Ryobi RY4CCSVNM Manuel D'utilisation page 14

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 contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which can result in serious personal injury.
LINE REPLACEMENT
See Figures 13 - 14.
Use only .095 in. trimmer line. Use original manufacturer's
replacement line for best performance.
 Stop the engine and disconnect the spark plug wire.
 Rotate the bump knob clockwise as necessary to align the
arrows on the bump knob with the arrows on the string
head housing.
 Cut one piece of trimmer line 16 ft. long. Insert the line
into the eyelet on the string head housing. Push until the
end of the line comes out the other side of the housing.
Pull the line until equal amounts of line appear on both
sides of the housing.
NOTE: Line may jam if more than 16 ft. is loaded.
 Either by hand or using the Speed Winder
bump knob clockwise to wind the line on the spool until
approximately 6 in. of line is showing on each side.
NOTE: For best results, after every five to seven revolutions
of the Speed Winder
™
loading results and to help prevent line from tangling.
 Push the bump knob down while pulling on line(s) to
manually advance the line.
CLEARING LINE JAM AND/OR REPLACING
BUMP KNOB
See Figures 15 - 16.
 Stop the engine and disconnect the spark plug wire.
 Depress the tabs on the side of the string head housing
to remove the lower string head housing.
NOTE: The housing is spring loaded and will self eject
when the tabs are depressed. It is not necessary to remove
the upper string head housing from the drive shaft.
 Push the spool and bump knob through the string head
housing and remove the string from the spool.
 If replacing the bump knob, remove the old knob from
the spool. Align the knob ribs with the spool slots and
place the new bump knob onto the spool. If you are not
replacing the bump knob, skip this step.
MAINTENANCE
, rotate the
™
, pull both line ends taut for best
 Insert the bump knob and spool assembly through the
opening in the string head housing.
 Align the slots on the lower string head housing with the
tabs on the upper string head housing.
 Push the housing together until the tabs snap into place.
NOTE: Hold the spool by the knob while completing the
installation.
 Install line as described in Line Replacement.
IDLE SPEED ADJUSTMENT
See Figure 17.
WARNING:
The cutting head will move when adjusting the idle speed.
Wear all protective clothing and keep all bystanders,
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 THE AIR FILTER
See Figures 18 - 19.
For proper performance and long life, keep air filter screen
clean.
 Remove the air filter cover. To remove, push up on the
latch at the bottom of the cover and gently pull the cover
up.
 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.
10 — English