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National Mower HY70OM-8/992 manual

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Table of contents for the manual

  • Page 1

    HYDRO 70" TRIPLEX NA TIONAL MOWER CO. 700 Raymond Ave., P.O. Box 14299, St. Paul, Minnesota 55114-0299, U.S.A. Phone (651) 646-4079  Fax (651) 646-2887 OWNER'S MANUAL Includes Assembly, Maintenance & Parts Lists For Serial Numbers 1586 & Up HYD70OM-8/99[...]

  • Page 2

    HY70OM-8/99 2 DECLARA TION OF CONFORMITY according to Directive 89/392/EEC We NATIONAL MOWER COMPANY .............................................................................................................................................................. (Name of supplier) 700 Raymond Avenue, St. Paul, Minnesota 55114 U.S.A. ..................[...]

  • Page 3

    NATIONAL HYDRO 70" TRIPLEX ® 3 National Mower Safe Operation Practices For Riding Mowers IMPOR T ANT WARNING  California, USA residents are required by law (CA PRC 4442 & CA H & SC 13005) to equip their engines with spark arresters when operating in flammable vegitation. Arresters must be obtained from your engine dealer and are no[...]

  • Page 4

    HY70OM-8/99 4 T ABLE OF CONTENTS Declaration Of Conformity ............................................................................. 2 Safe Operating Practices .............................................................................. 3 Introduction ............................................................................................[...]

  • Page 5

    NATIONAL HYDRO 70" TRIPLEX ® 5 1INTRODUCTION This manual has been prepared by National Mower Company as an aid to users for assembly, maintenance, adjustment and ordering replacement parts. Additional information will gladly be furnished by calling or writing National Mower Company. Please furnish us with the Model Number, Serial Number an[...]

  • Page 6

    HY70OM-8/99 6 3SPECIFICA TIONS 3.1ENGINE SPECIFICA TIONS TYPE: Twin Cylinder, Air Cooled ENGINE MODEL: Briggs & Stratton Vanguard HORSEPOWER: 11.9 kw (16 hp) COOLING: Ducted air flow 3.2TRANSMISSION TRACTION DRIVE: D irect coupled variable displacement hydraulic pump with high torque wheel motors. OIL TANK: ............................[...]

  • Page 7

    NATIONAL HYDRO 70" TRIPLEX ® 7 07406 07257 07405 07403 07372 07256 07404 NATIONAL MOWER CO. 700 RAYMOND AVE. ST. PAUL, MINNESOTA 55114 USA 651-646-4079 FAX 651-646-2887 POWER RATING: 9.7 kW at: 3200 rpm WEIGHT: 528 kg 3.8DISPOSAL NUMBERS Petrol, Lead Free: ....................... 54104 Engine oil: ................................... 54112 [...]

  • Page 8

    HY70OM-8/99 8 07408 07409 07407 TRANSFERS, Continued 3.1 1TRANSFER DESCRIPTION 07406 Do not exceed 25 degree slope. Located on main chassis. 07403 Parking brake on/off. Located on main chassis. 07372 Manufactures identification and specifications. Located on main chassis. 07257 Mowers up/reels off. Located on main chassis. 07256 Mowers down/r[...]

  • Page 9

    NATIONAL HYDRO 70" TRIPLEX ® 9 4ASSEMBL Y INSTRUCTIONS 4.1ASSEMBL Y The Hydro 70 is shipped in two separate crates, one for the tractor and one for the cutting units. 4.2TRACTOR ASSEMBL Y 1. Disassemble crating for the tractor carefully to prevent damage to components. 2. Remove the tape holding the keys in the steering shaft. Positi[...]

  • Page 10

    HY70OM-8/99 10 4. Remove the two top fasteners holding the pivot bracket to the cutting unit and loosen the bottom fastener so the bracket is free to rotate. 5. Align and assemble the spring and pull arm previously attached to the tractor to the pull arm shaft on the cutting unit. Place the belt on the cutting unit pulley. With the pull arm assembl[...]

  • Page 11

    NATIONAL HYDRO 70" TRIPLEX ® 11 5GENERAL INFORMA TION 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 separa[...]

  • Page 12

    HY70OM-8/99 12 5.8CHOKE When starting a cold engine, pull the choke control out to close the choke plate and allow a richer fuel mixture to enter the engine. After the engine starts, push the choke control about half way in to keep the partially closed. Push the choke control all the way in to open the choke plate for normal operation after the [...]

  • Page 13

    NATIONAL HYDRO 70" TRIPLEX ® 13 6OPERA TION 7ADJUSTMENTS 7.1ADJUSTMENTS Read each instruction completely and make sure you understand it before making any adjustment. Follow all the safety precautions. To avoid possible serious bodily injury, before making any adjustments or performing maintenance, place all tractor controls in Neutr[...]

  • Page 14

    HY70OM-8/99 14 REEL CONTROL CLUTCH ADJUSTMENT, Continued If clutch idler is restricted from its proper function, (engaging and disengaging reel belt drive), follow these steps. Refer to figure on the previous page. 1. Make sure clutch rod is free from any restriction by moving lever arm back and forth. 2. Loosen mounting bolts for the clutch idler.[...]

  • Page 15

    NATIONAL HYDRO 70" TRIPLEX ® 15 7.6 REEL TO BEDKNIFE ADJUSTMENT The reel is adjusted to a fixed position bedknife. This makes a more rugged and stable frame retaining adjustment longer. To adjust the reel to bedknife contact, turn the hex adjuster on each side of the reel down. Proceed slowly and do not over adjust - about 1/8th of a turn [...]

  • Page 16

    HY70OM-8/99 16 Reels must be ground at 25° in the direction shown by the arrow. Back grind until reel blades are free from roundness, dents and nicks. Spin grind to remove all burrs. All blades must be on the same diameter. For maximum cutting efficiency, grind bed knife top and front edges at 5° as shown. BACK GRIND IN THE DIRECTION OF THE ARROW[...]

  • Page 17

    NATIONAL HYDRO 70" TRIPLEX ® 17 8MAINTENANCE To avoid possible serious bodily injury, before performing any adjustments, maintenance, or lubrication, place all controls in Neutral, lower the mowers to the ground, engage parking brake, turn ignition switch off and remove key. 8.1GENERAL MAINTENANCE The long trouble-free life of you[...]

  • Page 18

    HY70OM-8/99 18 8.4CHARGING A BA TTER Y 1. Remove the battery from the tractor before charging. 2. Be sure charger is Off. 3. Connect charger leads to battery. Connect the positive (+) connector from the charger to the positive battery terminal. Connect the negative () connector of the charger to the negative battery terminal. To avoid p[...]

  • Page 19

    NATIONAL HYDRO 70" TRIPLEX ® 19 8. 9HYDRAULIC HOSES 1. Hydraulic hose and tube lines should be inspected every week to check for cuts, loose connections, kinks and wear. To avoid serious bodily injury, always lower mowers to the ground, place all controls in Neutral and shut off engine before inspecting hydraulic lines or hoses. Never run [...]

  • Page 20

    HY70OM-8/99 20 MAINTENANCE, Continued 8.1 1HYDRAULIC OIL FIL TER To prevent damage to the hydraulic system, the hydraulic oil filter should be changed after the first 25 hours of operation and every 250 hours thereafter. 1. Remove the old filter and fill new filter with clean fluid. 2. Install new filter. Hand tighten only. 3. Run engine at idle[...]

  • Page 21

    NATIONAL HYDRO 70" TRIPLEX ® 21 8.17COUPLING ALIGNMENT To prevent coupling failures proper shaft alignment between the pump shaft and engine shaft is required. Following these steps will ensure proper alignment. 1. Remove flex coupling disk (Part# 591181) from in- between coupling halves. 2. Rotate both coupling halves to a vertical positi[...]

  • Page 22

    HY70OM-8/99 22 9ST ORAGE 9.1GENERAL INSTRUCTIONS When you do not plan to use your vehicle for some time, it should be stored in a dry and protected place. Unnecessary exposure to the elements may deteriorate its appearance and shorten the usual service life. 9.2ENGINE 1. Drain the fuel from the fuel tank and carburetor. 2. Operate the engi[...]

  • Page 23

    NATIONAL HYDRO 70" TRIPLEX ® 23 10TROUBLE SHOOTING GUIDE 10.1ENGINE WILL NOT ST ART Check fuel in tank. Check if fuel is at end of fuel line at carburetor. If not, clean filter on fuel shutoff on bottom of tank. If not, replace fuel filter. Check spark plugs. Check for spark at spark plug. Check for foul condition. Replace spark plug if[...]

  • Page 24

    HY70OM-8/99 24 1 1LUBRICA TION Grease Items 1 through 9 (use pressure gun) every 40 hours. Clean fittings and slowly fill until grease begins to seep out. Apply several drops of SAE 30 oil to all linkage friction points. Item Description No. of Fittings 1 Fork pivot bearing 1 2 Rear wheel hub bearing 1 3 Handle bar shaft pivot 2 4 Pivot bearings[...]

  • Page 25

    NATIONAL HYDRO 70" TRIPLEX ® 25 Grease Items 1 through 7 (use pressure gun) every 40 hours. Clean fittings and slowly fill until grease begins to seep out. Item Description No. of Fittings 1 Reel shaft bearing 2 2 Reel to bed knife adjuster 2 3 Roller bearing (per cutting unit) 4 4 Roller adj. bracket (per cutting unit) 4 5 Pull arm, rear 2 6[...]

  • Page 26

    HY70OM-8/99 26 12ELECTRICAL SCHEMA TIC GROUND WIRE (07104) REEL CONTROL SWITCH (#07325) SEAT SWITCH (#07332) HOUR METER (#07063) GRD. BATTERY IGNITION SWITCH (#07065) GRD. AMMETER (#07064) STARTER SOLENOID (#07057) SOLENOID WIRE (#07384) 30 AMP FUSE TRACTION PEDAL SWITCH (#302533) WIRE HARNESS (#07328) TOGGLE SWITCH (#07386) SOLENOID VALVE (#073[...]

  • Page 27

    NATIONAL HYDRO 70" TRIPLEX ® 27 P ARTS LIST Note: For your records and future ordering, fill in the following information. DATE PURCHASED MODEL NO. SERIAL NO. ORDERING INFORMATION When ordering replacement parts, always furnish: 1. Your complete name, address and phone number. 2. Model Number and Serial Number (plate located on the main frame[...]

  • Page 28

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    NATIONAL HYDRO 70" TRIPLEX ® 29 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

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    NATIONAL HYDRO 70" TRIPLEX ® 31 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

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    NATIONAL HYDRO 70" TRIPLEX ® 33 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

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    NATIONAL HYDRO 70" TRIPLEX ® 35 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

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    NATIONAL HYDRO 70" TRIPLEX ® 37 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

  • Page 38

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    NATIONAL HYDRO 70" TRIPLEX ® 39 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

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    NATIONAL HYDRO 70" TRIPLEX ® 41 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

  • Page 42

    HY70OM-8/99 42 WHEEL MOTOR PUMP FILTER LIFT CYLINDER TANK NEEDLE VALVE LIFT VALVE WHEEL MOTOR REAR WHEEL MOTOR[...]

  • Page 43

    NATIONAL HYDRO 70" TRIPLEX ® 43 1 07303 HOSE, Motor 3 2 07309 LINE, Pump to Tee 1 3 07310 LINE, Pump to Tee 1 4 07299 HOSE, Case Drain, R.H. 1 5 07306 LINE, Case Drain 1 6 07311 LINE, Pump to Filter 1 7 07307 LINE, Tank to Pump 1 8 07300 HOSE, Suction 1 9 07375 LINE, Pump to Valve 1 10 07376 LINE, Filter to Valve 1 11 07301 HOSE, Lift Cylinde[...]

  • Page 44

    HY70OM-8/99 44 WHEEL MOTOR FILTER PUMP LIFT CYLINDER TANK NEEDLE VALVE LIFT VALVE WHEEL MOTOR REAR WHEEL MOTOR[...]

  • Page 45

    NATIONAL HYDRO 70" TRIPLEX ® 45 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

  • Page 46

    HY70OM-8/99 46 _______________________________________________________________________________________________________________________________ _________ _______________________________________________________________________________________________________________________________ ________ ____________________________________________________________[...]

  • Page 47

    NATIONAL HYDRO 70" TRIPLEX ® 47 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Qty. _ _ _ _ _ _ _[...]

  • Page 48

    HY70OM-8/99 48 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Qty. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ [...]

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    NATIONAL HYDRO 70" TRIPLEX ® 49 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Qty. _ _ _ _ _ _ _[...]

  • Page 50

    HY70OM-8/99 50 Qty. Item P ar t No . Description Description Item Part No. Qty. 1 302864 ADJUSTER, Rear Roller 3 2 02228 NUT, Jam 1 2 3 09169 CABLE, Roller Scraper 3 4 302865 ADJUSTER, Rear Roller 3 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _[...]

  • Page 51

    NATIONAL HYDRO 70" TRIPLEX ® 51 NA TIONAL MOWER COMP ANY ONE YEAR LIMITED W ARRANTY For the period of one year from the date of purchase (45 days if the product is used for rental purposes), National Mower Company will repair or replace free of charge, for the original purchaser, any part or parts found by inspection to be defective by our Fa[...]