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MQ SP4030 SAW • OPERATION MANUAL — REV. #0 (01/22/09) — PAGE 27
INSTALLING THE BLADE
CAUTION — Improper Torque
An improperly torqued mounting bolt can cause the
inside diameter of the blade, blade shaft, and flange
bushing to quickly wear. This can result in poor cutting
characteristics or premature failure of these parts
requiring replacement and machine “downtime.”
1
2
1. 12 In. (30.48 cm)
2. 125-175 lbs (56.7-79.4 Kg)
Figure 12. Blade Wrench
125-175 lbs. (56.7 -79.4 Kg) of weight applied
to the end of the blade wrench will provide
125-175 ft. lbs. (169.5 -237.3 Nm) of torque
to the blade mounting bolt (Figure 12).
6. Lower the blade to the ground surface (Figure 13, Item
A) to prevent blade from spinning and tighten the
mounting bolt to 125-175 ft. lbs. (169.5 -237.3 Nm) of
torque (Figure13, Item B).
Stacking Blades for Wide Cuts
Combining, or stacking blades together to make wide cuts
requires an optional bushing extension kit.
■
Kit #18501 allows blade stacking from .375" to .75"
thickness.
■
Kit #18502 allows blade stacking from .75" to 1.125"
thickness.
1. Remove existing blade (see previous section).
2. Replace the standard flange bushing, outer flange, and
mounting bolt that came with the saw with the extended
bolt and bushing and the new outer flange supplied
with the kit. Remember that the mounting bolt for the
right side of the saw has a left-hand thread while the
mounting bolt for the left side of the saw has a right-
hand thread.
3. Insert the bushing and mounting bolt through the outer
flange and stack of blades. Spacers are required
between blades when stacking multiple blades. The
longer bushing and bolt allow blades to be stacked
together while maintaining proper alignment of flange
bushing into blade shaft.
4. Align flange pin through the stack of blades into the
inner flange.
5. Tighten the 5/8" mounting bolt to 125-175 ft. lbs. of
torque.
A
B
Figure 13. Torque Flange Bolt
WARNING
NEVER attempt to stack blades beyond the capacity
of the kits described here. NEVER operate the saw
without blade guards in place.