Ryobi RY28100, Operator'S Manual

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9 — English
WARNING:
Always position the unit on the operator’s right side. The
use of the unit on the operator’s left side will expose the
user to hot surfaces and can result in possible burn injury.
WARNING:
To avoid burns from hot surfaces, never operate unit with
the bottom of the engine above waist level.
Hold the power head with your right hand on the rear handle
and your left hand on the front handle. Keep a firm grip with
both hands while in operation. Power head should be held at
a comfortable position with the rear handle about hip height.
See figure 5 for proper operation position with trimmer at-
tachment installed.
Always operate power head at full throttle. If debris becomes
wrapped around the attachment, STOP THE ENGINE, dis-
connect the spark plug wire, and remove the debris. Pro-
longed use at partial throttle will result in lubricant dripping
from the muffler.
WARNING:
Always hold the attachment away from the body keeping
clearance between the body and the product. Any
contact with the attachment cutting head can result in
burns and/or other serious personal injury.
BLADE THRUST
Exercise extreme caution when using a blade attachment
with this unit. Blade thrust is the reaction that may occur
when the spinning blade contacts anything it cannot cut.
This contact may cause the blade to stop for an instant, and
suddenly “thrust” the unit away from the object that was hit.
This reaction can be violent enough to cause the operator
to lose control of the unit. Blade thrust can occur without
warning if the blade snags, stalls, or binds. This is more likely
to occur in areas where it is difficult to see the material being
cut. For cutting ease and safety, approach the weeds being
cut with the brush cutter from the right to the left. In the event
an unexpected object or woody stock is encountered, this
practice could minimize the blade thrust reaction.
WARNING:
Extreme care must be taken when using blades to en-
sure safe operation. Read the safety information for safe
operation when using a blade and refer to the safety rules
and instructions in your attachment manual.
STARTING AND STOPPING
See Figures 6 - 8.
Power head should be on a flat, bare surface for starting.
To start a cold engine:
 Slowly press the primer bulb 10 times.

Set the choke lever to the START (A) position.
 Squeeze the throttle trigger fully and pull the starter handle
until the engine runs. Do not pull the starter grip more
than six (6) times.
NOTE: Keep throttle trigger squeezed fully through re-
maining steps. If the engine does not start, start over at
the first step with pressing the primer bulb.
 Allow the engine to run for 10 seconds, then set the choke
lever to the
RUN (B)
position.
To restart a warm engine:
 Slowly press the primer bulb 10 times.

Set the choke lever to the RUN (B) position.
 Squeeze the throttle trigger fully and pull the starter handle
until the engine runs.
To stop the engine:
 To stop the engine, depress the
STOP
switch to the stop
position “ ”.
IF ASSISTANCE IS REQUIRED FOR THIS PRODUCT:
Do not return this product to the retail store where it was
purchased. Please call our Customer Service Department
for any issues you may have.
For Help Call: 1-800-860-4050
OPERATION