Troy-Bilt How to Remove Chipper Impeller for Models CS4210 and CS4265

Chipper Blade	Lock Washer & Nut
Support Brace
	Impeller
Hex Bolts &	Internal
Saddle Washers	Hex Screw

Support	Flange Nuts
Bracket

Figure 9

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. See Figure 9. Hold the Allen wrench stationary and rotate the box (or socket) wrench to loosen the nut.

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

IMPORTANT: 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.

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

Replacing the Shredder Blade

WARNING: The impeller’s chipper blades are sharp. Wear leather work gloves to protect your hands.

•Stop the engine and make certain that all moving parts have come to a complete stop.

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

•Pivot the shredder screen upward as instructed under the heading Cleaning the Reduction

Chamber.

•Remove the six flange nuts which secure the hopper inlet guide to the 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.

Figure 10

Chute Deflector

Shredder

Blade

Internal

Hex ScrewsFlange

Nuts

Impeller

Inlet

Guide

Weld Studs	Hex Bolt, Lock Washer
	& Flat Washer

Figure 11

•Remove the two internal hex screws which secure the shredder blade to the impeller. See 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. See Figure

11.Hold the Allen wrench stationary and rotate the box (or socket) wrench to loosen the nut.

•Remove the hex bolt, lock washer, and flat washer to completely free the shredder blade.

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.

11