• Be sure to apply the parking brake during
warm-up.
For 5 minutes after the engine start-up, allow the
engine to warm up without applying any load. This is to
allow oil to reach every part of the engine. If load is
applied to the engine without this warm-up period,
problems such as seizure, breakage or premature wear
may appear.
1. Warm-up and transmission oil in
the low temperature range
Hydraulic oil serves as transmission oil. In cold weather
conditions, the oil may be cold with increased viscosity.
This can cause delayed oil circulation or abnormally
low hydraulic pressure for some time after engine start-
up. This, in turn, result in trouble in the hydraulic
system or damage to the hydraulic clutch.
To prevent this from happening warm up the engine at
about 50% of rated rpm according to the following
table.
Ambient temperature
Warm-up time requirement
Higher than 0
℃
(32
℉
)
Approximately 5 minutes
-10 to 0
℃
(14 to 32
℉
)
5 to 10 minutes
-20 to -10
℃
(-4 to 14
℉
)
10 to 15 minutes
Below -20
℃
(-4
℉
)
More than 15 minutes
IMPORTANT :
• Do not operate unless the engine is well
warmed up. If operation is attempted while the
engine is still cold, the hydraulic mechanism
will not function properly and its service life will
be shortened.
• If noises are heard after the hydraulic control
lever has been activated and the implement is
lifting, the hydraulic mechanism is not adjusted
properly. Unless corrected, the unit will be
damaged. Contact your local KUBOTA Dealer
for adjustment.
JUMP STARTING
WARNING
To avoid serious injury or death:
• Keep cigarettes, sparks, and flames away from
the battery.
• If the machine battery is frozen, do not jump
start the engine.
• Do not connect the other end of the negative
jumper cable to the negative terminal of the
machine battery.
When jump starting the engine, observe the following
instructions to start the engine safely:
1. Bring a helper vehicle with a battery of the same
voltage as the disabled machine within easy cable
reach.
IMPORTANT :
• The vehicles must not touch.
2. Apply the parking brakes of both vehicles and put
the shift levers in the neutral position. Shut the
engine off.
3. Put on safety goggles and rubber gloves.
4. Ensure that vent caps are securely in place (if
equipped).
5. Attach the red clamp to the positive (red, (+) or
pos.) terminal of the dead battery and clamp the
other end of the same cable to the positive (red, (+)
or pos.) terminal of the helper battery.
6. Clamp the other cable to the negative (black, (-) or
neg.) terminal of the helper battery.
7. Clamp the other end to the engine block or the
frame of the disabled machine as far from the dead
battery as possible.
8. Start the helper vehicle and let its engine run for a
few moments. Start the disabled machine.
9. Disconnect the jumper cables in the exact reverse
order of attachment (steps 7, 6 and 5).
Connect cables in numerical order.
Disconnect in reverse order after use.
(1) Dead battery
(2) Jumper cables
(3) Engine block or frame
(4) Helper battery
IMPORTANT :
• This machine has a 12 volt negative (-)
ground starting system.
• Use only same voltage for jump starting.
• Use of a higher voltage source on the
machine could result in severe damage to
the machine electrical system.
Use only a matching voltage source when
“jump starting” a low or dead battery.
WARMING UP THE ENGINE
OPERATING THE ENGINE
ZD1211,ZD1221
33
