MacDon 3020 Pull-Type Windrower - Manual (Page 16)

5
OPERATION
PREPARING THE TRACTOR
1. Select proper tractor size:
For 21', 25' or 30' units, the minimum power
required is 40 hp (30 kw) and minimum tractor
weight is 5000 lbs. (2270 kg).
For 36' unit, the minimum power required is 50
hp (38 kw) and minimum tractor weight is 6000
lbs. (2720 kg).
For all sizes, minimum hydraulics required are
1800 psi (12400 kPa) pressure with dual
remote capability.
2. For tractors with variable PTO speed, select
540 or 1000 rpm to match windrower speed
option. See "Preparing the Windrower" in this
section.
3. Adjust tractor drawbar to meet ASAE Standard
specifications as listed below for the PTO
speed to be used (540 or 1000 rpm). An
improperly located drawbar may damage the
universal joints of the implement driveline,
and/or affect machine performance
Be sure the following specifications are met:
(A) 14 in. (356 mm) for 540 rpm.
16 in. (406 mm) for 1000 rpm.
(B) 6 to 12 in. (152 to 305 mm)
(C) 13 to 17 in. (330 to 432 mm)
NOTE: An offset drawbar (D) can be turned
over if required to meet specifications (B) and
(C).
4. Secure the drawbar so the hitch pin hole is
directly below the driveline.
NOTE: If the tractor has a three point hitch,
raise the lower links as high as possible, to
prevent damage.
5. Attach support (E) for hitch chain to suitable
location on tractor drawbar, maximum 6 inches
(150 mm) from hitch pin hole. For 36 ft. unit,
also note item 7.
STANDARD DRAWBAR SPECIFICATIONS
OFFSET TRACTOR DRAWBAR
ATTACH SUPPORT FOR HITCH CHAIN