marker trouble shoot

PROBLEM

SOLUTION

1. Screw wobbles when driven or breaks away from bit

1. Check bit tip. Worn or improper bit tips are the biggest culprits of driving problems. Proper bit is a reduced #2 (MARKERŽ part number 80110 ), not a standard #2 bit. Drywall screws have a special recess which does not accept standard # 2 bits to full depth.

2. Check screwgun bushing. The 1/4" hex receiver for the bit holder or power bit wears. See if the bit holder or power bit moves side-to-side when hand pressure applied. If so, the gun needs repairing.

2. Points burn off or penetration is slow:

1. Check material thickness. MARKERŽ "S" point screws are designed to penetrate 20 gauge. (However, most material manufacturers (roll-formers) are not holding tight tolerances these days.)

2. Measure maximum thickness . If you do not have a micrometer, send a scrap piece to us and we will measure for you.

3. Check hardness of material. Due to the competitive nature of materials, some products are "re-rolled". This re-working causes additional hardness or "hot spots" beyond the ability of the screw to penetrate. A possible solution is to use a DARTŽ self-drilling screw. Send us a scrap sample and we will test in our lab. (See "Problem Solver Sheet" 4:10).

4. Check the run and size of the electrical cord to insure proper amperage is reaching the tool. Cord manufacturers have recommended lengths versus wire gauge.

RECOMMENDED WIRE SIZES FOR EXTENSION CORDS
	CORD LENGTH IN FEET
NAMEPLATE AMPS	25’	50’	100’	150’
0-3	18	16	16	14
3-6	18	16	16	14
6-8	18	16	14	12
8-10	18	16	14	12
10-12	16	16	14	12
12-16	14	12
16-20	12	10

3. Screw penetrates (or breaks) paper:

1. Adjust the gun nosepiece until the proper setting is achieved. If the nosepiece has been removed, have the worker re-install it.