Ryobi BS903 Manuel d'utilisateur télécharger pdf (Page 21)

ADJUSTMENTS

ADJUSTING BLADE GUIDE SUPPORT, THRUST

BEARINGS, AND BLADE GUIDE BEARINGS

See Figures 20 - 22.

NOTE: Tighten the lock knob and refer to “Adjusting Blade

Tension” and “Tracking the Blade” procedures explained

in the ASSEMBLY section of this operator’s manual prior

to making adjustments. Fine tuning of the bearings can be

done with a flathead screwdriver.

The upper and lower blade guide bearings and thrust bear-

ings support the saw blade during cutting operations. The

adjustment of the guide bearings should be checked when-

ever a different blade is installed.

To Adjust Blade Guide Support:

 Remove the blade guard by loosening the two phillips

screws.

 Adjust the position of the blade guide support. Loosen

the blade guide support screw on the right side of the

blade guide assembly using the 2.5 mm hex key.

 Slide the upper blade guide support on the shaft until

the front edge of the thrust bearing is about 1/64 in. (0.4

mm) behind the back of the blade. Tighten the screw

securely.

Repeat this procedure for the lower blade guide support.

Replace the blade guard if no additional adjustments are

to be made.

To Adjust Thrust Bearings:

The thrust bearings support the back edge of the blade

during cutting. The blade should not contact the thrust

bearings when you stop cutting. It is important that both

upper and lower thrust bearings be adjusted equally.

 Remove the blade guard assembly by loosening the two

phillips screws.

 Using the 2.5 mm hex key, loosen the thrust bearing

screw.

 Slide the thrust bearing until the bearing is centered

behind the blade. Tighten the thrust bearing screw

securely.

NOTE: When properly adjusted, the blade will be centered

in front of the thrust bearing.

 Using a flathead screwdriver, turn the screw (centered in

the thrust bearing) until the bearing is within 1/64 in. (0.4

mm) of the blade.

Repeat this procedure on the lower thrust bearing located

below the saw table. Replace the blade guard if no additional

adjustments are to be made.

Fig. 21

BLADE

GUIDE

BLADE GUIDE

SUPPORT SCREW

BLADE GUIDE

SCREW

BLADE GUARD REMOVED

FOR CLARIFICATION ONLY

THRUST

BEARING

THRUST

BEARING

SCREW

Fig. 20

LOWER BLADE

GUIDE SUPPORT

THRUST

BEARING

SCREW

THRUST BEARING

WARNING:

Never operate saw without the blade guard secured in

place. To do so could result in possible serious personal

injury.

UPPER BLADE

GUIDE SUPPORT

BLADE GUIDE

SCREW

BLADE GUIDE

SUPPORT

SCREW

LOCK

KNOB

1 2 ... 16 17 18 19 20 21 22 23 24 25 26

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Ryobi BS903 Manuel d'utilisateur Page 21

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