GB
7
Pressure Clutch
• The tool is fitted with an internal pressure clutch that engages only when the drive is pushed against the
screw head, either when the Auto-Feed Mechanism (8) is used and plunged, or with individual screws.
IMPORTANT:
As only light additional pressure operates the drive, be careful in use not to be taken by surprise
when the drive engages.
Auto-feed Mechanism
Screw length adjustment
To adjust for different screw sizes, press down the Screw Length Adjustment Button (4) and adjust the length
position by pulling or pushing the Stopper Base (21)
Screw depth adjustment
To adjust the screw depth adjustment so the head of the screw is at the correct position in the plasterboard/
drywall, rotate the Depth Adjuster (9). Use scrap material if necessary to test the setting is correct
Auto-feed operation
Setup
1. Ensure the screw is in line with the Screw Centre Indicator (1)
2. Set the depth adjustment to the mid-point
3. Set the Speed Limiter Control (16) to the minimum setting for first use
4. Ensure the Forward/Reverse Selector (14) is in the forward position to insert screws into the workpiece as
indicated on the tool body
Operating
1. Place the Stopper Base (21) over the location for the first screw 90° to the surface
2. Use the Screw Centre Indicator (1) to aid positioning
3. Hold the drill by the Insulated Hand Grip (18) and the recess between the Auto-Feed Mechanism (8) and
screwdriver gearbox cowling
DO NOT:
Hold the tool close to any exposed mechanical area or the screws of the Auto-Feed Mechanism.
DO NOT:
Hold the tool by the screwdriver gearbox cowling if there is a risk of contacting electrical cables in
use.
4. Squeeze the Trigger (15) to operate. You can either squeeze the Trigger before each plunge or use the
Lock-On Button (17) to lock the drill ‘on’
5. Carefully push the Stopper Base against the material so the Auto-Feed Mechanism is compressed and
the screwdriver connects with the screw. As this happens, the inner part of the Auto-Feed Mechanism
submerges into the outer case of the Auto-Feed Mechanism and the drive is enabled on the Screwdriver
Power Tool (11)
6. Once the screw is inserted to its maximum level, carefully remove the Stopper Base from the work
surface so the Auto-Feed Mechanism is fully extended again
7. After you have inserted the first screw, adjust the required screw depth as described in ‘Screw Depth
Adjustment’ if necessary
8. The Auto-Feed Mechanism has brought the next screw up to the mounting point and operating can be
repeated immediately
Notes
• Always ensure that material is secure. If appropriate use a vice or clamp to hold the work
• The technique of connecting to and driving screws can be improved by operating the drill at a lower
speed while connecting to the screw by using light pressure on the Trigger and then increasing Trigger
pressure when driving the screws into the material. This will reduce wear on the Collated Screwdriver
Bit (25)
• Practising with scrap material is recommended in order to familiarise yourself with the tool
CAUTION:
The Auto-Feed Mechanism is not designed for hard material. It relies on easy entry for the screw
into the material. It is designed for drywall/plasterboard, low density wood and other similar materials. While
it may work with some harder materials, especially when used vertically, it can also be problematic in use
for such materials. It cannot be used to secure plasterboard/drywall to masonry or metal. This is not a fault
with the tool.
CAUTION:
Applying excess pressure does not result in faster or more efficient screwdriving. If the pressure
applied to the auto-feed screwdriver has a noticeable effect on the speed of the auto-feed screwdriver, then
reduce the pressure. Overloading the auto-feed screwdriver will reduce its service life.
Depth stop operation
The tool can be used for individual insertion and removal of screws. The Depth Stop Collar (22) ensures the
screw heads are at the correct level for plasterboard/drywall but the same head level is also useful for many
other applications.
1. Ensure the correct 25mm length screwdriver bit is fitted to the Bit Holder Extension (23) (PH2 typically for
plasterboard/drywall) and the Depth Stop Collar is also fitted to the tool
2. Make sure the Forward/Reverse Selector (14) is correctly set for insertion or removal
3. For most applications, set the Speed Limiter Control (16) to the minimum setting
4. Insert the screwdriver bit tip into the head of the screw to engage
5. Apply light pressure to the Trigger (15) and the screw head to engage the drive of the tool
Note:
Use a faster speed setting once you are more familiar with the tool
Note:
For use as a standard powered screwdriver without the depth stop reducing access to screws, replace
the Bit Holder Extension with a longer length bit holder or use ¼” screwdriver bits longer than 25mm.
Accessories
• A range of accessories and consumables, including GMC GMCAFSB33 (33mm 50pk) and GMCAFSB42
(42mm 50pk) collated screw belts, is available from your GMC stockist. Spare parts can be obtained from
toolsparesonline.com
Maintenance
<exclamation triangle> WARNING: ALWAYS disconnect from the power supply before carrying out any
inspection, maintenance or cleaning.
General inspection
• Regularly check that all the fixing screws are tight
• Inspect the supply cord of the tool, prior to each use, for damage or wear. Repairs should be carried out by
an authorised GMC service centre. This advice also applies to extension cords used with this tool
Cleaning
• Keep your tool clean at all times. Dirt and dust will cause internal parts to wear quickly, and shorten the
machine’s service life. Clean the body of your machine with a soft brush, or dry cloth. If available, use
clean, dry, compressed air to blow through the ventilation holes
• Clean the tool casing with a soft damp cloth using a mild detergent. Do not use alcohol, petrol or strong
cleaning agents
• Never use caustic agents to clean plastic parts
Cleaning and lubricating the mechanism
The Auto-Feed Mechanism (8) may require occasional cleaning and the Metal Guides (7) require lubrication to
maintain reliable operation.
1. Remove any fitted Screw Belt (20)
2. Press down the Screw Length Adjustment Button (4) and pull the Stopper Base (21) carefully from the
Auto-Feed Mechanism (8) housing and remove
3. Allow the main mechanism to drop slightly
4. Clean with compressed air or a small brush especially the channel the Collated Screwdriver Bit (25) fits
into
5. Apply light grease to the Metal Guides (7)
6. Check parts are in good working condition
7. Re-position the Auto-Feed Mechanism in-line with the Metal Guides and refit the Stopper Base
8. Do a quick check to make sure the Auto-Feed Mechanism is plunging normally. If not dis-assemble and
re-assemble
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