Chopper Drive Speeds-Changing

NOTE: When changing chopper speeds make sure to cycle power "ON" and "OFF". The combine will now recognize the new speed range.

causym CAUTION: Shut off engine, set park brake and remove key.

Release chopper drive belt tension.

Pull arm (A) down, outward and up to release belt tension.

Install rubber strap (B) in slot to hold arm in the detensioned belt position.


A-Arm
B-Rubber Strap

H72560
H72540

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Release latch (A) and lift shield (B) over pins (C).

Remove pin (D) from shield (E) and remove shield from bracket (F).

For High Speed (2500 rpm):

Install belt on outside sheave grooves (G), idlers (H) and outside sheave grooves (I).

  • Grain with tough or green straw
  • Larger platforms
For Low Speed (1600 rpm):

NOTE: Less power will be consumed and blade life will be increased with the chopper on low speed.

Install belt on inside sheave grooves (G), idlers (H), and inside sheave grooves (I).

  • Corn
  • Grain with dry straw
  • Smaller platforms

Install chopper shields.

Remove rubber strap from slot in arm and pull arm down to put tension on belt. Check belt idler tension spring to gauge. The washer on rear of spring should be even with gauge. Adjust as required.


A-Latch
B-Shield
C-Pins
D-Quick-Lock Pin
E-Shield
F-Bracket
G-Sheave
H-Idlers
I-Sheave

H72013
H71849
H71850

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