National Mower HY70OM-8/992, HYD70OM-8/99 owner manual General Information

Models: HY70OM-8/992 HYD70OM-8/99

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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.

NATIONAL® HYDRO 70" TRIPLEX

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.

5.3—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.

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.

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National Mower HY70OM-8/992, HYD70OM-8/99 owner manual General Information