Ryobi B850 specifications Switch, Preparing for Operation, Lubrication, Sanding Belt Selection

OPERATION

WARNING: YOUR SANDER SHOULD NEVER BE

CONNECTED TO POWER SUPPLY WHEN YOU

ARE ASSEMBLING PARTS, CHANGING BELTS,

OR MAKING ADJUSTMENTS.	LOCK "OFF" BUTTON
	REAR HANDLE

SWITCH

The switch of your sander is equipped with a "lock-off" button that reduces the possibility of accidental starting. You must depress and hold the "lock-off" button, pull the switch trigger, then release the "lock-off" button. See Figure 2.

W A R N I N G : B E F O R E C O N N E C T I N G Y O U R

SANDER TO POWER SUPPLY SOURCE, ALWAYS

MAKE SURE YOU DO NOT HAVE THE SWITCH

TRIGGER DEPRESSED IN THE "ON" POSITION.

F A I L U R E T O D O S O C O U L D R E S U L T I N

ACCIDENTAL STARTING OF YOUR SANDER

RESULTING IN POSSIBLE SERIOUS INJURY.

APPLICATIONS

(Use only for the purpose listed below)

■Coarse, medium and fine sanding of wood, metals, plastics and other materials.

■Smoothing rough boards, chamfering, rounding edges and many other general sanding applications.

■Removing rust, paint, varnishes, and stains.

PREPARING FOR OPERATION

For ease of operation and maintaining proper control, your sander has a front handle and a rear handle. These handles allow two-hand operation which aid in maintaining control, keeping sanding area level with workpiece, and keeping hands clear of sanding belt. When operating your sander always hold the front handle with your left hand and the rear handle with your right hand as shown in Figure 2.

WARNING: KEEP HANDS AND FINGERS CLEAR OF MOVING SANDING BELT, FRONT IDLER PULLEY AND DRIVE ROLLER ASSEMBLY . FAILURE TO DO SO WILL RESULT IN THE SANDING OF YOUR HANDS OR FINGERS.

See Figure 3.

FRONT HANDLE

Fig. 2

KEEP HANDS AND FINGERS

AWAY FROM THESE AREAS AT ALL TIMES

WARNING: DO NOT LET YOUR FINGERS REST OVER THE FRONT OR RIGHT EDGE OF THE SANDER. IF THE SANDING BELT WERE TO RUN OFF, OR IF IT WERE NOT PROPERLY ADJUSTED, YOUR FINGERS COULD COME IN CONTACT WITH THE MOVING SANDING BELT RESULTING IN POSSIBLE SERIOUS INJURY.

Always operate your sander as shown in Figure 2.

LUBRICATION

All of the bearings in this tool are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. Therefore, no further lubrication is required.

Fig. 3

SANDING BELT SELECTION

Selecting the correct size and type sanding belt is an extremely important step in achieving a high quality sanded finish. Standard 75 mm x 534 mm sanding belts made of aluminum oxide, silicon carbide, and other synthetic abrasives are best for power sanding. In general, coarse grit will remove the most material and fine grit will produce the smoothest finish in all sanding operations. The condition of the surface to be sanded will determine which grit belt will do the job. If the surface is rough, start with a coarse grit and sand until the surface is uniform. Medium grit may then be used to remove scratches left by the coarser belt and fine grit belt used for finishing of the surface. Always continue sanding with each grit belt until surface is uniform.

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