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fwima/iciiu
Adjustments
6.
Arrange the blades so that they are facing
front to back, parallel with the tractor.
7.
Measure the distance to the ground from the
front tip of the left blade and the rear tip of the
right blade. The measurements should be
equal. If they are not, proceed as follows:
8.
Remove the cotter pins and pins from the hitch
clevises (figure 38). Turn each clevis an equal
number of turns in the same direction, shorten¬
ing the hitch rods to raise the front of the
mower, and lengthening the hitch rods to
lower the front of the mower.
9.
Replace pins through clevises and rear sus¬
pension
arm
and recheck measurements.
When the mower is level replace and spread
cotter pins, and tighten nuts against clevises.
42 INCH MOWER ADJUSTMENTS
The following adjustments are for the 42 inch'
mower. Proper adjustment is necessary for safe
and efficient operation.
Drive Belt Tension Adjustment
If the mower slips or fails to drive, the mower belt
tension may need adjustment. To check .for proper
adjustment, lower the mower, place thePTO lever
in the engaged position. Then measure the gap be¬
tween the rod guide (item A, figure 39) and the set
collar (item B). The gap should be 1/2 - 5/8 inch (13
- 16 mm). If it is not, perform the adjustment as
follows:
1.
Place the PTO lever in the disengaged posi¬
tion.
2.
Loosen the setscrew (item C) in the set collar
(item B).
3.
Move the set collar on the PTO rod slightly for¬
ward to increase the gap, slightly rearward to
decrease the gap.
4.
Tighten setscrew (item C) in verticle position.
Figure 39. 42" Mower Belt Tension Adjustment
5.
Repeat the measurement of the gap and the
adjustment until the gap measures 1/2 - 5/8
inch (13 - 16 mm).
6.
If because of wear the drive belt has stretched
to the point where the flat clutch idler contacts
the front V idler when the PTO is engaged, the
front V idler can be moved forward.
7.
Loosen the nut on V idler and move forward in
slotted hole. Be sure V idler does not rub
against the front hitch. Retighten nut.
Center Arbor Belt Stops
The center arbor belt stops are correctly adjusted
when they are 1/8 inch (3 mm) from the belt when
the PTO is engaged (see figure 40). If they are not
properly adjusted, loosen the nut and lockwasher
holding on the belt stop and move the belt stop to
the proper position. Retighten the nut while hold¬
ing the belt stop to keep it from moving out of posi¬
tion.
Figure 40. Belt Stop Adjustment
Mower Pitch Adjustment
For smoothest mowing results, the 42 inch mower
should be adjusted so that the front tip of the cen¬
ter blade is 1/8 to 1/4 inch (3 to 6 mm) higher than
the rear tips of the left and right blades. To check,
follow these steps:
36
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