Belt Replacement; Adjustments; Belt Tension Adjustment; Skid Shoe Adjustment - Simplicity 1691521 Operator's Manual

BELT REPLACEMENT

1. Loosen the drive belt by turning the handle (C, Figure
5).
2. Remove the belt from the pulley (D, Figure 4) inside
the snowthrower and remove the snowthrower from
the tractor.
3. Loosen the lockwashers and nuts securing two belt
stops on idler pulleys (A and E, Figure 4).
4. Install new belt as shown.
5. Retighten belt stops and adjust the belt tension.

ADJUSTMENTS

Belt Tension Adjustment

See Figure 5.
1. With the snowthrower drive belt installed, trunion (A)
should be between marks on spring tension bracket
(B) for correct belt tension.
2. Turn belt tension handle (C) to move trunion forward
or rearward until within between marks.
3. If trunion cannot be placed between marks, loosen
capscrew (D) and reposition idler pulley (E) as neces-
sary. The pivot bracket (F) should be perpendicular to
snowthrower hitch. Retighten capscrew (D) and
repeat step 2.

Skid Shoe Adjustment

On smooth surfaces such as concrete or asphalt, the
scraper bar should scrape the surface. On surfaces
such as gravel, the scraper bar should be set high
enough so that it will not pick up debris.
1. Loosen the nuts securing the skid shoes (see Figure
6).
2. Raise or lower the scraper bar to the desired height.
Use wood blocks to hold the snowthrower in position.
3. Set the skid shoes so that they are in contact with the
ground and tighten the skid shoe nuts.
Figure 6. Adjusting Skid Shoes
Belt Replacement / Adjustment
Figure 4. Belt Routing
A. V-Pulley
B. Idler Pulley
C. Electric Clutch Pulley (V-pulley)
D. Snowthrower Pulley (V-pulley)
E. Idler Pulley
Figure 5. Adjusting Belt Tension
A. Trunion
B. Spring Tension Bracket
C. Handle
7
F
D. Capscrew
E. Idler Pulley
F. Pivot Bracket