Ryobi 310r Manuel d'utilisateur télécharger pdf (Page 14)

3. Initial High Speed Mixture and Idle Speed Mixture

Needle Settings: Insert the screwdriver through the

hole at the back of the top handle (Fig. 32). Turn both

the high speed mixture and idle speed mixture

needles out (counterclockwise) until the limiter

caps stop.

4. Start the engine and let it run for a minute.

5. Release the throttle trigger and let the engine idle. If

the engine stops, turn the idle speed screw (Figs. 30

and 31) in (clockwise) 1/8 turn at a time (as required)

until the engine idles.

NOTE: Forcing the limiter caps with a

screwdriver will damage the needle tips

and the seat in the carburetor body.

6. Final Idle Speed Screw and Idle Speed Mixture

Needle Settings: Adjust the idle speed screw and idle

speed mixture needle for smoothest engine idle.

a. Turn the idle speed mixture needle (Figs. 30 and

31) in (clockwise) until you hear the fastest idle;

then turn the needle out (counterclockwise) 1/8

turn.

b. Squeeze the throttle trigger. If the engine falters

or hesitates as it accelerates, turn the idle speed

mixture needle (Figs. 30 and 31) out

(counterclockwise) 1/16 turn at a time until the

engine accelerates rapidly.

c. If the idle speed changes significantly because of

Steps a and b, readjust the idle speed screw

(refer to Step 2).

7. Final High Speed Mixture Needle Adjustment:

a. High speed mixture needle adjustment is not

recommended without a precision high speed

tachometer.

b. The factory presets the high speed mixture

needle at 1-1/4 turns out from the closed

position. Your unit should perform well at this

setting. If additional adjustment of the high speed

mixture needle is required, contact your local

authorized service dealer.

MAINTENANCE AND REPAIR INSTRUCTIONS (Continued)

Fig. 31

Fig. 29

Fig. 30

WALBRO CARBURETOR

Throttle

Lever

Idle Speed

Screw

High Speed

Mixture Needle

Idle Speed

Mixture Needle

Idle Speed

Screw

Throttle

Lever

High Speed

Mixture Needle

Idle Speed Mixture Needle

ZAMA CARBURETOR

NOTE: If the limiter caps are removed at any

time, your unit will no longer meet the

1995 California emission regulations and

you will void the warranty.

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Ryobi 310r Manuel d'utilisateur Page 14

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