KB21 Service Manual Pub 09-14
40
sSection 30
pressure will change to meet the demand. When several lifting functions are activated simultaneously
the pressure is determined by the heaviest load.
The gear pumps used on Terrain King boom mowers with open center valves are designed to provide
superior performance when more than one function is operated simultaneously. The perception of poor
performance may be representative of poor operating procedures.
In addition, many operators have a tendency to operate the tractor with the throttle “wide open” or in the
All Terrain King boom mowers should be operated at the pto shaft 540rpm setting normally indicated on
the tractor tachometer.
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