Ryobi RY13015 Manuel d'utilisateur télécharger pdf (Page 15)

11 — English

MAINTENANCE

Tighten with a socket wrench and torque to 170 in. lb.

minimum, 190 in. lb. maximum. Do not overtighten.

Secure the engine housing back into place and return the

screw. Ensure that the housing is stable.

NOTICE:

Be careful not to cross thread the spark plug. Cross thread-

ing will seriously damage the product.

CHANGING ENGINE LUBRICANT

See Figure 19.

WARNING:

Do not change engine lubricant while it is hot. Accidental

contact with hot engine lubricant could result in serious

burns.

For best performance, engine lubricant should be changed

after every 25 hours of operation.

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

the engine to cool completely before proceeding.

 Remove the oil fill cap/dipstick.

 Tip the unit backward so the handles rest on the ground

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 unit to an upright position and refill with lubricant

following the instructions in the Adding/Checking Engine

Lubricant section previously in this manual.

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 20 - 22.

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 and disconnect the spark plug wire. Allow

the engine to cool completely before proceeding.

 Remove the screw fromthe top enginecover. Remove

engine cover and set aside.

 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 as shown. 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 completely

and properly reassembled before starting engine. Failure

to correctly reassemble engine could result in serious 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 RY13015 Manuel d'utilisateur Page 15

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