MAC TOOLS MCF894, Instruction Manual

Page: 10 / 32

English
8
Mode Selector (Fig. A, G)
Your tool is equipped with a mode selector 9 which allows
you to select one of two speeds or the Impact Assist mode.
Select the speed/mode based on the application and
control the speed of the tool using the variable speed trigger
switch
1 .
Impact Assist™ (Fig. G)
In addition to normal impacting modes, this tool features the
Impact Assist™ mode which grants the user greater control
in both fastening and loosening applications. When set in
forward, the tool will fasten at 2000 RPM until impact begins.
The tool will then pause for 0.5 seconds before continuing
to impact at a rate of 3100 IPM, providing the user with
greater control and reducing the chance of overtightening or
damaging material.
When set in reverse, the tool will impact at a normal speed
and rate of 3100 IPM. Upon sensing that the fastener has
broken free, the tool will cease to impact and will reduce
speed to help prevent “run-off” of loose hardware.
MF894
Low Mode Normal Impacting RPM 0–900
High Mode High Speed Impacting RPM 0–2000
Impact Assist Mode Impact Assist RPM 0–2000
Worklight (Fig. A)
The worklight 7 is activated when the trigger switch is
depressed, and will automatically turn off 20 seconds after
the trigger switch is released. If the trigger switch remains
depressed, the worklight will remain on.
nOTE: The worklight is for lighting the immediate work
surface and is not intended to be used as a flashlight.
Variable Speed Trigger and Forward/
Reverse Control Button (Fig. A)
The tool is turned on and off by pulling and releasing the
variable speed trigger 1 . The farther the trigger is depressed,
the higher the speed of the tool. Your tool is equipped with
a brake. The chuck will stop as soon as the trigger switch is
fully released.
A forward/reverse control button
2 determines the
rotational direction of the tool and also serves as a
lock-off button.
• To select forward rotation (clockwise), release the trigger
and depress the forward/reverse control button on the
right side of the tool.
• To select reverse (counterclockwise), depress the
forward/reverse control button on the left side of
the tool.
Proper Hand Position (Fig. F)
WARNING: To reduce the risk of serious personal injury,
ALWAYS
use proper hand position as shown.
WARNING: To reduce the risk of serious personal
injury,
ALWAYS
hold securely in anticipation of a
sudden reaction.
Proper hand position requires one hand on the main
handle
4 .
Installing and Removing the Battery Pack
(Fig. E)
nOTE:
For best results, make sure your battery pack is
fully charged.
To install the battery pack
6 into the tool handle, align the
battery pack with the rails inside the tool’s handle and slide it
into the handle until the battery pack is firmly seated in the
tool and ensure that it does not disengage.
To remove the battery pack from the tool, press the release
button
5 and firmly pull the battery pack out of the tool
handle. Insert it into the charger as described in the charger
section of this manual.
OPERATION
WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can cause injury.
CAUTION: Inspect anvils and hog rings prior to
use. Missing or damaged items should be replaced
before use.
Place the switch in the locked off (center) position or remove
battery pack before changing accessories.
To install an accessory on the hog ring anvil,
firmly push
accessory onto the anvil 3 . The hog ring 8 compresses
to allow the accessory to slide on. After accessory is
installed, the hog ring applies pressure to help provide
accessory retention.
To remove an accessory, grasp the accessory and firmly
pull it off.
nOTE: The center position of the control button locks the
tool in the off position. When changing the position of the
control button, be sure the trigger is released.
nOTE: Continuous use in variable speed range is not
recommended. It may damage the switch and should
be avoided.
nOTE: The first time the tool is run after changing the
direction of rotation, you may hear a click on start up. This is
normal and does not indicate a problem.
Usage (Fig. A)
CAUTION:
Ensure fastener and/or system will
withstand the level of torque generated by the tool.
Excessive torque may cause breakage and possible
personal injury.
1. Place the accessory on the fastener head. Keep the tool
pointed straight at the fastener.
2. Press variable speed trigger switch 1 to start operation.
Release variable speed trigger switch to stop operation.
Always check torque with a torque wrench, as the
fastening torque is affected by many factors including
the following:
‑ Voltage: Low voltage, due to a nearly discharged
battery, will reduce fastening torque.
‑ Accessory size: Failure to use the correct accessory
size will cause a reduction in fastening torque.