Toro 30551 Operator's Manual page 13

6. Mount the bottom of the knee link to the deck bracket
with a shoulder bolt and locknut. Use the heavy rate
extension on the left-hand side (large diameter spring
wire) and the light rate extension spring on the right,
discharge side (small diameter spring wire).
7. Align the slotted holes in the spring cover (slot toward
the bottom) with the mounting bracket holes. Insert the
lock pin assemblies into the bracket holes and secure
each to the bracket with the self-tapping screws (Fig. 9).
Torque the screws to 20 ft.-lb. (27 N⋅m).
4
3
2
8
11
12
10
Figure 9
1. Mounting bracket
2. Spring cover
3. Lock pin assembly
4. Self-tapping screw
5. Extension spring
6. Top spring end
7. Bottom spring end
1
9
6
5
7
13
8. Clevis pin
9. Hairpin cotter
10. Knee link
11. Shoulder bolt
12. Spring end stop
13. Locknut (2)
13
Figure 10
1. Wide part of knee link
8. From the bottom, insert the spring and top spring end
into the spring cover. Select a hole that matches the
cutter deck height-of-cut setting; i.e., the top cover hole
matches the highest height setting, the bottom cover
hole the lowest, etc. Align the top spring end hole with
the selected spring cover holes and insert the clevis pin
to secure the spring inside the cover (Fig. 9). Secure the
clevis pin with a hairpin cotter.
9. Remove the blocks from under the cutting unit. Make
the final counterbalance adjustments under actual
cutting conditions; refer to Adjusting the Tension
Spring, page 17.
Figure 11
1. Weight transfer spring
2. Spring end plate
3. Knee link bracket
1
1
2
3
4
5
4. Deck bracket
5. Deck frame