MK Products Cobra MX - Manual (Page 10)

Cobra ® MX Euro Compatible™ 7 Pin Owner's Manual - Page 3
trigger lever and the micro switch lever.
This will enable the operator to increase the sensitivity of the trigger lever.
Sensitivity Adjustment
With the wire feeder turned on (with or without welding wire loaded), turn the
screw in until the micro-switch is activated. Once activated, the gun and wire
feeder motors will begin feeding wire. Retract the screw accordingly until the
system is deactivated and adjusted to the operators' liking.
Drive Roll and Idler Rolls
General
The Cobra MX Euro Compatible 7 Pin gun comes standard with a knurled
drive roll and a grooved idler roll, which will handle aluminum wire with
diameters of .030 to 1/16 inch and steel from .030 to .045 inches. Optional
insulated V-groove drive rolls are also available for aluminum wire if desired
(see optional kits).
Drive roll tension is accomplished with a unique spring-loaded pressure
screw. The Cobra
MX Euro Compatible 7 Pin comes from the factory
with the pressure adjustment screw preset. NO ADJUSTMENT IS
rEQUIrED For ALL SIzES AnD TyPES oF WIrES
.
Drive Roll Installation/Removal
Note: Neither of the handles needs to be removed to access the drive or
idler rolls.
1. Pull the cam lever away from the idler roll. This
will relieve the pressure against the drive roll (as
shown in Figure 1).
2. Align the drive roll removal tool (P/N 931-0100)
over the flats of the drive roll (as shown in Figure
2). Hold the gun with one hand or on a table
top, with the other hand give the removal
tool a quick snap-turn in the CLOCKWISE
DIRECTION.
3. Once the drive roll is loose, continue to spin
drive roll in the clockwise direction to remove
the drive roll from the gun.
4. Install a new drive roll on the left-hand
threaded shaft. The drive roll will self-tighten
when it is feeding wire.
Idler Roll Installation and Removal
(Reference Figure 3)
1. Using a slot type screwdriver, loosen idler screw, taking care not to lose
lock washer under idler roll.
2. Insert new idler roll and lock washer onto screw, insuring that idler groove
is toward top and lock washer is beneath.
3. Tighten.
NOTE: Lock washer must be under idler roll or it will not turn freely.
Figure 2
Cam Lever
Figure 1
Figure 3