CHAPTER 6 ADJUSTMENTS DRIVE BELT TENSION (Figs. 6-1 & 6-2)
A CAUTION BEFORE proceeding to perform any adjust· ments on the Disc Mower, exercise the MAN· DATORY SAFETY SHUTDOWN PROCEDURE (page 8) BEFORE proceeding.
The Drive V -Belt tension, between both Pulleys, should be checked before each day of operation. The tension should be maintained at approximately 5/8" (16 mm) deflection for a hand pressure applied at the midpoint of the Belt span. To adjust the tension, first loosen the Bolts on the Bearing Plate. Then, rotate the outside Nylon-insert Lock Nut to obtain the correct tension. Tap the Tension Plate with a hammer (ifnecessary), in the direction of the Hookbolt. After proper tension is adjusted, tighten the Bearing Plate hardware.
NOTE:
When a V-Belt becomes worn excessively and requires replacement, BE SURE to replace all of the Belts so as to maintain correct Belt lengths.
KNIFE CHANGING (Figs. 6-3, 6-4 & 6-5)
1 - 5/8" (16 mm)
Fig. 6·1
01
This GEHL Disc Mower is equipped with twisted Knives which are designed to provide the lowest cutting level. In general, the Knives can be operated when the Cutterbar is in the flat horizontal position. Both clockwise rotating and counterclockwise rotating Knives are used. Knives are marked with direction of rotation arrows. All GEHL Knives are double-edged and reversible. As the Discs are rotating in opposite directions, next to each other, the direction of rotation of all Knives MUST be followed exactly to insure the best cutting action. The Knife Bolts can be loosened with the wrench provided, after the area around the Nut is cleaned-off. To facilitate Knife assembly or removal, place the Cutterbar in the "Transport" position.
1 - Belt Tension Adjustment Locknut 2 - Bearing Plate Attachment Bolts (2)
Fig. 6·2
Fig. 6·3
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