Ningbo Benye 35 Series, Manual, Page: 24 / 61

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adjusted before leaving the manufacturer. It is unnecessary to change them.
Working on farm, the implement should be lifted up before the tractor turns, and lowered
only after it has turned and is running in straight line. The draft control handle does not permit
to lower the implement on hard ground, which could destroy the handle due to high speed
lowering.
The implement mounted on a tractor for a long distance driving, should be locked on the
lifting position by screwing in the shut-off valve adjusting handwheel on the right side of the
lift . The draft and position control handles are put in lowering position (Fig.4-16). The PTO
shaft is in "disengagement" to stop the working of the hydraulic system, and is put back to the
"engagement"
position after the
driving. When a tractor is hitched a
trailer and used for transportation , the
lifting arm should be put in lowering
position and the shut-off valve be
screwed in and locked to prevent from
unnecessary wearing.
Notice to screwing in the shut-off
valve. The valve rod nut is used to
lock after screwing in the shut-off
valve.
When screwing in or
unscrewing off the shut-off valve, the
nut should be loosened and returned to
the outer end to guarantee the valve
screwed in completely.
c. Operation of Draft Control Handle .
Draft control can ensure the
tillage depth and the towing force, mainly used in working on rolling field. Ploughing work
generally adapts this control.
When the draft control handle is put forward, the implement begins to fall down and
penetrate into the earth. After the implement reaches the required depth, the handle moving
has to be stopped and the draft control handle has to be limited by the position-fixed
handwheel (Fig.4--15).The handle is pushed to such a fixed position whenever the falling of
the implement is needed.
d. Operation of Position Control Handle
The distinct feature of the position control is that a implement falls when the position
control handle is pushed forward. The more the handle is pushed , the more the implement falls
down. Against each position of the position control handle , there is a corresponding position
keeping a relevant relation between the implement and the tractor.(Fig.4--15).
The position control is usually used in roto-tilling and other non-farm work, such as
harvesting , lifting bulldozing ,trailer--dumping ,etc. However, it can also be used in ploughing if
the field is comparatively flat and the variation of soil resistance is little. When the implement
has reached the needed depth in ploughing, the position control handle should be limited by a
position-fixed handwheel to keep the implement fall to the same depth every time.
e. Selection of joint point of upper link.
With draft control in controlling tillage depth, the front end of the upper link connects to the