Справочник Пользователя для Bühler FK331

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74” Allied Snowblower 
 
- 3 -
 
 
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.