Operating Procedures
Ground Speed
Operating Procedures 425HD-MD/masterdoc101602 4-5
4
To turn to the right: Push the left control lever forward slowly, and maintain the
right control lever in neutral position.
To turn to the left: Push the right control lever forward slowly, and maintain the left
control lever in neutral position.
To obtain a zero turn radius (ZTR) to the right: Push the left control lever forward
slowly, while simultaneously pulling the right control lever backward slowly.
To obtain a zero turn radius (ZTR) to the left: Push the right control lever forward
slowly, while simultaneously pulling the left control lever backward slowly.
To stop: Return both control levers to the neutral position.
To change directions: Slowly return both control levers to the neutral position, and
allow the Articulator to slow to a stop. Then slowly move the control levers into the
appropriate positions to travel in the desired direction.
NOTE: When the control levers are released, they automatically return to the neu-
tral position, stopping all motion of the Articulator.
4.4 Ground Speed
The Model 425HD-MD Articulator is designed to cut cleanly and efficiently at relatively
high ground speeds. Reduced ground speed is required when operating on severe con-
tours, when cutting excessively tall, wet, or thick grass, or when traveling up or down
large or steep hills. Maximum ground speed is intended for transport to and from the cut
site only, and should not be attempted during any cutting operation.
Attempting to change directions at high ground speed, whether cutting or transporting,
can cause damage to the turf, especially in wet conditions. Direction changes should be
made by slowing to a near or complete stop (returning the control levers to neutral posi-
tion), and slowly changing the control lever positions to begin travel in the desired direc-
tion. This prevents turf damage, as well as prolonging equipment life and promoting safer
operation of the Articulator.
4.5 Mower Height Adjustment
To adjust the mower deck height, use the deck height adjustment control stick (located to
the right of the operator seat, directly behind the control box). Pulling the lever toward the
rear of the unit will relieve pressure to the cylinder allow you to adjust the height of the
deck by moving the spacers located on the control rod arm immediately to the left of the
operator. When the proper adjustments are made, return the control rod arm back into the
holder and reset pressure to the cylinder with the control stick.
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