Craftsman OR20451 Operation Manual - Page 14

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To prevent personal injury, always disconnect plug

from

the power source when making any adjustment.

SPINDLE

I

QUILL (FIG. N)

Rotate the feed handles counterclockwiseto lower

spindleto its lowest position. Hand supportthe

spindlesecurely and move it back and forth around

the axis. If there is too much play, do the following:

1.

Loosen the lock nut (1).

2.

Turn the screw (2) clockwiseto eliminate the play,

but without obstructingthe upward movement of

the

spindle.

(A

little

play

in

the

spindle is

normal.)

3.

Tighten the lock nut (1).

Fig. O

Fig. N

QUILL RETURN SPRING (FIG. O)

The quill return

spring may need

adjustment if

the

tension cause the quillto return too

rapidly

or too

slowly.

1. Lowerthe table

for

additionalclearance.

2. Place a screwdriver in the

lower front

notch (1) of

the springcap (2). Hold

it

in place while loosening

and removingonly the outer jam nut (3).

3. With

the

screwdriverstill

engaged

in the notch,

loosen the inner nut (4) just until the notch(5)

disengages

from the boss

(6) on the drill press

head.

CAUTION: DO NOT REMOVE THIS INNER NUT,

because

the spring

will forcibly

unwind.

4. Carefully turn

the

spring cap (2) counterclockwise

with the screwdriver, engaging the next notch.

5. Lower the quill to the lowest position by rotating the

feed handle in a counterclockwise direction while

holding the spring cap (2) in position.

6. If the quill moves up and down as easily as you

desire, tighten the standard nut (4) with the

adjustable wrench. If too loose, repeat steps 2

through 5 to tighten. If too tight, reverse steps 4 and

5.

DO NOT OVERTIGHTEN

and restrict quill

movement.

7. Replace the jam nut (3)

and

tighten against the

standard nut (4) to prevent the standard nut from

reversing.

2

To

avoid

injury from

an

accidental start, ALWAYS

make

sure

the

switch

is in the "OFF" position, the

switch key is removed, and the plug is not connected

to the power source outlet before making belt

adjustments.

BELT TENSION

(FIG. P)

Make sure pulleys

are

aligned

properly as shown

in

Figure R on page 15.

1. To unlock the

belt

tension, turn the belt tension lock

knobs

(1) on

each

side of the drill press head

counterclockwise.

2. Tighten the

belts by

turningthe

belt

tension handle

(2) clockwise.

3. Loosenthe belts

by turning

the

belt

tensin handle

(2) counterclockwise.

Set belts

on pulley steps

for

desired speed.

4. Lock

the

belt tension lock knobs (1) by turning

clockwise.

NOTE:

Belt tension is correct

if

the belt deflects

approximately 1/2 inch when pressed

at

its

center.

Fig. P

14

Craftsman OR20451 Operation Manual - Page 14

Fig. O, Fig. N, Fig. P - 15 inch drill press

Page 14 highlights