John Deere has put their stamp of quality on the first zero turn mower, the all new Z Trak series. This adds to their collection of front-mounted riding lawn mowers and commercial walk-behind mowers.
The front-mounted mower deck design allows operators to cut under overhanging bushes and under fence rails while providing clear visibility of the deck. This allow the operator to perform close cut operations.
These monsters come with 20 hp, 624 cc, four stroke, twin cylinder engines from Kohler. They have heavy duty dry type air filters and Nelson silencers. You wouldn't expect anything less than full pressure lubrication and full flow oil filters from John Deere.
A tandem, variable displacement Hydro-Gear hydraulic piston pump provides ground drive for the mower. Each section of the tandem pump provides oil flow, from a common reservoir, to a single, piston-type Parker Ross 197 cc wheel motor. The tandem piston pump is belt driven directly from a crankshaft-mounted pulley. The piston-type wheel motors were used in place of related gear-type motors because of their efficiency advantage.
The ZTR uses steel hydraulic lines to supply a radiant cooling method for the hydraulic oil. This eliminated the need to use an oil cooler.
Maximum ground travel speed is infinitely variable from zero to 8.2 mph forward and zero to 6 mph in reverse. Mechanical levers located in front of and on either side of the operator
The mower's blades use a PTO drive shaft system that engages and disengages by a Dana Warner electric clutch which is controlled by a switch on the control console.
The Z Trak F620 mower was also designed with ease of service in mind. The mower deck incorporates Deere
Deck sizes on the Z Trak series are 48, 54 and 60 inches in width. Each mower comes with a hood mounted material collection system that holds up to nine bushels.
Source: http://www.ArticlePros.com/author.php?Steven Blades
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