Cutting Height; Adjusting Gauge Roller Height; Adjusting The Skid Shoe Height - MacDon R85 Operator's Manual

6.7 Cutting Height

Cutting height is determined by a combination of the angle of the cutterbar/header and the gauge roller or skid
shoe settings. Cutting height should be adjusted for optimum cutting performance without excessive mud build-up
inside the header that can lead to poor crop flow and increased wear on cutting components. Choose an angle that
maximizes performance for your crop and field conditions. Refer to
Optional adjustable gauge rollers or skid shoes are also available to provide different cutting heights. Refer to:
•
9.1 Kits, page 169
•
6.7.1 Adjusting Gauge Roller Height , page 78
•
6.7.2 Adjusting the Skid Shoe Height, page 78
Lowering the skid shoes/gauge rollers or decreasing header angle increases the cutting height. This may reduce
damage to cutting components in stony conditions. Also, a longer stubble length helps material dry faster.
Raising the skid shoes/gauge rollers and increasing header angle allows the crop to be cut lower.
To minimize damage to cutterbar components, scooping soil, or soil build-up at the cutterbar in damp conditions, set
header float as light as possible without excessive bouncing.
A light float setting may require reduced ground speeds to avoid excess bouncing and a ragged cut.

6.7.1 Adjusting Gauge Roller Height

DANGER
To avoid bodily injury or death from unexpected start-up or fall of raised machine: stop engine, remove
key, and engage safety props before going under machine for any reason.
1. Raise header fully, stop engine, and remove key.
2. Engage header safety props.
3. Remove lynch pin and remove adjuster pin (A) from
one side of the roller.
4. Hold roller and remove lynch pin and adjuster pin (A)
from other side. Position roller at desired position and
reinstall adjuster pins (A). Secure with lynch pins.
5. Repeat for roller at opposite end of header.
6. Adjust mud bar (B) by loosening nuts (C) and retighten
to maintain minimum clearance between mud bar
and roller.

6.7.2 Adjusting the Skid Shoe Height

DANGER
To avoid bodily injury or death from unexpected start-up or fall of raised machine: stop engine, remove
key, and engage safety props before going under machine for any reason.
1. Raise header fully, stop engine, and remove key.
2. Engage header safety props.
169457
OPERATING THE HEADER
Figure 6.18: Gauge Roller
78
6.6 Header Angle, page 77.
Revision G