74” Allied Snowblower
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OPERATING INSTRUCTIONS
1. Do not operate the blower in the fully raised position. The three-point
hitch on some tractors raises high enough to cause the PTO shaft to bind.
This can cause damage to the PTO shaft and/or to the hitch and pins.
ALERT: PTO shaft angle should not exceed 20 degrees for
optimum performance and life. Damage may occur to PTO and/or
snowblower if angle becomes more extreme.
2. Depth of cut can be partially controlled by tilting the blower forward or
backward. 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.
3. Adjust the lower link sway chains or blocks on the tractor to restrict side
movement of the blower when operating.
4. Run the blower at low rpm to check operation before blowing snow.
5. The snowblower has two 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 5) Auger shear bolt (1/4" x 1"-Grade 5). Shear bolts should be
fastened with a lock nut or two jam nuts. These bolts must be kept tight to
prevent wear of the bolt and bolt holes.
6. Never run PTO shaft at over 600 rpm.
7. Chain tension: Slack on the lower side of the chain should be 3/8 to ½”.
8. Lubrication:
a) The spout clamps and rings should be periodically lubricated with
gun grease.
b) PTO shaft universal joints and square shaft slide should be greased
daily.
c) Regularly oiling the chain will significantly increase the life of the
chain.
d) The grease fitting on the hydraulic spout swivel arm should be kept
lubricated.
9. Periodically check all bolts for tightness. The bolt holding on the
fan and the bearing bolts are of particular importance.
10. DANGER: Always stop blower for servicing or unplugging. The
PTO should be disengaged before dismounting from the tractor.
11. CAUTION: Always check to see that both ends of the PTO shaft are
securely attached as per instructions every time you are preparing to use
the snowblower.
12. Shear Sprocket: The Shear Sprocket (#52) should be checked at the
beginning of every season to make sure it will spin freely. With time this
sprocket could corrode and seize which will not allow the shear bolt to
break if something jams in the snowblower auger. Clean to loosen if
necessary.
13. When replacing bearings or tightening a loose bearing collar, always
tighten collar in the direction of shaft rotation using a center punch or a
similar tool.