HYDRO 70 TRIPLEX OWNER’S MANUAL - AriensCo

HYDRO 70" TRIPLEXOWNER'S MANUALIncludes Assembly, Maintenance &Parts ListsFor Serial Numbers 1586 & UpNATIONAL MOWER CO.HYD70OM-8/99700 Raymond Ave., P.O. Box 14299, St. Paul, Minnesota 55114-0299, U.S.A.Phone (651) 646-4079 Fax (651) 646-2887

DECLARATION OF CONFORMITYaccording to Directive 89/392/EECWeNATIONAL MOWER COMPANY.(Name of supplier)700 Raymond Avenue, St. Paul, Minnesota 55114 U.S.A.(Full address of the manufacturer authorized representative in the community must also give thebusiness name and address of the manufacturer)declare under our sole responsibility, that the productNATIONAL HYDRO 70" TRIPLEX MOWER(Make and model)to which this declaration relates corresponds to the relevant basic safety and health requirements of theDirective 89/392/EEC, (if applicable)and to the requirements of other relevant Directives:EN292-1&2--EN294--EN349.(Title and/or number and date of issue of the other Directives)(If applicable)For the relevant implementation of the safety and health requirements mentioned in the directives, thefollowing standard(s) and/or technical specification(s) has (have) been respected:ANSI B71.4.(Title and/or number and date of issue of standard(s) and/or technical specification(s))8/1/99.(Place and date of issue)(Name, function and signature of the authorized person)2HY70OM-8/99

NATIONAL HYDRO 70" TRIPLEXIMPORTANTNational Mower Safe Operation PracticesFor Riding Mowers1.Know control functions and how to stop quickly. READ THE OWNER S MANUAL.2.Do not allow children to operate the mower. Do not allow adults to operate the mower without properinstruction.3.Do not carry passengers. Keep children and pets at a safe distance from an operating mower.4.Clear the work place of objects which might be picked up by the blades and thrown.5.To start engine, operator must be seated, reel control must be disengaged and foot control must be inneutral.6.Take all possible precautions when leaving the mower unattended, such as shifting into neutral, stoppingthe engine and removing the ignition key.7.Do not stop or start suddenly when going uphill or downhill. Use extreme caution when mowing on slopes.8.Reduce travel speed on slopes and in sharp turns to prevent tipping or loss of control. Use extreme cautionwhen changing direction on slopes.9.Watch for holes in the terrain and other hidden hazards.10.Watch for dangerous traffic when crossing or near roadways.11. Never direct the discharge of material from operating reels toward bystanders nor allow anyone near themower during operation.12. Handle gasoline with CAUTION - it is highly flammable.a. Use an approved gasoline container.b. Never fill the fuel tank indoors. Wipe spilled gas immediately.c. Open garage doors to allow ventilation if engine is run inside-exhaust fumes are dangerous. Do notrun engine in any enclosed area.13. Keep the mower in good operating condition. Make sure that all safety switches are operating properlyand all safety guards are in place at all times, except during servicing.14. Keep all nuts, bolts and screws tight to be sure that the mower is in a safe working condition.15. Never store the mower, with gasoline in the tank, inside a building where the fumes could reach an openflame or spark. Allow the engine to cool before storing in any enclosure.16. Keep the engine free of grass, leaves or excessive grease to reduce a fire hazard.17. The mower and reels should be stopped and inspected for damage after striking a foreign object. Thedamage should be repaired before restarting and operating the mower.18. Do not change the engine governor settings or over speed the engine.19. Proceed as follows when mowing.a. Mow only in the daylight or in good artificial light.b. Never make a cutting height adjustment while the engine (motor) is running.c. Shut the engine (motor) off when removing grass or unclogging reels.WARNING California, USA residents are required by law (CA PRC 4442 & CA H & SC 13005) to equip theirengines with spark arresters when operating in flammable vegitation. Arresters must be obtained from yourengine dealer and are not available from National Mower Company.3

TABLE OF CONTENTSDeclaration Of Conformity . 2Safe Operating Practices . 3Introduction . 5Receipt of Shipment . 5Specifications . 6-9Engine Specifications . 6Transmission . 6Vehicle Specifications . 6Battery . 6Mower Specifications . 6Weight and Dimensions . 6Lubricants . 6Disposal Numbers . 7Noise Emission and Vibration . 7Decals . 7-8Assembly Instructions . 9-10General Information . 11-12Engine . 11Traction Drive Train . 11Reel Drive . 11Ignition Switch . 11Hour meter . 11Ammeter . 11Reel Control . 11Choke . 12Throttle Lever . 12Traction Pedal . 12Mow and Lift Treadle . 12Free Wheeling Valve . 12Drop/Lift Needle Valve . 12Interlock Switches . 12Operation . 13Adjustments . 13Traction Pedal . 13Reel Control Clutch . 13, 14Seat Switch . 14Height of Cut . 14Reel to Bedknife . 15Reel End Play . 15Backlapping Procedure . 15, 16Grinding Procedure . 16Maintenance . 17General . 17Assembly and Disassembly . 17Battery . 17, 18Charging a Battery . 18Bed Knife Replacement . 18Fuel filter . 18Engine . 18Electrical System . 18Hydraulic Hoses . 19Hydraulic Oil . 19Hydraulic Oil Filter . 20Handle Bar Removal . 20Jumper Cables . 204HY70OM-8/99

NATIONAL HYDRO 70" TRIPLEXLubrication . 20Painting . 20Belt Replacement . 20, 21Coupling Alignment . 21Storage . 22General Instructions . 22Engine . 22Battery . 22Tractor . 22Tires . 22Starting After Storage . 22Trouble Shooting Guide . 23Engine Will Not Start . 23Tractor Will Not Move . 23Reel Not Turning . 23Reel Will Not Cut . 23Lubrication . 24, 25Electrical Schematic . 26Parts List and Ordering Information . 27Tank and Rear Fork Assembly . 28, 29Steering Tower Assembly . 30, 31Engine and Footrest Assembly . 32, 33Traction Pedal and Pump Assembly . 34, 35Lift Arm and Drive Assembly . 36, 37Front Cutting Unit Assembly . 38, 39Rear Cutting Unit Assembly . 40, 41Hydraulic Hose and Line Assembly . 42, 43Hydraulic Fitting Assembly . 44, 45Basket Assembly . 46Belt Too . l46Height Of Cut Bar . 47Pump . 47Wheel Motor . 48Lift Valve . 48Lift Cylinder . 49Front Roller Scraper Kit . 49Rear Roller Scraper Kit . 50Valve Block . 50Warranty . 511 INTRODUCTIONThis manual has been prepared by National MowerCompany as an aid to users for assembly, maintenance,adjustment and ordering replacement parts. Additionalinformation will gladly be furnished by calling or writingNational Mower Company.Please furnish us with the Model Number, SerialNumber and Date of Purchase when contacting us aboutyour machine. Designations of right, left, front and rear areused as if the operator was sitting in the mower seat.2 RECEIPT OF SHIPMENTNOTECarefully inspect your machine and crate for damagethat could have occured during shipment. If damages orshortages are noted, have the transportation company srepresentative note this on the bill of lading.Claims for shipping damages must be noted by theconsignee at the point of destination and filed with thetransportation company that delivers the shipment.5

3 SPECIFICATIONS3.1 ENGINE SPECIFICATIONSTYPE: Twin Cylinder, Air CooledENGINE MODEL: Briggs & Stratton VanguardHORSEPOWER: 11.9 kw (16 hp)COOLING: Ducted air flow3.2 TRANSMISSIONTRACTION DRIVE: Direct coupled variable displacementhydraulic pump with high torquewheel motors.OIL TANK: . 18.9 L (5 gallon) capacity3.5 MOWER SPECIFICATIONSNUMBER AND SIZE: 3 25" ReelsREEL DIAMETER: 7" (17.8 cm)BEARINGS: Timken Tapered RollerBLADES: Six Alloy Steel BladesHEIGHT OF CUT: Adjustable: 1/2 to 2" (1.3 cm to5.08 cm)OVERALL CUTTING WIDTH: 70" (177.8 cm)HEIGHT ADJUSTMENT: Roller Screw AdjustmentBEDKNIFE ADJUSTMENT: Screw adjustment of reel tobedknife.REEL FLOATATION: Front and Rear Roller with CuttingUnit Center-line Pivot.3.3 VEHICLE SPECIFICATIONSFUEL TANK: 18.9 L (5 gallon) capacityWHEELS AND TIRES:3.6 WEIGHT & DIMENSIONSOVERALL LENGTH: 86-3/8" (219.4 cm)Front: 20-10 x 8.00 Tubeless TurfmateOVERALL HEIGHT: 44-3/4" (113.6 cm)Rear: 18-8.50 x 8.00 Tubeless TurfmateWHEEL BASE: 50-3/4" (128.9 cm)TIRE PRESSURE: 10-12 PSIFRAME: Welded steel constructionMOWING SPEED: 0- 12 K/H (0 - 7.5 MPH)TRANSPORT SPEED: 12 K/H (7.5 MPH)REVERSE SPEED: 3 K/H (2 MPH)CONTROLS:Foot operated traction pedal for forward andreverse.Hand operated choke and throttle levers.Foot operated hydraulic lift with auto start/stopfeature.Hand operated reel engagement lever.Free-wheeling valve.WHEEL TREAD WIDTH: 45" (114.3 cm) (center of tires)OVERALL WHEEL WIDTH: 55" (139.7 cm)OVERALL WIDTH: 75" (190.5 cm)WORKING WEIGHT: 1, 085 lbs. (492 kg)3.7 LUBRICANTSENGINE OIL:Use high-quality detergent oil API (AmericanPetroleum Institute) service class SF. Select theviscosity based on the air temperature at the time ofoperation as shown in the table.Recommended SAE Oil Viscosity Grades3.4 BATTERYTYPE: Group U1 Type GTNOMINAL VOLTAGE: 12VDIMENSIONS: L: 7-3/4 (19.68 cm) x W: 5-3/16 (13.17 cm) x H: 7-5/16 (18.5 cm)HYDRAULIC SYSTEM OIL:Use ISO GRADE 100 (SAE 30W) Hydraulic Oil6HY70OM-8/99

NATIONAL HYDRO 70" TRIPLEX3.8 DISPOSAL NUMBERSPetrol, Lead Free: . 54104Engine oil: . 54112Fiberglass parts: . 57103Tires: . 57502Gear oil: . 541123.9 NOISE EMISSION & VIBRATIONSound:Operator Position, 88 dBASound Power Level (LwA), 106 dBAVibration*:Max. Vibration, 57.7 m/s2 RMSLocation, Left HandOperating Condition: Engine rpm-3200, Unit stationaryGrease: . 54202Plastic tanks: . 571273.10 TRANSFERS07403NATIONAL MOWER CO.700 RAYMOND AVE.ST. PAUL, MINNESOTA 55114 USA651-646-4079FAX 651-646-2887POWER RATING: 9.7 kW at: 3200 rpmWEIGHT: 528 kg0740607372072570725607405074047

TRANSFERS, Continued0740807409074073.11 TRANSFER DESCRIPTION07406Do not exceed 25 degree slope. Located on main chassis.07403Parking brake on/off. Located on main chassis.07372Manufacture s identification and specifications. Located on main chassis.07257Mowers up/reels off. Located on main chassis.07256 Mowers down/reels on. Located on main chassis.07405 Sound level at operators position. Located on main chassis.07404 Sound power level. Located on main chasis.07408 Mow pedal operation and vehicle motion pedal operation. Located on main chassis.07409 Main instrument panel, Three wheel drive unit. Located on main chassis.07407 Main instrument panel, Two wheel drive unit. Located on main chassis.8HY70OM-8/99

NATIONAL HYDRO 70" TRIPLEX4 ASSEMBLY INSTRUCTIONS4.1 ASSEMBLYThe Hydro 70 is shipped in two separate crates, one forthe tractor and one for the cutting units.4.2 TRACTOR ASSEMBLY1. Disassemble crating for the tractor carefully toprevent damage to components.2. Remove the tape holding the keys in the steeringshaft. Position the handlebar assembly over the shaftand key securing it with set screws provided it thehandle bar.3. For removal of handle bar see Section 8.12.4. Remove the tower cover. Refer to section 3.4 forbattery specifications. Install the battery on the baseinside the tower. Attach the red wire to the positiveterminal of the battery and attach the black ground wireto the negative terminal of the battery. Replace andsecure the tower cover.HANDLE BARSEATSUPPORT6. Tires should be checked and if necessary adjusted forproper inflation. Refer to Section 3.3.7. Check the oil level in the oil tank. Refer to Section 8.10.8. Check the oil level

HYDRO 70" TRIPLEX NATIONAL MOWER CO. 700 Raymond Ave., P.O. Box 14299, St. Paul, Minnesota 55114-0299, U.S.A. Phone (651) 646-4079 Œ Fax (651) 646-2887 OWNER’S MANUAL Includes Assembly, Maintenance & Parts Lists For Serial Numbers 1586 & Up