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Page 7

Fig. 5

Fig. 4

OPERATION

VARIABLE SPEED

CONTROL SELECTOR

TO INCREASE SPEED

TO DECREASE SPEED

REVERSIBLE

See Figure 4.

Your drill has the feature of being reversible. The direction of
chuck rotation is controlled by a lever located above the
switch trigger. With your drill held in normal operating posi-
tion, the direction of rotation lever should be positioned to the
left of the switch for drilling operation. The direction of
rotation is reversed when the lever is to the right of the switch.

The design of the switch will not permit changing the
direction of rotation while the drill is running. Release
the switch trigger and allow the drill to stop before
changing its direction.

NOTE: Your drill will not run unless switch lever is
pushed fully to the left or right.

VARIABLE SPEED

See Figure 5.

Your drill has a variable speed control selector designed to
allow operator control and adjustment of speed and torque
limits. The speed and torque of your drill can be increased or
decreased by rotating the variable speed control selector in
the direction of the arrows shown in figure 5.

NOTE: Hold your drill in normal operating position and turn
the variable speed control selector clockwise to increase the
speed and torque of your drill. Turn counterclockwise to
decrease the speed and torque of your drill.

If you desire to lock the switch on at a given speed, depress
the switch trigger, push in and hold the lock-on button, and
release the switch trigger. Next, adjust the variable speed
control selector until the desired speed is reached.

NOTE: If the variable speed control selector is fully
turned in the counterclockwise direction (zero setting)
your drill may not run.

If you desire not to use the variable speed control
selector, turn it in the full clockwise direction. This will
allow the speed of your drill to be fully controlled by the
amount of switch trigger depression.

Avoid running your drill at low speeds for extended periods of
time. Running at low speeds under constant usage may
cause your drill to become overheated. If this occurs, cool
your drill by running it without a load and at full speed.

The following guidelines may be used in determining correct
speed for various applications:

LOW  speed is ideal when minimum speed and power is
required.  For example: starting holes without center punch-
ing, driving screws, mixing paint, and drilling in ceramics.

MEDIUM speed is suitable for drilling hard metals, plastics,
and laminates.

HIGH speed produces best results when maximum power is
required.  For example: drilling in wood; soft metals such as
aluminum, brass, and copper; and when using driving acces-
sories.

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Summary of Contents for D28VSR

Page 1: ...years of rugged trouble free performance CAUTION Carefully read through this entire owner s manual before using your new drill Pay close attention to the Rules for Safe Operation Warnings and Cautions...

Page 2: ...by themselves eliminate any danger The instructions or warnings they give are not substitutes for proper accident prevention measures SYMBOL MEANING SAFETY ALERT SYMBOL Indicates caution or warning M...

Page 3: ...heat oil and sharp edges 15 SECURE WORK Use clamps or a vise to hold work Both hands are needed to operate the tool 16 DON T OVERREACH Keep proper footing and balance at all times Do not use on a ladd...

Page 4: ...cated elsewhere in this instruction manual 31 DO NOT USE TOOL IF SWITCH DOES NOT TURN IT ON AND OFF Have defective switches replaced by an authorized service center 32 DRILLING INTO ELECTRICAL WIRING...

Page 5: ...d the motor will overheat If this tool does not operate when plugged into an outlet double check the power supply KNOW YOUR ELECTRIC DRILL See Figure 1 Before attempting to use your drill familiarize...

Page 6: ...o turn your drill OFF LOCK ON BUTTON See Figure 3 Your drill is equipped with a lock on feature which is convenient when continuous drilling for extended periods of time is required To lock on depress...

Page 7: ...of your drill Turn counterclockwise to decrease the speed and torque of your drill If you desire to lock the switch on at a given speed depress the switch trigger push in and hold the lock on button a...

Page 8: ...could cause drill bit to be thrown from your drill resultinginpossibleseriouspersonalinjuryordamagetoyour chuck 4 Tighten the chuck jaws securely on drill bit 5 To tighten the chuck jaws on drill bit...

Page 9: ...ressure to keep the bit cutting Do not force your drill or apply side pressure to elongate a hole Let your drill and bit do the work See Figure 8 WARNING Be prepared for binding or breakthrough When t...

Page 10: ...5 This will loosen the chuck on the spindle 6 It can now be unscrewed by hand See Figure 9 7 Open the chuck jaws and remove hex key wrench TO RETIGHTEN A LOOSE CHUCK The chuck may at times become loos...

Page 11: ...is heavy enough to carry the current the tool will draw A wire gage size A W G of at least 16 is recommended for an extension cord 100 feet or less in length When working outdoors use an extension cor...

Page 12: ...Ryobi Authorized Service Center You can also check our web site at www ryobi com for a complete list of Authorized Service Centers MODEL NO AND SERIAL NO The model number of this tool will be found o...

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