Troubleshooting – Ryobi RY70105 User Manual

Page 20

PROBLEM

POS

POSSIBLE CA

SIBLE CA

SIBLE CAUSE

USE

SOLUTION

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

TROUBLESHOOTING

1. Check spark. Remove spark plug. Reattach the

spark plug cap and lay spark plug on metal
cylinder. Pull the starter rope and watch for
spark at spark plug tip. If there is no spark,
repeat test with a new spark plug.

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 (see next
item).

3. Remove spark plug, turn trimmer so spark plug

hole is aimed at the ground. Make sure lever is
in the “WARM START” position and pull starter
cord 10 to 14 times. This will clear excess fuel
from engine. Clean and reinstall spark plug.
With the throttle trigger fully depressed, pull
starter cord three times with lever at “WARM
START” position. If engine does not start,
move choke lever to “COLD START” and follow
normal starting instructions in "STARTING
AND STOPPING" section. If engine still fails to
start, repeat procedure with a new spark plug.

4. Contact a service dealer.

Release throttle trigger. Refer to “Starting and
Stopping” earlier in this manual.

*Turn “L” needle counterclockwise 1/16 turn. If
“L” low needle can not be turned counterclock-
wise, do not force plastic limiter caps. Contact a
service dealer.

See Figure 27.

1. Use fresh fuel and the correct 2-cycle oil mix.
2. Clean air filter. Refer to “Replacing and

Cleaning Air Filter” earlier in this manual.

3. Turn “H” needle clockwise 1/16 - 1/8 turn. See

Figure 27.

Turn idle speed screw clockwise to increase
idle speed. See

Figure 27.

Turn idle speed screw counterclockwise to reduce
idle speed.

See Figure 27. If after adjustment,

blade continues to rotate, return to an authorized
service dealer for repair.

Engine will not start:

Lever will not go into the
"COLD START" position:

Engine starts but will not
accelerate:

Engine does not reach full
speed and emits excessive
smoke:

Engine starts, runs, and
accelerates but will not
idle:

Blade continues to rotate at
idle speed:

1. No spark.

2. No fuel.

3. Flooded engine.

4. Starter rope pulls harder now than

when new.

Throttle trigger is depressed.

Carburetor requires adjustment.

1. Check oil fuel mixture.
2. Air filter dirty.

3. Carburetor requires adjustment.

Carburetor requires adjustment.