Swivel Adjustment Spring Compression Adjustment

j)On left side, adjust front swivel using the locking nut behind the swivel until the front chain is tight and all slack is removed from linkage. Do not lift front of deck off 3/4” (19 mm) block. Secure front swivel using locking nut in front of swivel. Repeat for right side.

k)Recheck that the 3/4” (19 mm) blocks fit just snugly under the brackets and that the tension on all the chains are approximately equal. Make sure all chain attachment bolts are tight. Reposition anti-scalp rollers and tighten securely.

12 1/2” (26.7 cm) For 60” Deck

11 1/2” (29.2 cm) For72” Deck

Front of Unit

FIGURE 11

SWIVEL ADJUSTMENT

SPRING COMPRESSION ADJUSTMENT

l)Raise deck lift lever to the 5” (12.7 cm) cutting height position See Figure 9. Adjust spring compression until proper distance is obtained between the two large washers (See Figure 11). Adjustment is made by turning the nut at the front of each spring (clockwise will shorten the spring, counter-clockwise will lengthen the spring). Lock in position with jam nuts.

NOTE: When above adjustments have been made, the front of the deck will be slightly lower than the rear of the deck.

5.2.3Pump Drive Belt Tension.

Self-tensioning - No adjustment necessary.

5.2.4Mule Drive Belt Tension Adjustment. Self-tensioning idler, adjust as follows:

a)Stop engine, wait for all moving parts to stop, and remove key.

b)Check to make sure the center of the bolt head in the center of the spring loaded pulley, on left side engine deck support, is positioned between the centers of the two alignment holes in the left support plate (See Figure 12). It is necessary to adjust the belt tension when the center of the bolt head is at or below the center of the bottom alignment hole.

c)When adjustment is necessary, loosen the idler pulley on the right-hand side so it can move up and down in the slot.

Place a wrench on the 3/8” nut in the center of the spring loaded pulley and apply upward pressure to relieve tension on the spring (a 1/2” drive breaker bar and 9/16 socket works best).

Reposition the adjusting pulley to the bottom of the slot.

NOTE: When installing a new belt, it is necessary to reposition the right adjusting pulley upward in the slot in order to position the center of the spring loaded pulley between the alignment holes.

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