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Maintenance Section 4-21
MAINTENANCE
63” BOOM FLAIL KNIFE REPLACEMENT
1 – If knives are damaged or badly worn, they will need to be replaced as a set.
Replacing a single knife can cause severe vibration and possible damage to
the mower.
2 – Assemble knives, clevis, bolts and nuts as shown in part section of manual.
3 – Install locking hex nut so that the flat face of nut is towards the knife.
4 – apply loctite “271” to threads.
5 – Torque nut to 54 FT. LBS.
DO NOT re-use the locking hex nuts for mounting the knives. If hex
nut become loose, or require removal for knife replacement or any
other reason, they must be discarded and replaced with new nuts.
Knives should not be welded on for any reason.
50” BOOM FLAIL KNIFE REPLACEMENT
(Old style cutter shaft)
1 – If knives are damaged or badly worn, they will need to be replaced as a set.
Replacing a single knife can cause severe vibration and possible damage to
the mower.
2 – Assemble knives, bushings, collars, bolts and nuts as shown in part section of
manual.
3 – Install locking hex nut so that the flat face of nut is towards the knife.
4 – apply loctite “271” to threads.
5 – Torque nut to 108 FT. LBS.
DO NOT re-use the locking hex nuts for mounting the knives. If hex
nut become loose, or require removal for knife replacement or any
other reason, they must be discarded and replaced with new nuts.
Knives should not be welded on for any reason.