MAINTENANCE

5.Move the Adjustable Idler Pulley (A) toward the Gearbox Pulley (B) (to shorten the spring) or away from the Gearbox Pulley (to lengthen the spring) as required.

6.Tighten the bolt in the center of the Adjustable Idler Pulley (A).

7.Check belt tension by moving the Drive Belt Release Handle to the engaged posi- tion and measuring the spring length.

DRIVE CHAIN REMOVAL

1.Turn off tractor engine and lower tiller onto level ground.

2.Remove the three bolts (3), and access cover.

3.Remove the QD hub from the Driven Sprocket by removing the bolts in the hub and putting them in the threaded holes in the hub. Turn each bolt 1/2 turn until the hub is loose and can be removed.

4.Remove the Drive Chain from the Drive Sprocket and remove the Driven Sprocket and Drive Chain together.

Reverse order with the following notes to reinstall the chain.

1.QD hub and Driven Sprocket mating sur- faces must be clean and free of burrs.

2.Push the QD hub on until there is no side play in the rotor.

3.Insert the bolts through the unthreaded holes in the QD hub and into the threaded holes in the Driven Sprocket. Tighten the bolts evenly 1/2 turn at a time to 9 ft. - lbs. torque

DRIVE CHAIN ADJUSTMENT

Check chain tension after the first 40 hours of operation. Then check/adjust chain every 100 hours following initial adjustment. (See Figure 33.)

1.Turn off tractor engine and lower tiller onto level ground.

2.Remove the three bolts (3), and access closure.

3.Check slack of the chain. Measure [A] midway between the sprockets on the top side of the chain. If there is more than 3/4" of slack adjust the chain. Release the main drive belt. Loosen the mounting bolts (5) for gear box, push the gear box mounting assembly toward the Tractor [A], tighten the mounting bolts. Then recheck slack.

FIGURE 33 Drive Chain Adjustment

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