National Mower HYDRO HYD70OM-8/99 - Manual (Page 11)

NATIONAL HYDRO 70" TRIPLEX ®
11
5—GENERAL INFORMATION
5.1—ENGINE
Your vehicle is powered by twin cylinder, 4
cycle Briggs & Stratton Vanguard engine which uses
unleaded gasoline, 85 octane minimum. DO NOT MIX
OIL WITH GASOLINE! Engine speed is controlled by
means of a throttle lever mounted on the left side of
console panel.
A separate Engine Manual, prepared by the
engine manufacturer is supplied. Study the manual
carefully until you are familiar with the maintenance,
operation, adjustment and repair of your equipment.
Proper attention to the engine manufacturer’s directions
will assure maximum service life of the engine and
highest operating efficiency.
5.2—TRACTION DRIVE TRAIN
Power from the engine is transmitted to the
variable displacement pump through a drive coupling.
The pump supplies hydraulic fluid to wheel motors. The
wheel motors provide the differential action required in
turns.
5.3—REEL DRIVE
Power to the reels is transmitted from the engine
to a jackshaft mounted under the engine through a
spring loaded belt drive. Three separate belts trans-mit
the power from the jackshaft to the mowers.
5.4 IGNITION SWITCH
The reel control lever must be in the disengage
position and the traction control pedal is in the neutral
position before starting engine. Insert key in switch,
turn clockwise as far as it will go to start engine, then
release.
a. Do not hold key in “ON” position more than
30 seconds at a time.
b. Key should be removed when tractor is not
in use to prevent unauthorized operation.
c. Refer to section 4.2 in the Hydro 70
Operator’s Manual for complete starting information.
5.5—HOUR METER
The hour meter indicates the number of hours
the tractor has been operated. It can be used to keep
track of maintenance intervals and the amount of time
required to perform various tasks. The hour meter
operates whenever the ignition key is in the “ON”
position.
5.6—AMMETER
The ammeter indicates the condition of the charging
circuit. If the ammeter indicates a negative reading refer
to the Briggs and Stratton engine manual.
5.7—REEL CONTROL
The reel control lever must be in the disengaged
or back position to start the engine. Placing lever in
engaged position will allow reels to run when mowers are
lowered.
Never operate the mowers when they are not
cutting grass as excessive friction and heat will develop
between the bedknife and reel, and damage the cutting
edge.