section. It is recommended that you retain all receipts covering maintenance on your equipment. Neglect-
ing or failing to perform the required maintenance may increase emissions, decrease fuel efficiency, degrade perfor-
mance, cause irreversible engine damage and/or void your warranty.
This product has a Two-year Limited Warranty for personal, family, or household use
(90 days for business or commercial use). For warranty details, visit www.homelite.com

TROUBLESHOOTING

Possible Cause
1. No spark.
2. No fuel.
3. Engine is flooded.
1. Incorrect lubricant/fuel mixture.
2. Air filter is dirty.
3. Spark arrestor screen is dirty.
4. Spark plug fouled.
1. Idle speed screw on carburetor needs
adjustment.
1. Line is welded to itself.
2. Not enough line on spool.
3. Line is worn too short.
4. Line is tangled on spool.
5. Engine speed is too slow.
1. Screw threads are dirty or damaged. 1. Clean threads and lubricate with grease - if no
1. Cutting tall grass at ground level.
1. Shafts are incorrectly assembled.
or call (toll free) 1-800-242-4672.
Page 12 — English
Solution
1. Clean or replace spark plug. Reset spark plug gap.
Refer to Spark Plug Replacement earlier in this
manual.
2. Push primer bulb until bulb is full of fuel. If bulb does
not fill, primary fuel delivery system is blocked.
Contact a qualified service center. If primer bulb
fills, engine may be flooded, proceed to next item.
Set the CHOKE lever to the FULL CHOKE position.
3.
Squeeze the trigger and pull the starter grip and
rope repeatedly until the engine starts and runs.
NOTE: Depending on the severity of the flooding,
this may require numerous pulls of the rope.
1. Use fresh fuel and the correct 2-cycle lubricant
mix. (50:1).
2. Clean air filter screen. Refer to Cleaning Air Filter
earlier in this manual.
3. Contact a qualified service center.
4. Clean or replace spark plug. Reset spark plug gap.
Refer to Spark Plug Replacement earlier in this
manual.
1. Turn idle speed screw clockwise to increase idle
speed. See Figure 14.
1. Lubricate line with silicone spray.
2. Install more line. Refer to the applicable line re-
placement section in this manual.
3. Pull lines while alternately pressing down on and
releasing spool retainer.
4. Remove line from spool and rewind. Refer to the
applicable line replacement section in this manual.
5. Advance line at full throttle.
improvement, replace the spool retainer.
1. Cut tall grass from the top down to prevent
wrapping.
1. Reassemble shafts. Refer to Connecting the
Power Head Shaft and Trimmer Shaft in the
Assembly section of this manual.