MacDon R85 Rotary Disc 13 Foot Self-Propelled Windrower Header - Manual (Page 88)

OPERATING THE HEADER
6.7 Cutting Height
Cutting height is determined by a combination of the angle of the cutterbar/header and the skid shoe settings.
Cutting height should be adjusted for optimum cutting performance without allowing excessive build-up of mud and
soil 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 Section 6.6 Header Angle,
page 79 .
Optional adjustable skid shoes are available to also provide different cutting heights. Refer to Section 9.1 Kits, page
153 .
• Lowering the skid shoes or decreasing header angle increases the cutting height. This may be desirable in stony
conditions to reduce damage to cutting components. Also, a longer stubble length helps material dry faster.
• Raising the skid shoes 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,
header float should be set as light as possible without causing excessive bouncing.
When the float setting is light, it may be necessary to use a slower ground speed to avoid excessive bouncing and
leaving a ragged cut.
6.7.1 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.
3. Remove bolts (A).
4. Raise or lower skid shoe (B).
5. Reinstall bolts (A).
6. Repeat for skid shoe at opposite end of header.
7. Check header float as described in Section 6.1 Header
Float, page 67 .
8. Adjust header angle to desired working position using
the machine's header angle controls. If angle is not
critical, set it to mid-position. Refer to Section
6.6
Header Angle, page 79 .
Figure 6.16
169455
80
Rev. E