How pumps work


The Ultimate Lawn Jockey's Dream

John Deere has put a new twist on itspiston pump. The piston pump is driven by a
commercial turf care equipment line with thebelt directly from the crankshaft pulley.
preamble of its first ever zero-turn radiusThese piston type wheel motors provide
(ZTR) lawn mower. The new Z Trak F620 mowergreater efficiency than the gear type motors.
complements the hydro and mechanical drive
commercial Deere walk-behind mowers and itsThe system uses steel hydraulic lines to
collection of front-mounted riding lawnsupply 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 byThe operator can move at a variable speed of
providing clear visibility of the deck. Thiszero to 8.2 mph forward and zero to 6 mph in
front mounted deck also allows them to getreverse. Mechanical levers provide control of
under overhanging bushes and under fenceforward, 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. Itdrive 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 Nelsoncontrolled by a switch on the operator
silencer. The engine sports overhead valvescontrol  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 aThis RFS allows a tilt of 90 degrees and lock
tandem, variable displacement hydraulicfor handy access.



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