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Reduced maintenance expense because of fewer complaints related to hard starting, vapor lock, misfire, run-on, or fouled spark plugs.Fuel usage can be expected to be about 10 percent less than with a similar carbureted tractor. EFI precisely meters fuel to each engine cylinder.The mechanical throttle cable is replaced by an electric linkage that is not susceptible to wear or freezing. No choke-related problems since the choke is eliminated, thus ensuring operator confidence and quick starts, even in cold ambient temperatures (snow blower use).No carburetor adjustments are needed at altitude. Flooding by unnecessary choking of a warm engine is eliminated. EFI automatically meters fuel, including the extra fuel needed to start a cold engine. Fast, reliable starts are routine just like with a modern automobile.While snow blowing, maintaining the fan speed enables consistent snow placement.
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#Disk inventory x discontinued full
Cut quality is improved, especially in difficult mowing conditions, because the electronic throttle control keeps the mower blades turning at full speed, delivering optimal cut quality and dispersion of clippings.Mowing time is reduced as the electronic throttle control keeps the engine operating at optimum speed, responding instantaneously as the mower transitions from light to heavy mowing.The advanced engine features provide the following advantages:Įlectronic throttle control improves performance. Starts are quick and easy, even for inexperienced operators. For cold starts, the actuator closes the valve, making starting the engine easier - no choke lever is needed. No choke control is needed for the EFI engine because a servo motor controls the intake air butterfly valve and the air stream. X590 Tractor's electronic throttle control is a first in the mowing industry.Įlectronic fuel injection and electronic throttle control.Some torque rise remains to warn the operator before the engine stalls.Mechanical governors cannot respond fast enough to maintain a constant engine speed.Ground speed and mower blade-tip speed remain constant, even in heavy-grass conditions, to improve productivity and cut quality.Electronic throttle control works in conjunction with EFI to electronically adjust the supply of fuel air mixture, to increase torque as needed to maintain engine operating speed under load.Fuel usage is reduced up to 10 percent compared to a carbureted engine.It simplifies engine starts and warm-up by eliminating the need for the operator to use a choke.EFI meters the correct amount of fuel directly into each engine cylinder for all operating conditions.Solenoid-shift starter for easy starts, even in cold weather.The tractor is powered by a John Deere iTorque power system, a combination of engine features and an exclusive hood design providing superior lugging ability, even cooling, and durability.