Bühler FK348 User Manual

                                     

                                          

Commercial Snowblower 

 
                          ASSEMBLY INSTRUCTIONS – cont’d. 
 
b)   

Using tape or a bright colored marking pen, mark on the outer  

  

 

shields the position where the shaft is completely pushed together 

     

and the position where you have a 4” overlap.  Watch these marks 

     

when moving the blower through all possible operating angles to 

      

see that the PTO shaft stays within this range. 

 
c)   

With the engine on the tractor shut off, attach the PTO shaft.  The 

  

 

tractor end has a standard 6-spline end with a spring loaded locking 

  

 

collar.  The snowblower end has a clamp-style yoke with a 3/8” key 

     

way.  Slide the yoke onto the gearbox shaft with the 3/8” key (#67) 

  

 

supplied.  Lock the yoke in place with the ½” x 3” bolt (#39) and 

  

 

lock nut (#40) fitted through the groove in the gearbox shaft.  After 

  

 

tightening the bolt, insert and tighten the 3/8” socket set screw 

     

(#74) supplied.   

 
Caution:  Always check to see that both ends of the PTO shaft are securely 
       

attached every time the Snowblower is used.  This should always 

     

be done with the tractor engine off. 

 
d)   

Check that the PTO shaft does not bottom or separate with the 

  

 

blower in the extreme high and low positions.  A longer optional 

  

 

PTO shaft is available if the standard shaft is too short.  Check for 

     

free movement of all parts in various raised positions; particularly 

  

 

the PTO shaft. 

e)  

NOTE:  Excessive U-joint wear and shear pin failure may result if 

     

the tractor PTO angle exceeds 20º.  The drawing below gives an 

  

 

approximate way to check this angle.  With the PTO half extended, 

  

 

the tractor output should not be over 32 inches high.  Use 34 inches 

     

if the PTO is nearly compressed. 

 

 

 

 

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