Toro 77505 Operator's Manual page 60

Replacing the Mower Belt (continued)
9. Use the spring-removal tool to install the idler spring over the deck hook and place
tension on the idler pulley and the mower belt.
10. Tighten the nut securing the wire form to the idler pulley.
Note:
11. Install the pulley covers.
Maintenance: Belt Maintenance
Position the wire form against the idler arm.
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