Ryobi RY28140 Troubleshooting, Gap. Refer to Spark Plug Replacement earlier, Speed. See Figure

TROUBLESHOOTING

IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM CONTACT YOUR AUTHORIZED SERVICE DEALER.

	PROBLEM	POSSIBLE CAUSE		SOLUTION
Engine will not start		1.	No spark.	1. Clean or replace spark plug. Reset spark plug
				gap. Refer to Spark Plug Replacement earlier
				in this manual.
		2.	No fuel.	2. Push primer bulb until bulb is full of fuel. If bulb
				does not fill, primary fuel delivery system is
				blocked. Contact an authorized service dealer. If
				primer bulb fills, engine may be flooded, proceed
				to next item.
		3.	Engine is flooded.	3. Set the CHOKE 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.

Engine does not reach full speed and emits excessive smoke

1.Incorrect lubricant/fuel mixture.

2.Air filter screen is dirty.

3.Spark arrestor screen is dirty.

4.Spark plug fouled.

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 an authorized servicing dealer.

4.Clean or replace spark plug. Reset spark plug gap. Refer to Spark Plug Replacement earlier in this manual.

Engine starts, runs, and ac-	1.	Idle speed screw on carburetor	1.	Turn idle speed screw clockwise to increase idle
celerates but will not idle		needs adjustment.		speed. See Figure 19.
Line will not advance	1.	Line is welded to itself.	1.	Lubricate line with silicone spray.
	2.	Not enough line on spool.	2.	Install more line. Refer to the applicable line
				replacement section in this manual.
	3.	Line is worn too short.	3.	Pull lines while alternately pressing down on and
				releasing spool retainer.
	4.	Line is tangled on spool.	4.	Remove line from spool and rewind. Refer to
				the applicable line replacement section in this
				manual.
	5.	Engine speed is too slow.	5. Advance line at full throttle.
Spool retainer hard to turn	1.	Screw threads are dirty or	1.	Clean threads and lubricate with grease - if no
		damaged.		improvement, replace the spool retainer.
Grass wraps around drive	1.	Cutting tall grass at ground	1.	Cut tall grass from the top down to prevent
shaft housing and string		level.		wrapping.
head	2.	Operating trimmer at part	2.	Operate trimmer at full throttle.

throttle.

14 — English