Ryobi RY43160A Manuel de l'opérateur télécharger pdf (Page 17)

Page 17 — English

NOTE: New chain tends to stretch; check chain

tension frequently and tension as required.

NOTICE:

Chain tensioned while warm, can be too tight

upon cooling. Check the “cold tension” before

next use.

REPLACING THE BAR AND CHAIN

See Figures 13 - 16.

WARNING:

To avoid possible serious injury, stop the mo-

tor and disconnect from power supply before

replacing the bar, chain, or performing any

maintenance operation.

 Remove the bar nut (7/16 in.) and drivecase

cover.

 The bar contains a bar stud slot that fits over the

bar stud. The bar also contains a chain tension-

ing pin hole which fits over the chain tensioning

pin.

 Place the bar onto the bar stud so that the chain

tensioning pin fits into the chain tensioning pin

hole.

 Fit the chain over the sprocket and into the bar

groove. The cutters on the top of the bar should

face toward the bar tip, in the direction of the

chain rotation.

 Replace the drivecase cover and install the bar

nut. Tighten the bar nut finger tight only. The bar

must be free to move for tension adjustment.

 Remove all slack from chain by turning the chain

tensioning screw clockwise, assuring that the

chain seats into the bar groove during tension-

ing.

 Lift the tip of the bar up to check for sag. Re-

lease the tip of the bar, and turn the chain ten-

sioning screw 1/2 turn clockwise. Repeat this

process until sag does not exist.

 Hold the tip of the bar up and tighten the bar

nut securely.



Chain is correctly tensioned when there is no slack

on the underside of the bar, the chain is snug, but

it can be turned by hand without binding.

BAR

DRIVECASE

COVER

BAR NUT

CHAIN

Fig. 13

CHAIN

TENSIONING PIN

BAR

NUT

BAR STUD

SLOT

BAR

STUD

CHAIN

TENSIONING

PIN HOLE

BAR

SPROCKET

Fig. 14

CHAIN

TENSIONING SCREW

CHAIN

ROTATION

CHAIN

SPROCKET

Fig. 15

NOTE: If chain is too tight, it will not rotate. Loos-

en the bar nut slightly and turn adjusting screw

1/4 turn counterclockwise. Lift the tip of the bar

up and retighten bar nut.

MAINTENANCE

DRIVECASE

COVER

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 59 60

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Ryobi RY43160A Manuel de l'opérateur Page 17

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