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Section 4 - ADJUSTMENTS & REPAIR
4.2.1. MOWER DECK ADJUSTMENT (LEVELNESS)
(Continued)
6. Loosen the nuts and bolts that secure both
front and rear deck support brackets on the
high side of deck. Located above each support
bracket, on the top part of the power unit
frame, are three shim plates. Remove the shim
plates on both of the front and rear lift arms and
position plates between the support bracket
and the frame of the power unit. Inserting the
shim plates in this procedure will lower that side
of the deck. Retighten the support bracket nuts
and bolts to 20 to 30 ft. lbs. of torque. See
Figure 4.2.
FIGURE 4.2
7. Move deck lift lever and set the mower
deck to the highest cutting position and
recheck side to side blade tip dimensions. If
both blade tips are within 1/8” of each other
then levelness is correct. If blade tips are still
unlevel repeat steps 1 through 6 and add
another shim plate until deck is level.
FRONT to REAR LEVEL
8. Place machine on a smooth level surface.
9. Check blade tips by rotating the outside
blades until tips are pointing to the front and
rear of deck. Check the measurement of blade
tips to the ground on both blades. Front to rear
measurement should be 1/4” to 3/8” higher in
the rear. If measurement of the blade tips are
not within the previously mentioned
measurement, adjustment should be made.
10. Move deck lift lever and set the mower deck
to the highest cutting position.
11. Place a wooden block under the front and
rear edge of the mower deck.
12. Move deck lift lever and set the mower deck
to a lower cutting position until deck rests on
wooden blocks. This will relieve pressure
from deck lift components.
13. NOTE: The timing rod connects the front
and rear lift arms and maintains the deck in the
same attitude through all heights of cut. Adjust
the deck by loosening and rotating the timing
rod adjusting nuts. Rotate both nuts forward to
lower the rear of the deck or rearward to raise
the rear of the deck. Tighten the nuts securely.
See Figure 10.
14. Raise cutting deck to highest cutting
position and check measurement. If blade
tips are not within correct measurement
repeat steps 8 through 13 until deck is level.
FIGURE 4.2A
POWER UNIT
FRAME
DECK
SUPPORT
BRACKET
SHIM
PLATES
ROTATE NUTS THIS
DIRECTION TO
RAISE REAR OF
MOWER DECK
ROTATE NUTS THIS
DIRECTION TO LOWER
REAR OF MOWER DECK
TIMING ROD
REAR LIFT
ARM
POWER UNIT
FRAME