Ryobi RY29550 Manuel d'utilisateur télécharger pdf (Page 17)

13 — English

MAINTENANCE

INSTALLING STRING IN PRO CUT II

STRING

HEAD

See Figure 20.

Use monofilament string between .095 in. and .105 in.

diameter. Use original manufacturer’s replacement string

for best performance.

Stop the engine and disconnect the spark plug wire.

Gather two of the pre-cut lengths of trimmer string provided

or cut two pieces of trimmer string, in 11 in. lengths.

Insert the strings into the slots located on the sides of the

string head. String should be pushed in until approximately

1 in. protrudes from the holes on the top of the string

head.

Remove old string by pulling it from the holes located on

the top of the string head.

CLEANING THE EXHAUST PORT, MUFFLER

AND SPARK ARRESTOR

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

become 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.

The spark arrestor must be cleaned or replaced every

50 hours or yearly to ensure proper performance of your

product. Spark arrestors 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 21.

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 may result

from the cutting attachment turning at idle.

CLEANING AIR FILTER SCREEN

See Figures 22 - 23.

For proper performance and long life, keep air filter screen

clean.

 Remove the air filter cover by pushing down on the latch

with your thumb while gently pulling on the cover.

 Brush the air filter screen lightly to clean.

 Replace the air filter cover by inserting the tabs on the

bottom of the cover into the slots on the air filter base;

push the cover up until it latches securely in place.

FUEL CAP

WARNING:

A leaking fuel cap is a fire hazard and must be replaced

immediately.

The fuel cap contains a non-serviceable filter and a check

valve. A clogged fuel filter will cause poor engine perfor-

mance. If performance improves when the fuel cap is loos-

ened, check valve may be faulty or filter clogged. Replace

fuel cap if required.

SPARK PLUG REPLACEMENT

This engine uses a Champion RCJ-6Y or NGK BPMR7A

spark plug with .025 in. electrode gap. Use an exact replace-

ment and replace annually.

STORING THE PRODUCT

 Clean all foreign material from the product. Store idle unit

indoors in a dry, well-ventilated area that is inaccessible

to children. Keep away from corrosive agents such as

garden chemicals and de-icing salts.

 Abide by all ISO and local regulations for the safe storage

and handling of gasoline.

When storing 1 month or longer:

 Drain all fuel from tank into a container approved for

gasoline. Run engine until it stops.

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Ryobi RY29550 Manuel d'utilisateur Page 17

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