Ryobi RY09460 Manuel de l'opérateur télécharger pdf (Page 15)

11 - English

MAINTENANCE

 Disconnect the spark plug wire.

 Remove the oil fill cap/dipstick.

 Tip blower on its side and allow lubricant to drain from

the oil fill hole into an approved container.

NOTE: Drain the lubricant while the engine is still warm

but not hot. Warm lubricant will drain quickly and more

completely.

 Return the blower to an upright position and refill with

lubricant following the instructions in the Adding/

Checking Engine Lubricant section previously in this

manual.

 Reinstall the bottom engine cover. Replace the screws

and tighten securely.

 Replace the screw in the top engine cover and tighten

securely.

NOTE:Used lubricant should be disposed of at an approved

disposal site. See your local retailer for more information.

ADJUSTING CAMSHAFT-TO-ROCKER ARM

CLEARANCE

See Figures 14 - 15.

Inspect the camshaft-to-rocker arm clearance after every

25 hours of operation. This should be done in a clean, dust-

free environment.

NOTE: This procedure requires partial disassembly of the

engine. If you are unsure if you are qualified to perform this

operation, take the unit to an authorized service center.

 Stop the engine. Allow the engine to cool completely

before proceeding.

 Remove screws from the engine cover. Remove engine

cover and set aside.

 Disconnect the spark plug wire.

 Using a Torx screwdriver, remove the screw from the

rocker arm cover. Remove the cover and set aside.

 Position camshaft by pulling the recoil starter grip just

until the deep hole in the camshaft gear is located at the

6 o’clock position.

 Place the feeler gauge under each rocker arm and

measure the gap. The gap should be between .006 in.

(0.15 mm) and .008 in. (0.20 mm) for both rocker arms.

NOTE: Use a standard automotive feeler gauge. The

.006 in. (0.15 mm) feeler gauge should slide between

the rocker arm and valve stem with a slight amount of

resistance but without binding. The 0.008 in. (0.20 mm)

feeler gage should not slide between the rocker arms and

the cam lobes — it should be held tight.

 If the valve clearance is not between .006 in. (0.15 mm)

and .008 in. (0.20 mm), the clearance should be adjusted

as follows:

 While holding a wrench on the flats of the adjusting

nut with one hand, loosen the retaining nut with a

second wrench. Take care not to loosen the stud.

 Rotate the adjusting nut until it touches the feeler

gauge. Once the gap setting is correct, hold the

wrench on the flats of the adjusting nut and retighten

the retaining nut securely.

 Adjust the second rocker arm, if necessary.

 Replace the rocker arm cover and screw; tighten

securely.

 Replace the top engine cover and screw; tighten

securely.

WARNING:

Ensure all engine cover and all engine parts are com-

pletely and properly reassembled before starting engine.

Failure to correctly reassemble engine may result in seri-

ous injury or property damage.

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.

HIGH ALTITUDE ENGINE OPERATION

Please have an authorized service center adjust this engine

if it is to be run above 2000 feet. Failure to do so may result

in poor engine performance and increased emissions. An

engine adjusted for high altitudes can not be run at 2000

feet or lower. In doing so, the engine will overheat and cause

serious engine damage. Please have an authorized service

center restore high altitude modified engines to the original

factory specification before operating below 2000 feet.

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Ryobi RY09460 Manuel de l'opérateur Page 15

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