Ryobi RY13010 - 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 may result from the cutting
attachment turning at idle.
CLEANING AIR FILTER
See Figure 17.
A dirty air filter will cause starting difficulty, loss of perfor-
mance, and shorten the life span of the engine. Check the air
filter monthly. For best performance, replace the air filter at
least once a year.

Depress the latch located below the air filter cover. Then,
lift the cover away from the locking tabs and remove it from
the unit.
 Remove the air filter.
 Clean the foam filter element with warm soapy water. Rinse
and let dry.
NOTE: If the foam filter element is damaged, it should be
replaced.
 Apply a light coat of engine lubricant to the foam filter
element, then squeeze it out.
 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.
FUEL CAP
WARNING:
Check for fuel leaks. A leaking fuel cap is a fire hazard and
must be replaced immediately. If you find any leaks, cor-
rect the problem before using the product. Failure to do
so could result in a fire that could cause serious 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.
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 may 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.
CLEANING THE EXHAUST PORT AND
MUFFLER
NOTE: Depending on the type of fuel used, the type and
amount of lubricant used, and/or your operating conditions, the
exhaust port, muffler, and/or spark arrestor screen may be-
come blocked with carbon deposits. If you notice a power loss
with your gas powered tool, you may need to remove these
deposits to restore performance. We highly recommend that
only qualified service technicians perform this service.
SPARK ARRESTOR
The spark arrestor must be replaced every 50 hours or yearly
to ensure proper performance of your product. Spark arres-
tors may be in different locations depending on the model
purchased. Please contact your nearest service dealer for the
location of the spark arrestor for your model.
IDLE SPEED ADJUSTMENT
See Figure 16.
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.