Yanmar Lx450 - Operate the Implement Control Valve

11-3
11. HYDRAULIC SYSTEM
Lx410/450/490 Operator's Manual
(A) Hydraulic flow control/stop knob
(a) Knob turned counterclockwise:
• increases the rate of drop speed
• unlocks the hydraulic lift
(b) Knob turned clockwise:
• decreases the rate of drop speed
Knob turned clockwise until the knob stops
turning:
• locks the hydraulic lift
■ Implement Control Lever
1. Use the implement control lever to operate the
optional mounted implements.
(A) Implement control lever
2. There are 4 hydraulic quick couplers (color coded
by the rubber plugs).
• The hydraulic quick couplers are located under
the right foot deck.
• The hydraulic quick couplers are used to connect
the tractor's hydraulics to the implement's
hydraulic cylinders.
3. Use the hydraulic quick couplers in pairs: 1 & 2
and 3 & 4.
4. After the couplers and hydraulic lines have been
connected, the attached implement moves in a
direction opposite to the expected direction:
• Interchange the hydraulic line connections
between couplers 1 & 2.
• Interchange the hydraulic line connections
between couplers 3 & 4.
(A) Hydraulic quick couplers
(1) Blue
(2) Green
(3) Red
(4) Yellow
2. Operate the Implement Control
Valve
35 P1080310
(A)
(a)
(b)
450_009_ICLever
(A)
IMPORTANT
● Avoid interchanging the hydraulic lines between
coupler 1 and coupler 3. Contact YOUR LOCAL
YANMAR TRACTOR DEALER for technical
assistance.
● Avoid interchanging hydraulic lines between
coupler 2 and coupler 4. Contact YOUR LOCAL
YANMAR TRACTOR DEALER for technical
assistance.
● When the hydraulic quick couplers are not used,
always leave the color coded rubber plugs
inserted to the hydraulic quick couplers.
• the preceding action prevents damage and
contamination of the female hydraulic quick
couplers
NOTE
● The implement control valve has a float position.
● When the implement control valve is in the float
position, the implement that is lowered to the
operating positions follow the ground contour.
• to use the float position, push the implement
control lever forward beyond the valve detent
position
450110202
(A)
(1) (2)
(4) (3)