| John Deere has put a new twist on its | | | | piston pump. The piston pump is driven by a |
| commercial turf care equipment line with the | | | | belt directly from the crankshaft pulley. |
| preamble of its first ever zero-turn radius | | | | These piston type wheel motors provide |
| (ZTR) lawn mower. The new Z Trak F620 mower | | | | greater efficiency than the gear type motors. |
| complements the hydro and mechanical drive | | | | |
| commercial Deere walk-behind mowers and its | | | | The system uses steel hydraulic lines to |
| collection of front-mounted riding lawn | | | | supply a radiant method of cooling the |
| mowers. | | | | hydraulic oil, which eliminates the need for |
| | | | an oil cooler. |
| The design of these new mowers allow | | | | |
| operators to achieve close cut operation by | | | | The operator can move at a variable speed of |
| providing clear visibility of the deck. This | | | | zero to 8.2 mph forward and zero to 6 mph in |
| front mounted deck also allows them to get | | | | reverse. Mechanical levers provide control of |
| under overhanging bushes and under fence | | | | forward, reverse and turning. These are |
| rails. | | | | located in front of and on either side of the |
| | | | operator's seat. |
| Power for the F620 mower comes from a 20 hp, | | | | |
| 624 cc, air-cooled, twin-cylinder, | | | | The mower deck blades utilize a PTO shaft |
| four-stroke Kohler H20S gasoline engine. It | | | | drive system that is engaged and disengaged |
| comes with a Kohler specified heavy-duty, | | | | by a Dana Warner Electric clutch and |
| dry-type replaceable air filter and Nelson | | | | controlled by a switch on the operator |
| silencer. The engine sports overhead valves | | | | control console. |
| and full pressure lubrication with a full | | | | |
| flow replaceable oil filter. | | | | These new beasts are really easy to work on |
| | | | to with a rotate for service system deck. |
| Providing ground drive for the ZTR is a | | | | This RFS allows a tilt of 90 degrees and lock |
| tandem, variable displacement hydraulic | | | | for handy access. |