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Customer Support

Please do NOT return the machine to the retailer or dealer without first contacting our Customer Support Department.

If you have difficulty assembling this product or have any questions regarding the controls, operation, or maintenance of 

this machine, you can seek help from the experts. Choose from the options below:
◊  Visit us on the web at www.mtdproducts.com
◊  Call a Customer Support Representative at (800) 800-7310 or (330) 220-4683

  See How-to Maintenance and Parts Installation Videos at 

www.mtdparts.com/KnowledgeCenter

◊ 

Write us at MTD LLC • P.O. Box 361131 • Cleveland, OH • 44136-0019

Thank you for purchasing a lawn tractor manufactured by MTD.  

It was carefully engineered to provide excellent performance 

when properly operated and maintained. 
Please read this entire manual prior to operating the equipment.  

It instructs you how to safely and easily set up, operate and 

maintain your machine.  Please be sure that you, and any other 

persons who will operate the machine, carefully follow the 

recommended safety practices at all times.  Failure to do so could 

result in personal injury or property damage. 
All information in this manual is relative to the most recent 

product information available at the time of printing.  Review 

this manual frequently to familiarize yourself with the machine, 

its features and operation.  Please be aware that this Operator’s 

Manual may cover a range of product specifications for various 

models. Characteristics and features discussed and/or illustrated 

in this manual may not be applicable to all models. MTD 

reserves the right to change product specifications, designs and 

equipment without notice and without incurring obligation.

If applicable, the power testing information used to establish 

the power rating of the engine equipped on this machine can be 

found at www.opei.org or the engine manufacturer’s web site.

If you have any problems or questions concerning the machine, 

phone your local authorized MTD service dealer or contact us 

directly.  MTD’s Customer Support telephone numbers, website 

address and mailing address can be found on this page. We want 

to ensure your complete satisfaction at all times.
Throughout this manual, all references to 

right

 and 

left

 side of the 

machine  are observed from the operating position
The engine manufacturer is responsible for all engine-related 

issues with regards to performance, power-rating, specifications, 

warranty and service. Please refer to the engine manufacturer’s 

Owner’s/Operator’s Manual, packed separately with your 

machine, for more information.

Thank You

Record Product Information

Before setting up and operating your new equipment, please 

locate the model plate on the equipment and record the 

information in the provided area to the right. You can locate the 

model plate by 

looking beneath the seat.

 This information will 

be necessary, should you seek technical support via our web site, 

Customer Support Department, or with a local authorized service 

dealer.

M

odel

 N

uMber

S

erial

 N

uMber

To The Owner

1

2

Safe Operation Practices ........................................ 3

Assembly & Set-Up .................................................. 9

Controls & Features ................................................12

Operation ................................................................15

Maintenance  & Adjustment .................................18

Service .................................................................... 22

Troubleshooting .................................................... 26

Replacement Parts ................................................ 27

Attachments & Accessories .................................. 28

Emission Control Statement ................................. 30

Warranty ................................................................ 32

Table of Contents

Summary of Contents for series 780

Page 1: ...tenance Service Troubleshooting Warranty WARNING READ AND FOLLOW ALL SAFETY RULES AND INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE THIS MACHINE FAILURE TO COMPLY WITH THESE INSTRUCTIONS MA...

Page 2: ...plicable to all models MTD reserves the right to change product specifications designs and equipment without notice and without incurring obligation If applicable the power testing information used to...

Page 3: ...ects which ricochet can cause serious injury to the eyes 9 Wear sturdy rough soled work shoes and close fitting slacks and shirts Loose fitting clothes and jewelry can be caught in movable parts Never...

Page 4: ...mselves and others from serious injury 29 If situations occur which are not covered in this manual use care and good judgment Contact your customer service representative for assistance Slope Operatio...

Page 5: ...not shift to neutral and coast downhill Service Safe Handling of Gasoline 1 To avoid personal injury or property damage use extreme care in handling gasoline Gasoline is extremely flammable and the v...

Page 6: ...to protect the environment 15 According to the Consumer Products Safety Commission CPSC and the U S Environmental Protection Agency EPA this product has an Average Useful Life of seven 7 years or 270...

Page 7: ...deck Contact with the blade s can amputate hands and feet WARNING THROWN OBJECTS This machine may pick up and throw and objects which can cause serious personal injury WARNING THROWN OBJECTS This mach...

Page 8: ...gauge up or down until the left corner touches the slope See Figure 1 and Figure 2 5 If there is a gap below the gauge the slope is too steep for safe operation See Figure 2 above 1 5 d a s h e d l i...

Page 9: ...the negative battery terminal with the bolt and hex nut See Figure 3 1 3 Position the red rubber boot over the positive battery terminal to help protect it from corrosion Figure 3 1 NOTE If the batte...

Page 10: ...e washer with the cupped side down over the steering wheel and secure with the hex bolt See Figure 3 3 3 Place the steering wheel cap over the center of the steering wheel and push downward until it c...

Page 11: ...ing d Reinsert the shoulder screw with each gauge wheel into the index hole that leaves approximately inch between the bottom of the wheel and the pavement Refer to Leveling the Deck in the Maintenanc...

Page 12: ...r clarity Figure 4 1 Lawn Tractor controls and features are illustrated in and described on the following pages WARNING Read and follow all safety rules and instructions in this manual including the e...

Page 13: ...tches and Starting The Engine in the Operation section of this manual for detailed instructions regarding the Ignition Switch On Lights Start Figure 4 2 Shift Lever The shift lever is located on the l...

Page 14: ...n to its original position when it s not depressed Refer to the Operation section of this manual for detailed instructions regarding the drive pedal IMPORTANT Always set the parking brake when leaving...

Page 15: ...he clutch brake pedal and move the speed control lever out of the parking brake position and into a desired speed Setting the Cutting Height 1 Select the height position of the cutting deck by placing...

Page 16: ...rator s position for any reason disengage the blades place the shift lever in neutral engage the parking brake shut engine off and remove the key IMPORTANT When stopping the tractor for any reason whi...

Page 17: ...ally if a mulch kit or grass collector is installed For best results it is recommended that the first two laps be cut with the discharge thrown towards the center After the first two laps reverse the...

Page 18: ...d in the Engine Owner s Manual packed with your unit IMPORTANT Refer to the Engine Owner s Manual packed with your unit for information regarding the quantity and proper viscosity of motor oil Air Cle...

Page 19: ...ings If your tractor has not been put into use for an extended period of time charge the battery as follows Set your battery charger to deliver a maximum of 10 amperes If your battery charger is autom...

Page 20: ...e brake pedal is completely depressed or if the tractor s rear wheels can roll with the parking brake applied the brake is in need of adjustment See an authorized MTD Service Dealer to have your brake...

Page 21: ...m Precleaner P Replace Air Filter Element P Change Engine Oil and Replace Oil Filter P Clean Battery Terminals P P Lube Front Axles and Rims P P Clean Engine Cooling Fins P P Lube Pedal Pivot Points P...

Page 22: ...on the right fender 3 Remove the belt keeper rod from around the tractor s engine pulley by removing the self tapping screw A that secures it See Figure 7 1 Note Make a mental note what hole the other...

Page 23: ...per battery is installed on a vehicle i e car truck do NOT start the vehicle s engine when jump starting your tractor 5 Start the tractor as instructed in the Operation section of this manual 6 Set th...

Page 24: ...from the heavy side until it balances evenly NOTE When replacing the blade be sure to install the blade with the side of the blade marked Bottom or with a part number stamped in it facing the ground w...

Page 25: ...around the pulleys as instructed See Figure 7 8 10 Pull the right side of the belt and place the narrow V side of the belt into the PTO pulley 11 While holding the belt and pulley together rotate the...

Page 26: ...maged 5 Drain fuel tank Refill with clean fresh gasoline 6 Replace air cleaner paper element or clean foam precleaner is so equipped Engine overheats 1 Engine oil level low 2 Air flow restricted 1 Fil...

Page 27: ...1 05191 Discharge Chute Assembly NOTE This Operators Manual covers a range of product specifications for various models Characteristics and features discussed and or illustrated in this manual may not...

Page 28: ...ck Mulch Kit 490 850 0005 Cutting Blade Removal Tool OEM 190 607 Deluxe Tractor Sunshade OEM 190 679 Bumper 19A30003OEM Double Bagger Kit 42 46 490 900 0025 Deck Wash Kit 490 850 0008 Oil Siphon 490 2...

Page 29: ...Notes 11 29...

Page 30: ...period of two years The warranty period begins on the date the outdoor equipment is delivered to an ultimate purchaser or first placed into service Subject to certain conditions and exclusions as sta...

Page 31: ...cause of the need for repair or replacement of the part That notwithstanding any adjustment of a component that has a factory installed and properly operating adjustment limiting device is still elig...

Page 32: ...ese items may carry a separate manufacturer s warranty Refer to applicable manufacturer s warranty for terms and conditions b Log splitter pumps valves and cylinders have a separate one year warranty...

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