Porter-Cable 7751 instruction manual TWO Speed Gear Shift, Attaching the Auxiliary Handle

TWO SPEED GEAR SHIFT

The Model 7751 Hammer-Drill has a two speed gear shift that provides a high speed of approximately 2500 RPM and a low speed of approximately 1000 rpm (with the trigger switch in “Full-On” position).

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For high speed operation, rotate the speed selecting knob (A) Fig. 4 clockwise aligning the “H” with the indicating mark (B) Fig. 4. For low speed operation, rotate the knob counter-clockwise, aligning the “L” with the indicating mark. You may need to rotate the chuck by hand while rotating the knob.

Do not shift speeds while the tool is running.

B

A B

A

Fig. 3

Fig. 4

ATTACHING THE AUXILIARY HANDLE

Use this auxiliary handle and hold it as illustrated in Fig. 6 to resist rotational force and to prevent accidental electrical shock, resulting from cutting a live wire when drilling into a wall or other blind areas. Use this auxiliary handle during all drilling operations.

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1.Insert the square nut (A) Fig. 5 into the recess in the auxiliary handle

(B).

2.Position the clamping plate (C) on the auxiliary handle with the serations over the hex opening.

E

A

B

D

C

F

Fig. 5

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