Ryobi RY13015 - Manual (Page 14)

10 — English
MAINTENANCE
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 17.
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.
FUEL CAP, TANK, AND LINES
WARNING:
Check for fuel leaks. A leaking fuel cap, tank, or lines are a
fire hazard and must be replaced immediately. If you find
any leaks, correct the problem before using the product.
Failure to do so could result in a fire that could cause seri-
ous personal injury.
The fuel cap contains a non-serviceable filter and a check
valve. A clogged fuel filter will cause poor engine performance.
If performance improves when the fuel cap is loosened,
check valve may be faulty or filter clogged. Replace fuel cap
if required.
REPLACING THE SPARK PLUG
See Figure 18.
This engine uses a Champion RY4C spark plug with .025 in.
electrode gap. Use an exact replacement and replace annually.

Remove the screw on back of the engine housing. This will
allow the engine housing to uncover as shown.
 Remove the spark plug wire.
 Loosen the spark plug by turning it counterclockwise with
a socket wrench.
 Remove the spark plug.
 Hand thread the new spark plug, turning it clockwise.
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 14.

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 15.
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 16.
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.