Ryobi RY13016 - Manual (Page 14)

10 — English
MAINTENANCE
WARNING:
When servicing, use only identical replacement parts. Use
of any other parts can create a hazard or cause product
damage.
WARNING:
Always wear eye protection with side shields marked to
comply with ANSI Z87.1, along with hearing protection.
Failure to do so could result in objects being thrown into
your eyes and other possible serious injuries.
WARNING:
Before inspecting, cleaning, or servicing the machine, shut
off engine, wait for all moving parts to stop, and disconnect
spark plug wire and move it away from spark plug. Failure
to follow these instructions can result in serious personal
injury or property damage.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most plastics
are susceptible to damage from various types of commercial
solvents and may be damaged by their use. Use clean cloths
to remove dirt, dust, lubricant, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating lubricants, etc., come in con-
tact with plastic parts. Chemicals can damage, weaken or
destroy plastic which could result in serious personal injury.
You can often make adjustments and repairs described here.
For other repairs, have the trimmer serviced by an authorized
service dealer.
ACCESSING THE STRING HEAD
See Figure 15.

Rotate mow ball with hex bolt CLOCKWISE to loosen.
 Remove mow ball with hex bolt from shaft.
To reattach mow ball:

Slide mow ball with hex bolt onto shaft.
 Rotate COUNTER CLOCKWISE to tighten.
CLEANING THE AIR INTAKE SCREEN
See Figure 16.
If the air intake screen becomes clogged or dirty, air circulation
will decrease and engine performance will suffer.
To clean:

Stop the trimmer and disconnect the spark plug wire.
 Allow the unit to cool, if necessary.
 Using a dry cloth or nylon brush, remove dirt and debris
from screen.
IDLE SPEED ADJUSTMENT
See Figure 17.
WARNING:
The cutting head will move when adjusting the idle speed.
Wear all protective clothing and keep all by standers,
children, and pets at least 50 ft. away. Make adjustments
with the unit supported by hand so that the cutting head
does not contact the ground or any object. Keep all parts
of your body away from the cutting head and muffler.
Failure to follow these instructions could result in serious
personal injury.
If the cutting attachment turns at idle, the idle speed screw
needs adjusting on the engine. Turn the idle speed screw
counterclockwise to reduce the idle RPM and stop the cutting
attachment movement. If the cutting attachment still moves
at idle speed, contact a service dealer for adjustment and
discontinue use until the repair is made.
WARNING:
The cutting attachment should never turn at idle. Turn
the idle speed screw counterclockwise to reduce the idle
RPM and stop the cutting attachment, or contact a service
dealer for adjustment and discontinue use until the repair is
made. Serious personal injury could result from the cutting
attachment turning at idle.
CLEANING AIR FILTER
See Figure 18.
Clean the air filter as indicated by the maintenance schedule.
To clean the air filter:

Loosen the air filter cover by turning the knob
counterclockwise.
 Remove the air filter cover.
 Remove the air filter.
 Lightly tap or blow out dirt particles from filter.
 Reinstall the air filter.
NOTE: Make sure the filter is seated properly inside the
cover. Installing the filter incorrectly will allow dirt to enter
the engine, causing rapid engine wear.
 Reinstall the cover.
 Tighten knob to secure.
NOTE: For best performance, the air filter should be re-
placed once each year.