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Flail Condition & Replacement
Over time, the flails on your machine will wear, and performance will deteriorate. It is important that the flails are kept in good condition to
ensure a long service life of your machine. Flails should be replaced when either; 3mm has worn off the end of the flail; the flail has become blunt
or damaged; flails are missing.
When replacing flails the diametrically opposite flail should be replaced at the same time in order to maintain rotor balance, When flails are fitted
in pairs, (e.g. Y Grass Flails), both must be replaced at the same time. As flails are fitted in a spiral pattern care must be taken to replace the
correct diametrically opposite flails. In addition, visually inspect the mounting bolts and bushes of flails, if applicable. These are all wearing part
and normally should be replaced at the same time as the flails.
Bushes and mounting bolts should also be replaced if excessively worn; for bushes this will be once 0.5mm has worn off the inside or outside
diameter (or if there is uneven wear on the bushes), and for bolts this will be once 1mm has worn off the outside diameter (or if there is uneven
wear on the mounting bolt).
Storage & Winterisation
For extended periods of storage, it is advisable that the machine be first cleaned thoroughly and fully lubricated.
Fuel should either be fully drained from the system, or have a suitable fuel stabilizer added and run through the entire fueling system before
being parked for extended periods.
Troubleshooting
Problem
Irregular Cut
Excessive Machine Noise
Excessive Engine Noise
Excessive Belt Noise
Vibration
Excessive movement of drawbar
Bearings tight or overheating
Belts Overheating
Possible Causes
Worn, bent or broken flails
RPM too low
Machine not level to the ground
Clogged material caused by excessive forward
speed
Unbalanced Rotor
Loose bolts
Damaged components
Worn muffler
Engine problems
Belts slipping
Belts worn
Worn, bent or broken flails
Rotor out of balance
Worn rotor bearings
Worn drawbar pins
Loose drawbar hand screws
Bearings dirty or ungreased
Bearings worn to excess
Belts slipping on pulleys
Flails contacting the ground
Working speed too high
8
English
Remedies
Inspect & replace & damaged flails
Always use maximum throttle
Check & adjust tyre pressures
Reduce forward speed
Check flails & replace any damaged flails. If
vibration persists, see "vibration" below
Check bolts & tighten as necessary
Repair or replace
repair or replace
Consult authorized dealer or Chapman
Machinery
Adjust belt tensioner
Replace belts
Inspect and replace as necessary
Balance or replace rotor
Replace rotor bearings
Replace drawbar pins
Tighten hand screws
Clean & grease bearings
Replace bearings
Tension belts
Raise cutting height
Reduce forward speed
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