Troy-Bilt 410, 420 Sharpening Or Replacing The Shredder Blade, Storing Your Chipper Shredder

2.Pivot the shredder screen upward as instructed under the heading Cleaning the Reduction Chamber.

3.a. Remove the chipper chute support brace from the frame by removing the two hex bolts and saddle washers which secure it. See Figure 9.

b.Remove the chipper chute by removing three hex nuts and washers which secure it to the impeller housing. See Figure 9.

•Rotate the impeller by hand until one of the two chipper blades is visible through the impeller housing opening.

c.Remove the blade by removing the internal hex screws, lock washers and hex nuts which secure it to the impeller. Retain the hardware.

NOTE: Use a 3/16” hex key (Allen) wrench on the outside of the blade and a 1/2” box (or socket) wrench on the inside of the impeller. Hold the Allen wrench stationary and rotate the box (or socket) wrench to loosen the nut.

4.Install a replacement blade (Part No. 742-0544) with the hardware removed earlier or sharpen.

IMPORTANT: When sharpening the blade, protect hands by using gloves. Follow the original angle of grind and make sure to remove an equal amount from each blade.

5.To replace the other blade, rotate the impeller to expose the second blade and repeat the steps above.

NOTE: Make certain blades are reassembled with the sharp edge outward (toward the chipper chute). Torque hardware to between 20 ft.-lbs and 25 ft.-lbs.

Sharpening Or Replacing The Shredder Blade

WARNING: The shredder blade is sharp. Wear leather work gloves to protect your hands.

1.Stop engine,disconnect spark plug, and make certain that all moving parts have come to a complete stop.

2.Remove the two flange nuts (and hex bolts) which secure the hopper support bracket to the impeller housing. Retain the hardware. See Figure 10.

3.Pivot the shredder screen upward as instructed under the heading Cleaning the Reduction Chamber.

4.a. Remove six flange nuts which secure hopper inlet guide to impeller housing. See Figure 11.

•Carefully separate the hopper assembly from the impeller housing and set it aside.

•Insert a piece of wood into the chute deflector opening to stabilize the impeller and prevent it from rotating when removing the shredder blade.

b.Remove the two internal hex screws, hex lock nuts, and lock washers which secure the shredder blade to the impeller. See Figure 11.

Figure 10

C B

A

Figure 11

NOTE: Use a 3/16” hex key (Allen) wrench on the outside of the shredder blade and a 1/2” box (or socket) wrench on the inside of the shredder blade. Hold the Allen wrench stationary and rotate the box (or socket) wrench to loosen the nut.

c.Remove the hex bolt, lock washer, and flat washer to completely free shredder blade. See Figure 11.

IMPORTANT: If sharpening the blade for reuse, follow the original angle of grind as a guide. Make certain each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. Remove metal from the heavy side until it is balanced evenly.

IMPORTANT: When reassembling the blade, tighten center bolt to between 45 ft.-lbs and 60 ft.-lbs and the two out bolts to between 20 ft.-lbs and 25 ft.-lbs.

Storing Your Chipper Shredder

1.Clean the equipment thoroughly.

2.Wipe equipment with an oiled rag to prevent rust.

3.Refer to engine manual for correct engine storage instructions

4.Store unit in a clean, dry area. Do not store next to corrosive materials such as fertilizer.

5

Maintaining

Your Chipper

Shredder

WARNING

The shredder blade is sharp. Wear leather work gloves to protect your hands.

IMPORTANT

Make certain chipper blades are reassem- bled with the sharp edge outward (toward the chipper chute). Torque hardware to between 20 ft.-lbs and 25 ft.-lbs.

IMPORTANT

When reassembling the shredder blade, tighten center bolt to between

45ft.-lbs and 60 ft.-lbs and the two out bolts to between 20 ft.-lbs and

25ft.-lbs.

11