Troubleshooting - Toro 51930 Operator's Manual

Troubleshooting

Problem
Engine will not start
Engine does not reach full speed
and emits excessive smoke
Line will not advance when
using automatic line lengthen-
ing
Retaining cap hard to turn when
using automatic line lengthen-
ing
Grass wraps around the trimmer
head assembly and the attach-
ment shaft
Oil drips from muffler
24
Possible Cause
1. Switch set to the O (OFF)
position.
2. No spark
3. No fuel
4. Flooded engine
5. Starter cord pulls harder now
then when new
1. Check oil fuel mixture
2. Air filter is dirty
3. Spark arrestor screen is dirty
1. Line welded to itself
2. Not enough line on the
spool
3. Line worn too short
4. Line tangled on spool
5. Engine speed too slow
Screw threads are dirty or dam-
aged
1. Cutting tall grass at ground
level
2. Operating the product at
part throttle
1. Operating the product at
part throttle
2. Check oil/fuel mixture
3. Air filter is dirty
Solution
1. Set switch to the I (ON) position.
2. Remove the spark plug. Reattach the spark
plug cap and lay the spark plug on the metal
cylinder. Pull the starter cord and watch for a
spark at the spark plug tip. If there is no spark,
repeat the test with a new spark plug.
3. Push primer bulb until the bulb is full of fuel.
If the bulb does not fill, the primary fuel
delivery system is blocked. If the primer bulb
fills, the engine may be flooded. (See next
item.)
4. Remove the spark plug. Turn the product so
that the spark plug hole is aimed at the
ground. Make sure the choke lever is set to B
and pull the starter cord 10 to 14 times. This
clears excess fuel from the engine. Clean and
reinstall the spark plug. With the trigger fully
depressed, pull the starter cord 3 times. If the
engine does not start, set the choke lever to A
and follow normal starting instructions. If the
engine still fails to start, repeat the procedure
with a new spark plug.
5. Contact an authorized service dealer.
1. Use fresh fuel and the correct 2-cycle oil mix.
2. Clean the air filter.
3. Clean the spark arrester.
1. Lubricate with silicone spray.
2. Install more line.
3. Pull line while alternately pressing down on
and releasing the retaining cap.
4. Remove line from spool and rewind.
5. Advance line at full throttle.
Clean the threads and lubricate with grease. If
this does not solve the problem, replace the
retaining cap.
1. Cut tall grass from the top down.
2. Operate the product at full throttle.
1. Operate the product at full throttle.
2. Use fresh fuel and the correct 2-cycle oil mix.
3. Clean the air filter.
Troubleshooting