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Outboard Cutting Units
1. Remove deck covers. To check belt tension, apply 8 lb.
(35.5 N) force at mid-span of belt and check deflection.
There should be approximately 5/16 in. (7.9 mm)
deflection. If deflection is incorrect, proceed to step 2.
If deflection is correct, proceed to step 3.
2. To tension belts, loosen flange locknut at top of idler
pulley (Fig. 68). Slide pulley against belt until proper
tension is reached. Hold pulley in position and tighten
locknut.
2
Figure 68
1. Idler pulley flange locknut
3. Replace deck covers.
Replacing the Blade Drive
Belts
Position machine on level surface, lower cutting unit to
shop floor, engage parking brake, shut engine off and
remove key from ignition switch.
Front Cutting Unit
Note: To remove center section belt, wing spindle drive
belts must first be removed.
1. Remove deck covers. Lift each wing to release idler
pulley tension and slip belt off pulleys.
2. Loosen jam nut and relieve tension on springs with
tensioner bolt (Fig. 69).
1
2. Drive belts
53
1
10
10
4
5
Figure 69
1. Slide plate
2. Motor mount
3. Drive motor
4. Drive pulley
5. Taper lock bushing
6. Compression spring
7. Spring holder
3. Locate and remove the adjusting screw and nut from the
tool box.
4. Thread the nut onto the adjusting screw and thread the
screw into the rear of the motor mount (Fig. 69).
5. Loosen the (4) capscrews securing the slide plate to the
motor mount (Fig. 69).
6. Remove the (4) flangehead capscrews and washers
securing the motor mount to the deck (Fig. 69).
Note: Do not loosen the adjusting screws.
7. Replace belt(s) as required. Install on pulleys as shown
in figure 70.
8. Position motor mount onto deck while routing belt
around drive pulley (Fig. 69). Be careful not to bend,
twist, kink or damage flexible hydraulic lines.
8
6
7
9
2
11
13
12
8. Slide bar
9. Adjusting screw (rear)
10. Adjusting screws (front)
11. Tensioner bolt
12. Height gauge
13. Center deck spindle
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