MacDon R80 Rotary Disc - Manual (Page 24)

OPERATION
Form # 169089
22
Model Year - 2009
6.12 HEADER OPERATION
Satisfactory operation of the header in all
situations requires making proper adjustments to
suit various crops and conditions.
Correct operation reduces crop loss and
increases productivity. As well, proper
adjustments and timely maintenance will
increase the length of service you receive from
the machine.
The variables listed below and detailed on the
following pages will affect the performance of
the header. You will quickly become adept at
adjusting the machine to give you the desired
results.
VARIABLE SECTION
Disc Speed 6.12.1
Cutting Height 6.12.2
Header Angle 6.12.3
Header Flotation 6.12.4
Roll Gap/Timing/Alignment 6.12.5
Roll Tension 6.12.6
Forming Shields 6.12.7
Ground Speed 6.12.8
Windrow Forming Rods – Grass Seed 6.12.9
Converging Drums – Grass Seed
6.12.10
Double Windrowing 6.12.11
6.12.1 Disc Speed
The disc header can be used to cut a variety of
crops and for the best cutting results, a range of
disc speeds is recommended for each type of
crop and condition. See table below.
CROP CONDITION DISC RPM
Heavy 2300-2500
Alfalfa
Light 1600-2000
Sudan, Sorghum,
Haygrazer, Timothy
Tall & Stemmy
2300-2500
Dense 2500
Short Grass
Thin 1800-2000
Disc speeds are set and adjusted from the cab
using without shutting down the windrower.
Refer to M150/M200 Self-Propelled Windrower
Operator’s Manual.
6.12.2 Cutting Height
Cutting height is determined by the angle of the
cutterbar/header which can be adjusted with the
center link, either hydraulically or mechanically.
Optional adjustable gauge rollers or skid shoes
are available for 16 ft headers to also provide
different cutting heights. Refer to following
paragraphs.
Cutting height should be adjusted for optimum
cutting performance without allowing excessive
build-up of mud and soil inside the header which
can lead to poor crop flow and increased wear
on cutting components.
6.12.2.1 Gauge Roller Height Adjustment
DANGER
To avoid bodily injury or death from
unexpected start-up or fall of raised
machine; stop engine, remove key and
engage header lift cylinder stops before
going under machine for any reason.
a. Raise header fully, stop engine, and remove
key. Engage header lift cylinder stops.
b. Remove lynch pin and remove adjuster pin (A)
from one side of roller.
(continued next page)
A
B
C
C