Nortrac XT20 Owner's Manual page 27

2.3.2.1 Battery Start
•
Starting at ambient temperature (above 23°F): Turn the key to the ON position to start the auxiliary and the
control circuit. Then turn the key to the ST position to start the engine. Release the key immediately
after starting (the key will return to the ON position automatically); When you have a safety start
switch, first step on main clutch pedal and then turn the key to start the engine.
•
Preheating start (for models with a preheating circuit)
When starting the tractor in low temperatures (below 23 ° F), use the preheating starting instructions. Put
the throttle handle in the acceleration position, turn the key clockwise to H position and leave it on H for 15–20
seconds. Turn the key to the ST position to start the starter. Release it immediately after starting and the key
will automatically return to the ON position.
Start with a traction tractor: When starting a traction tractor, the traction tractor uses High III or High IV
gearing; for safety, the speed of traction tractor should not be higher than 15km/h.
Note: When starting a traction tractor, once the engine is started, step on main clutch pedal immediately and
throttle down.
2.3.3 Running the Engine
•
After the engine is started, ease up on the throttle immediately to allow the engine run at idle. Check the
engine oil pressure to ensure that the indicator on the oil pressure gauge is in the green zone.
•
After the engine is started, do not run a full-load immediately. The engine should be run at idle to medium
speed to heat the engine. When the coolant temperature rises above 140°F, you can then increase to high
speed and operate at full load capacity.
•
The engine rotary speed and load should be slowly increased or decreased, especially for a recently started
engine; never use the throttle handle to run at high speed.
•
When the tractor is running the engine oil pressure and coolant temperature shall be checked regularly.
During normal operations of the engine, the indicator on the oil pressure gauge and water thermometer
should be in the green zone.
IMPORTANT NOTES: When the engine is running, the indicator on the engine oil pressure gauge should
never be in the red zone. Troubleshoot immediately.
Operation Description
21