
It is IMPORTANT to ensure that the pin meets
the plunger squarely. Lift and lower the cover
and make sure you can hear the microswitch
operating. It may be necessary to bend the pin
slightly to ensure proper operation.
The pulleys can now be tted. Note that they are
not interchangeable. The motor shaft pulley is
positioned using a wrench and a spring-loaded
thrust screw. For this reason, a keyway is prepared
in the bore, while the gearbox pulley has no
keyway and is positioned with a spring-loaded
thrust screw on a plate milled in the shaft.
IMPORTANT! When tting, ensure that the motor
or drive wheel with the smallest diameter drives
the gearbox or blade with the largest diameter,
i.e. they are mounted in reverse to each other.
Itis normal to t the drive pulley with the smallest
diameter facing inwards and the gearbox pulley
with the smallest diameter facing outwards (as
illustrated in the partial diagram, Fig 3, Page 6).
Place the gearbox pulley on its shaft, making sure
the thrust screw lines up with the plate on the
shaft. Fully tighten the thrust screw. Fit the motor
pulley on the shaft so that it lines up with the
gearbox pulley. This can be done with a straight
edge across the top of the pulley to ensure the
grooves are aligned. When correctly aligned,
tighten the supplied thrust screw.
Note that the motor will pivot around its mounts.
To t the drive belt, lift the motor and let the belt
slide over the pulleys. Belt tensioning is performed
using a bolt through the motor mounting plate.
Screw the bolt “in” until the belt can be pushed
down about 1.3cm in the middle. Lock the
adjusting screw using the lock nut provided.
IMPORTANT. Do not overtighten the adjustment
bolt as this will distort the motor mounting plate.
Work stop assembly:
A work stop (Fig. 1, Item 7) is included, and is
used to allow workpieces of the same length to
be cut without having to measure each piece
individually. It consists of two parts, the work
stop and the mounting bar. Slide the rod into the
hole inthe edge of the vice and secure with the
supplied thrust screw. Fit the work stop onto
the bar, with the plate facing the saw blade and
temporarily secure with the supplied thrust screw,
taking care not to push it in too far as it may
interfere with the saw blade when it is lowered.
Aligning the saw blade guide:
The metal bandsaw is tted with two adjustable
blade guide assemblies (Figure 1, Item 8).
Thisfunction allows you to align the position of
the blade guides for different workpiece widths.
Should be adjusted to prepare for the workpiece
tobe cut. Do this as follows:
1. Place the workpiece in the vice of the bandsaw
and clamp. ·
2. Align the attachment blade guide unit to
the required position by loosening the hand
screws and positioning the guides as required.
3. Tighten the hand screws.
Aligning the saw blade guide bearings:
This is the most important adjustment on your
saw. It is impossible to achieve a satisfactory
performance from your saw if the blade guides
are not set correctly. The blade guide bearing
for your metal bandsaw has been adjusted and
tested with several test cuts before leaving the
factory to ensure proper alignment. The need for
adjustment should rarely occur if the saw is used
correctly. Ifthe guides do fall out of alignment,
it is extremely important to adjust immediately.
If proper alignment is not maintained, the blade
will not cut straight and if the situation is not
corrected, this will damage the blade.
As guide alignment is a critical factor in the
performance of the saw, it is always best to try
anew blade to see if this is the solution to a poor
cut before you begin adjusting the bearings.
Forexample, if a blade dulls on one side earlier
than the other, it will start to cut crookedly. Simply
replacing the blade should correct this problem
while a more complex guide alignment will not.
If a new blade does not solve the problem,
checkthe blade guides for proper clearance.
Thereshould be 0.0025cm clearance between
a0.06cm thick blade and guide bearing.
Toachieve this clearance adjust as follows
(seeFig 4, Step 7):
1. The inner guide bearing is xed and cannot be
aligned.
2. The outer guide bearing is mounted on an
eccentric bolt and can be aligned.