26
REASONS SLIP CLUTCHES FAIL
*
DULL BLADES
*
When the blades become dull, the cutting or chipping effect is lost; (dull blades become hammers
and will not cut). The dull blades require more torque to hammer into and through the material. The
Tree Cutter is not designed to hammer through material. This hammering action will destroy the
machine and slip clutch from increased shock load and increased torque required from dull blades.
NEVER
operate the unit with dull or damaged blades.
*
GROUND SPEED
*
Excessive ground speed increases the torque load to the slip clutch. As more material is fed into the
cutting chamber; more torque is required to pass through the slip clutch. NOTE: A good measure for
proper ground speed is to watch the tractor tachometer, if the tractor engine loses speed (RPM drop)
reduce your ground speed to regain your engine speed
. NEVER
reduce your ground speed by the
engine throttle; (select a lower gear to reduce ground speed).
*
DECK ADJUSTMENT
*
Improper deck adjustment or deck attitude will increase the torque load to the clutch.
See proper
deck adjustment in this manual.
The front of the cutter deck should be adjusted 1 inch lower than the
rear of the deck, this allows the material to be cut on the front side of the blade arc. If the deck were
adjusted with the front higher than the rear, all the material will be cut twice.
NEVER
lower cutter
deck down onto material. Keep cutter deck down on the ground at cutting height.
*
ENGINE SPEED
*
Your tractor engine is designed to operate at a continuous speed to produce a given PTO speed (540
or 1000 RPM). Failure to keep the tractor engine at the proper speed will cause the Tree Cutter to be
under powered; thus increasing the torque load to the slip clutch. Refer to tractor owners manual for
proper tachometer setting to deliver the proper PTO speed to the cutter.
NEVER
operate your cutter
at less than manufactures recommended engine speed for proper PTO output speed. The Tree Cutter
is designed to operate at a certain PTO speed (NOT BOTH). Refer to model number or call Brown
Mfg. Corp. if you have questions about your Tree Cutter design speed.
SLIP CLUTCH FAILURE IS NOT COVERED UNDER WARRANTY
