Commercial Snowblower
OPERATING INSTRUCTIONS
1. HYDRAULIC DRIVE: All snowblower hydraulic blocks are set at the factory
for a 2800 - 3000 psi system. Refer to the section on the hydraulic control
block if your system does not fall into this range.
2. ALL: Depth of the cut can be partially controlled by tilting the snowblower
forward or backward.
3. PTO DRIVE: Adjust the top link of the tractor hitch so the snowblower is just
slightly tilted back when resting on the ground. CAUTION: Excessive
backward tilt may cause the “U” joints to flutter resulting in PTO shear bolt
failure.
4. PTO DRIVE: The inside holes on the hitch are spaced to fit a category 2
quick hitch using the pins supplied. The hitch will also fit category 2 three
point arms or category 3 if you add bushings.
5. PTO DRIVE: Adjust the lower link sway chains or blocks on the tractor to
restrict movement of the blower when operating.
6. ALL: All snowblowers have a hydraulic control spout and spout deflector.
Refer to the hydraulic control block section. The pressure to the chute control
is regulated by the two torque limit controls (#13b and #13c). Each controls
the hydraulic pressure in one direction. They are set at the factory to about
2 ½ turns. If the pressure is too low, the chute won’t turn. If the pressure is
too high you could damage the teeth on the spout control ring. To adjust the
pressure, you loosen the lock nut on the modulating valve and back off the
adjusting screw till the screw turns freely by hand. Turn the screw in till you
feel it making contact and turn in 2 ½ turns. Start with this setting to do any
fine adjustment if necessary. Pressure should not go over 1000 psi.
The deflector cylinder pressure is regulated by no-load control (#13a).
It is set at the factory to about 2 turns. If pressure is too low it will not
operate. Excess heat will be generated if it is set too high. Adjust if
necessary as per previous paragraph. Operating pressure should be about
700 psi.
7. ALL: Run the snowblower at low rpm to check operation before blowing
snow.
8. PTO DRIVE: The blower has three shear bolts to protect the tractor and
blower in case a large object enters the blower. PTO shear bolt – two 5/16” x
1” (grade 8); auger shear bolt – 5/16” x 1 ¼” (grade 5). Shear bolts should be
fastened with a lock nut or two jam nuts. These bolts must be tight to prevent
wear of the bolts and bolt holes.
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9. PTO DRIVE: Never run PTO at over 600 rpm.