Ryobi 775r Manuel d'utilisateur télécharger pdf (Page 15)

OPERATING INSTRUCTIONS

15

Each time the head is bumped, about 1 in.

(25.4 mm.) of trimming line is released. A blade

in the cutting attachment shield will cut the line

to the proper length if excess line is released.

For best results, tap the Bump Head™ on bare

ground or hard soil. If line release is attempted

in tall grass, the engine may stall. Always keep

the trimming line fully extended. Line release

becomes more difficult as the cutting line

becomes shorter.

NOTE: Do not rest the Bump Head™ on

the ground.

CAUTION: Do not remove or alter

the line cutting blade assembly.

Excessive line length will make the

clutch overheat. This may lead to

serious personal injury or damage to

the unit.

Some line breakage will occur from:

• Entanglement with foreign matter

• Normal line fatigue

• Attempting to cut thick, stalky weeds

• Forcing the line into objects such as walls or

fence posts

ADJUSTING TRIMMING LINE LENGTH

The Bump Head™ cutting attachment allows

you to release trimming line without stopping

the engine. To release more line, lightly tap the

cutting attachment on the ground (Fig. 18)

while operating the trimmer at high speed.

NOTE: Always keep the trimming line fully

extended. Line release becomes more

difficult as cutting line becomes

shorter.

Fig. 18

HOLDING THE TRIMMER

WARNING: Always wear eye,

hearing, foot and body protection to

reduce the risk of injury when

operating this unit.

Before operating the unit, stand in the operating

position (Figs. 16 and 17). Check for the

following:

• The operator is wearing eye protection and

proper clothing.

• The right arm is slightly bent, and the hand is

holding the shaft grip.

• The left arm is straight, and the hand is

holding the handle.

• The unit is below waist level.

• The cutting attachment is parallel to the

ground and easily contacts the vegetation to

be cut without the operator having to bend

over.

Fig. 16

Fig. 17

Model 767r

Model 775r

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