Yanmar Lx490 User Manual

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11. HYDRAULIC SYSTEM
Lx410/450/490 Operator's Manual
■ Use the Position Stop Knob
1. Operate the attached implement.
2. Use the 3-point hitch control lever to establish the
desired working height (distance from the ground)
of the implement.
3. Loosen the position stop knob.
4. Move the position stop knob rearwards until
position stop knob stops against the 3-point hitch
control lever.
5. Tighten the position stop knob to fix on that
particular position.
• Every time the 3-point hitch control lever stops
against the position stop knob, the implement is
lowered to the established working height.
■ Hydraulic Flow Control/Stop Knob
NOTE
Use the position stop knob to:
● Limit the downward movement of the lower links.
● Set a minimum distance between the attached
implements and the ground.
● Lowering the 3-point hitch too fast can lead to
accident or tractor failure.
● Adjust the hydraulic flow control/stop knob:
• the time for lowering the implement from the
highest position to the lowest position, is 2
seconds or longer
● Do not attempt to operate an implement on a
road.
● While the tractor is traveling:
• keep the 3-point hitch control lever in the
raised position
• lock the 3-point hitch control lever with the
position stop knob
• do not fully close the hydraulic flow control/
stop knob
• closing the hydraulic flow control/stop knob
can cause damage to the hydraulic lift
circuit
● During maintenance:
• do not use the hydraulic flow control/stop
knob as a means to keep the implements
raised
• loss of hydraulic pressure may cause the
implement to suddenly drop
• set the implement on solid blocks, or
remove the implement before starting any
maintenance
● The hydraulic flow control/stop knob
determines the speed at which the lower link
is lowered.
IMPORTANT: Avoid damage!
● Avoid attaching a heavy load to the 3-point hitch
when traveling on rough terrain.
• the hydraulic system may be damaged
● Do not operate the 3-point hitch control lever
when the hydraulic flow control/stop knob is
closed.
• the preceding action can cause the
transmission hydraulic oil to overheat
! WARNING

Yanmar Lx490 Specifications

General

Brand	Yanmar
Model	Lx490
Category	Tractor
Language	English