8-6
8. OPERATE THE TRACTOR
Lx410/450/490 Operator's Manual
■ Warm Up Transmission Hydraulic Oil in
a Cold Weather Situation
1. Warm up for 5 minutes after starting the engine.
2. Operate any implement on the tractor only after
warming up the engine.
3. Using the implements while the engine is still cold
(or not fully warmed up), problems such as
seizure, breakage or premature wear can occur.
4. The engine oil is distributed through out the
engine during warming up.
5. The hydraulic oil also functions as the
transmission oil.
6. In cold weather, the cold oil has a higher
viscosity, making oil circulation sluggish.
• The hydraulic pressure does not smoothly rise
after engine start up.
• The preceding action can cause a problem with
the hydraulic system.
7. To prevent the preceding problem:
• Pre-warm the engine at about 50% of the rated
Revolutions Per Minute (rpm) for a period of time,
as specified in the table below:
(A) Forward/N/reverse lever
(B) Parking brake lock lever
(C) Power Take Off (PTO) switch
(D) Range gear lever
(E) Primary gear lever
Before warming up the engine, ensure:
● The parking brake lock lever is locked.
● All the levers in the N (neutral) positions.
● Power Take Off (PTO) switch is in the OFF
position.
Ambient Temperature
(°F (°C))
Required warm-up time
(min.)
Over 14 (-10) Approximately 5
5 to 14 (-15 to -10) 5 to 10
-4 to 5 (-20 to -15) 10 to 20
Lower than -4 (-20) Longer than 20
IMPORTANT
● Warm up the engine of the tractor before
operating any implements.
P5-3 top view_2
(A)
(B)
(D)
(C)
(E)
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