Ariens 939002 ST520 User Manual download pdf (Page 17)

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3. Check attachment clutch lever measurement and

tighten the jam nut on the attachment clutch cable

adjustment barrel when the clutch lever

measurement is in range. Proceed to step 6.

NOTE: If clutch cannot be adjusted to the specified

range with the cable adjustment alone, perform steps

4–5.

4. Remove two screws securing belt cover to unit

and remove belt cover.

5. Adjust the attachment idler position.

a. Loosen attachment idler nut (Figure 21).

b. To increase distance between clutch lever

and handlebar, move the idler towards the

attachment belt.

c. To decrease the distance between the clutch

lever and handlebar, move the idler away

from the attachment belt.

d. Tighten idler adjustment nut.

e. Check clutch lever measurement.

6. Check Brake

When the clutch lever is disengaged, the brake

must contact the attachment belt.

When the clutch lever is engaged, the brake must

be more than 1/16 in. (1.6 mm) away from the

belt and must not contact the frame (Figure 17).

7. Repeat steps 5 – 6 until attachment clutch lever

distance and brake contact are correct.

IMPORTANT: If attachment clutch/brake cannot be

adjusted within tolerances, see your Dealer for repairs.

8. Check belt finger clearance.

With clutch lever engaged, belt fingers should be

positioned as shown in Figure 22. Adjust belt

fingers as necessary.

9. Replace belt cover.

10. Check that auger/impeller stops within 3 seconds

after attachment clutch/impeller brake lever is

released.

TRACTION DRIVE CLUTCH ADJUSTMENT

IMPORTANT: Operating the unit with the traction drive

clutch improperly adjusted will damage the

transmission. Make sure the clutch is adjusted to the

specifications listed below.

To test traction clutch (Figure 15):

1. Without engine running, push unit forward while

slowly moving the traction drive clutch lever

toward the handlebar.

2. Measure distance between lever and handlebar

when the wheels begin to brake. If distance is not

6-1/8 in. - 6-3/4 in. (15.5 cm - 17.1 cm), adjust the

traction clutch.

Figure 16

1.Attachment Clutch Cable

2.Jam Nut

3.Adjustment Barrel

Figure 17

1.Drive Brake

2.Brake Shoe and Pad

1/16 in.

(1.6 mm)

Traction Clutch Lever

OS2490

Figure 18

6-1/8 in. - 6-3/4 in.

(15.5 cm - 17.1 cm)

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 25 26

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Ariens 939002 ST520 User Manual Page 17

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