Wiesenfield WIE-FMO-135S Manuel D'utilisation page 57

Hitch Assembly (Figure 1-1)
Tractor Requirements
Tractor horsepower and hitch category should be within the range noted below.
Tractors outside the horsepower range must not be used. The lower 3-Point arms
must be stabilized to prevent side-to-side movement. Most tractors have sway
blocks or adjustable chains for this purpose.
Horsepower Rating: 30 HP
Hitch Type: 3-Point Cat. I
Rear PTO Speed: 540 RPM
Tractor Hook-up
Refer to Figure 1-2:
1. Be certain tractor draw bar does not interfere. Move draw bar ahead or
remove if required. Draw bar should also be checked for clearance when unit is
raised for the first time.