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Includes Operation, Maintenance and Parts List
700 Raymond Ave., P.O. Box 14299
NATIONAL MOWER CO.
St. Paul, Minnesota 55114-0299, U.S.A.
Phone (651) 646-4079 – Fax (651) 646-2887
www.nationalmower.com
June 2003
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ONE YEAR LIMITED WARRANTY 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 Factory Authorized Service Station or by the Factory at St. Paul, Minnesota to be defective in material or workmanship or both. All transportation charges on parts submitted for repair or replacement under this warra
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® NATIONAL 68 SR & DL TRIPLEX TABLE OF CONTENTS Warranty ................................................................................................... 2 Introduction ............................................................................................... 3 Safety Information .................................................................................... 4 Safety and Control Decals ........................................................................ 7 Receipt of Shipment ..
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SAFETY INFORMATION safety guards are in place at all times, except during The safety alert words below are used in this manual to servicing. identify potentially hazardous conditions. Their Keep all nuts, bolts, and screws tight. definitions are: 3. OPERATION DANGER means "IMMINENTLY HAZARDOUS SITUATION! If not avoided, WILL RESULT in death or Wear approved safety glasses or goggles when operating serious injury." the mower. Do not allow children to operate mower. Do not allow WARNING mea
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® NATIONAL 68 SR & DL TRIPLEX Do not mow in reverse, unless absolutely necessary. Never mow while people, especially children, or pets are Always look down and behind before and during reverse nearby. motion. Keep in mind that the operator or user is responsible for Shut off and raise the cutting units before operating the accidents or hazards occurring to other people or their mower at transport speed. (Model 68 DL only.) property. Do not reverse battery connections. Damage to the mower Do not
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SAFETY INFORMATION Disengage drive to attachments when transporting or not 3. OPERATION in use. Do not operate the engine in a confined space where Stop the engine and disengage drive to attachment: dangerous carbon monoxide fumes can collect. before refuelling; Mow only in daylight or good artificial light. before removing the grass catcher; Before attempting to start the engine, disengage all cutting unit clutches and shift into neutral. before making height adjustment; Do not use on sl
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® NATIONAL 68 SR & DL TRIPLEX SAFETY AND CONTROL DECALS Safety decals and instructions are located on the mower near the controls or near areas of potential hazards. Worn, damaged, or loose decals must be replaced. The decal part number and the location of the decal on the mower are listed next to each decal. 07584 – TRANSPORT CLUTCH PEDAL 07581 - MAIN ENGINE CLUTCH (Model 68 DL) LEVER (located on top surface of engine belt guard) (located on top surface of engine belt guard) Pressing the ped
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SAFETY AND CONTROL DECALS 07587 – IGNITION KEY (Model 68 SR) 07599 – WARNING (located on top surface of main belt DECAL guard) (located on instrument cluster [68 DL] or main To start the engine, place the main belt guard [68 SR]) clutch and all cutting unit clutches in neutral. Turn the key to the clockwise Read and understand position and pull on the recoil starter. the information in the Use the choke as required. Owner’s Manual be- fore operating this To stop the engine, turn the key to the
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® NATIONAL 68 SR & DL TRIPLEX 07083 – SERIAL NUMBER DATA PLATE (located on mower frame, left side, below seat) 07590 – REAR CUTTING UNIT CLUTCH (located on top surface of rear cutting unit) Pull lever forward and toward the center of the machine to engage sliding jaw clutch. To disengage, pull lever forward and out to engage locking pin. Never engage the drive unless the rear cutting unit has been lowered to the cutting position. (Note that the decal is viewed properly while looking toward the
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SAFETY AND CONTROL DECALS 205399 – Optional DIAL-A-HEIGHT SCALE (Rear cutting units) 205346 – Optional DIAL-A-HEIGHT SCALE (Wing cutting units) (located on each Dial-A-Height bracket) Align the bottom edge of the Dial-A-Height bracket with the desired height of cut on this decal. Read the instructions for the Dial-A-Height adjusters in the Operations section of this manual. 10 68OM-06/03
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® NATIONAL 68 SR & DL TRIPLEX RECEIPT OF SHIPMENT Carefully inspect your machine and crate for damage that Note: Claims for shipping damages must be noted by the could have occurred during shipment. If damages or consignee at the point of destination and filed with the shortages are noted, have the transportation company’s transportation company that delivers the shipment. representative note this on the bill of lading. UNCRATING INSTRUCTIONS Wear protective gloves. Steel 3. Unbolt Seat (3) fr
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ASSEMBLY Improper assembly or adjustments WARNING can cause serious injury. SEAT REAR CUTTING UNIT 1. Mount the Rear Cutting Unit Lifter and Seat Assembly 1. Pivot the Seat Brace (A) from the axle so that the top (A) to the mower frame using (2) 1/2" bolts, nuts, and end aligns with the tab at the back of the seat hinge washers (B). assembly. Fasten with a 5/16" x 1" Hex Head Bolt, Lock Washer and Hex Nut. 2. Fasten the seat slides (C) to the bottom of the seat (D) using the fasteners provide
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® NATIONAL 68 SR & DL TRIPLEX WING CUTTING UNITS 1. Remove the two Wing Cutting Unit Belts from the steering column. 2. Release the Laches (A) from Wing Cutting Units. To release the latch, lift the wing cutting unit handle until the latch swings upward into a nearly vertical position. Carefully lower the cutting unit to the ground. Avoid dropping the cutting unit, as damage may result to the cutting unit, the mower, or your turf. 3. Slip wing Cutting Unit belts (B) over Countershaft Pull
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PREPARATION FUEL - Check fuel level. Add fuel as required. Refer to Handle cutting units carefully with DANGER the engine manual for type of fuel and other safety protective gloves. Reels and bed knives are very sharp. Reels rotate freely and rotating requirements. one reel can cause other reels to rotate. ENGINE COOLING - Keep engine cowlings clear of clippings. Moving machinery can be dangerous LUBRICATION - Add lubricant to pivots and other CAUTION if not operated properly. Follow all lub
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® NATIONAL 68 SR & DL TRIPLEX OPERATION D. Transport Clutch (Model 68 DL only) G. Rear Cutting Unit Clutch Engages drive to the Rear NEVER USE THE TRANSPORT Cutting Unit. WARNING CLUTCH WHILE THE CUTTING Pull lever forward and UNITS ARE TURNING OR WHEN THE toward the center of the DIFFERENTIAL SHIFT IS IN REVERSE. machine to engage sliding jaw clutch. Use this clutch to travel To disengage, pull lever between mowing sites at forward and out to engage speeds faster than those locking pin. obtai
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OPERATION K. Ignition Switch (Model 68 DL shown) ALWAYS SHUT OFF THE ENGINE M. Parking Brake Lever CAUTION AND REMOVE THE KEY BEFORE Provides a lock for the brake. Push brake lever forward, LEAVING THE MOWER SEAT. over center, to lock. Pulling brake lever back, toward the rear of the machine will disengage the brake. The 68 DL ignition switch is located on the instrument N. Service cluster. It is a three- Brake position switch. Depress the Ser- Turn the key vice Brake foot clockwise to the ped
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® NATIONAL 68 SR & DL TRIPLEX HEIGHT OF CUT ADJUSTMENT 2. DIAL-A-HEIGHT ADJUSTERS (OPTIONAL) To set the height of cut, lift the vinyl cap and socket (A) off To assure safety, disengage the DANGER the adjuster tube. To raise the height of cut, turn the engine clutch lever, remove the socket clockwise (viewed from above). To lower the ignition key, and disconnect the engine spark plug height of cut, turn the socket counterclockwise. Each wire prior to making any of the following adjustments.
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MAINTENANCE LUBRICATION leakage is evident, it is recommended that the grease be Lubricate the machine at the recommended locations and checked once each year. Check grease level by loosening intervals using the proper lubricants to ensure maximum the bolts in the differential case flanges and spreading service and long life of your machine. case halves. It is not necessary to totally disassemble the case or remove the wheels for this inspection. Add Multi- Lubrication locations must be free of
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® NATIONAL 68 SR & DL TRIPLEX LUBRICATION POINTS 9. Upper countershaft 1. Front wheel bearing 2. Steering Kingpin 10. Lower countershaft 3. Front axle pivot 4. Steering column (2 places) 5. Brake pedal pivot 6. Idler pivot bracket (68 DL only) 7. Main clutch handle 11. Wing mower pull rod (2 places) 8. Wing mower clutch handle 19 68OM-06/03
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MAINTENANCE LUBRICATION POINTS 18. Rear mower pivot tube 12. Rear axle (2 places) 13. Differential input tube 14. Brake drum tube 15. Main axle tube 19. Rear mower countershaft (2 places) 20. Rear mower clutch 16. Seat Hinge 21. Wing mower lift arm (2 places) 17. Rear mower lift arm pivot 20 68OM-06/03
