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What’s new in compact tractors from John Deere
Grow Green, Mannheim, Germany, 28 & 29 July 2008
John Deere’s large chassis 4020 Series compact tractors are now available with new Stage 3a engines, which have been designed to meet the latest emissions regulations while still maintaining excellent fuel economy.
In addition, power ratings have increased from 47 to 49hp on the 4320, 52 to 61hp on the 4520 and 62 to 66hp on the 4720, at 2400rpm rated speed. Both the 4520 and 4720 models are also equipped with an intercooler to provide extra torque for more demanding pto applications such as mowing and wood chipping.
The tractors’ new eThrottle makes driving the tractor as easy as driving a car – just push the pedal and both forward speed and engine rpm increase. This feature reduces noise and fuel consumption, and is particularly convenient for general transport and trailer work.
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A new ‘drive-over’ mid-mounted rotary mower deck option is now available for all three of John Deere’s 3020 Series mid-chassis compact tractors, the 31hp 3320, 36hp 3520 and 42hp 3720 models. |  |  |
Similar to the design used on the company’s small chassis models, the 7-Iron 1.8m (72in) AutoConnect side discharge deck allows the operator to simply lock the deck in place and attached the driveline automatically from the tractor seat, without the need to crawl under the tractor to connect the pto. Height of cut adjustment has also been made easier, with 13 positions available from 38 to 203mm (1.5 to 8in) in 12.7mm (0.5in) increments.
These heavy duty 7-Iron commercial mower decks are made of 7-gauge steel, the thickest in the industry. They feature a deep design with increased airflow so that more grass can be cut more easily, especially in heavy or wet conditions, and the operator can mow at faster speeds. Material build-up and clumping are reduced, thus greatly improving performance and cut quality.
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