It is important to test whether the shaft has been sufficiently shortened to protect against “bottoming out” by:
Disconnecting the input PTO shaft and fully compress the two halves of the shaft together
Placing a piece of coloured tape on the inner shield 5mm (3/16”) away from the end of the outer shield
Reattach the PTO shaft between the tractor and machine with the machine placed on the ground.
Slowly raise the mower without the PTO shaft engaged
If at any point the outer shield end becomes any closer than 50mm (2”) away from the placed tape,
then shorten the PTO shaft and then test again
To effectively shorten and modify the input shaft; see Section 3.3.3.
NOTE: When determining the minimum lengths and during subsequent verifications, it is important to bear in
mind that ground subsidence may cause further reduction or increase in the distance between the
PTO’s.
3.3.3 Modifying & Shortening The Input PTO Shaft
Bondioli & Pavesi, the manufacturer of the PTO shafts which comes with all Multicut machines do not
recommend modifications to its products. This is further supported by Spearhead.
NOTE: Bondioli & Pavesi and Spearhead declines all responsibility for damage and/or injury caused by
modifying ANY of the power take-off shafts on Multicut machines in any other way than described in this manual.
If you are unsure of the procedure, or need additional assistance, please contact your local Spearhead
dealer, qualified service centre or Spearhead.
Equipment Required
• Tape measure
• Marker pen or plastic scriber
• Hacksaw or angle grinder (with cutting disc)
• Flat hand file or angle grinder (with sanding disc)
• NLGI #2 Molybdenum Disulphide grease with paint brush/distributor
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