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25
PROBLEM POSSIBLE CAUSE SOLUTION
IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM CONTACT YOUR AUTHORIZED SERVICE DEALER.
TROUBLESHOOTING
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 service dealer. If primer
bulb fills, engine may be flooded, proceed to
next item.
3. Set the start lever to the START position. Squeeze
the trigger and pull the 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 Screen earlier in this manual.
3. Contact a servicing dealer.
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 32.
1. Lubricate string with silicone spray.
2. Install more string. Refer to the applicable string
replacement section in this manual.
3. Pull strings while alternately pressing down on
and releasing spool retainer.
4. Remove string from spool and rewind. Refer to
the applicable string replacement section in this
manual.
5. Advance string at full throttle.
Engine will not start
Engine does not reach full
speed and emits excessive
smoke
Engine starts, runs, and ac-
celerates but will not idle
String will not advance
1. No spark.
2. No fuel.
3. Engine is flooded.
1. Incorrect lubricant/fuel mixture.
2. Air filter screen is dirty.
3. Spark arrestor screen is dirty.
4. Spark plug fouled.
1. Idle speed screw on carburetor
needs adjustment.
1. String is welded to itself.
2. Not enough string on spool.
3. String is worn too short.
4. String is tangled on spool.
5. Engine speed is too slow.
Fig. 32
IDLE SPEED
SCREW
AIR FILTER
COVER