Farm King 740, Operator And Parts Manual

Page: 12 / 36

12
Operation - 740, 840 & 840G Snowblower
Operation Instructions
1. Do not operate the snowblower in the fully raised position. The 3-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
snowblower when operating.
4. Run the snowblower at low rpm to check operation before blowing snow.
5. The snowblower has two shear bolts to protect the tractor and snowblower 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 over 600 rpm.
7. Chain Tension: Slack on the lower side of the chain should be 3/8" to 1/2"
8. Lubrication:
- The spout clamps and rings should be periodically lubricated with gun grease.
- PTO shaft universal joints and square shaft slide should be greased daily.
- Regularly oiling the chain will significantly increase the life of the chain.
- The grease fitting on the hydraulic spout swivel arm should be kept lubricated.
- 740 & 840 only: Gearbox is open type and need not be greased
840G only: See Section on refilling for correct oil level. Use any 80-90 gear oil or
multigrade with 80 minimum.
9. Periodically check all bolts for tightness. The bolt holding on the fan and the bearing bolts are
of particular importance.
DANGER
Always stop snowblower for servicing or unplugging. The PTO
should be disengaged before dismounting from the tractor.