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500 & 600 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.
NOTE: PTO shaft angle should not exceed 20° 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.
ALERT: 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 bolts -
#500 - one 3/8" x 1" (gr.8), #600 - two 5/16" x 1" (gr. 8), auger
shear bolt – ¼” x 1" (gr.2). 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) PTO shear yoke should be greased before using the blower
for the first time.
d) Regularly oiling the chain will significantly increase the life of
the chain.
e) Gearbox is open type and need not be greased or lubricated.
f) Hydraulic spout option – grease the swivel arm.