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15 — English
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Engine will not start No spark.
No fuel.
Engine is flooded.
Clean or replace spark plug. Reset spark plug gap.
Refer to Spark Plug Replacement earlier in this
manual.
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 RUN 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 starter grip
and rope.
Engine does not reach full
speed and emits excessive
smoke
Air filter is dirty.
Spark arrestor screen is dirty.
Spark plug fouled.
Clean air filter. Refer to Cleaning the Air Filter earlier
in this manual.
Contact a qualified service center.
Clean or replace spark plug. Reset spark plug gap.
Refer to Spark Plug Replacement earlier in this
manual.
Engine starts, runs, and
accelerates but will not idle
Idle speed screw on carburetor
needs adjustment.
Turn idle speed screw clockwise to increase idle
speed. See Figure 18.
Engine emits too much smoke Too much lubricant in crankcase. Drain lubricant and refill with correct amount of 20W50
engine lubricant. See Adding/Checking Engine
Lubricant in the Operation section of this manual.
Engine rope cannot be pulled Lubricant has entered the
combustion chamber.
This is usually caused by storing the unit for an
extended time with the engine in an upside-down
position. Remove and clean the spark plug. Drain the
lubricant out of the spark plug hole, then reinstall the
spark plug.
Check engine lubricant and add if necessary prior
to starting. Refer to Adding/Checking Engine
Lubricant earlier in this manual.
Line will not advance Line is welded to itself.
Not enough line on spool.
Line is worn too short.
Line is tangled on spool.
Engine speed is too slow.
Replace line. Refer to the applicable line replacement
section in this manual.
Install more line. Refer to the applicable line
replacement section in this manual.
Pull lines while alternately pressing down on and
releasing the bump knob.
Remove line from spool and rewind. Refer to the
applicable line replacement section in this manual.
Advance line at full throttle.
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