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6. 

Mower blades are sharp. Wrap the blade or wear gloves, 

and use extra caution when servicing them.

7. 

Keep all nuts, bolts, and screws tight to be sure the 

equipment is in safe working condition. 

8. 

Never tamper with the safety interlock system or other 

safety devices. Check their proper operation regularly.

9. 

After striking a foreign object, stop the engine, disconnect 

the spark plug wire(s) and ground against the engine. 

Thoroughly inspect the machine for any damage. Repair 

the damage before starting and operating.

10.  Never attempt to make adjustments or repairs to the 

machine while the engine is running.

11.  Grass catcher components and the discharge cover are 

subject to wear and damage which could expose moving 

parts or allow objects to be thrown. For safety protection, 

frequently check components and replace immediately 

with original equipment manufacturer’s (O.E.M.) parts only, 

listed in this manual. “Use of parts which do not meet the 

original equipment specifications may lead to improper 

performance and compromise safety!”

12.  Do not change the engine governor settings or over-speed 

the engine. The governor controls the maximum safe 

operating speed of the engine. 

13.  Maintain or replace safety and instruction labels, as 

necessary. 

14.  Observe proper disposal laws and regulations for gas, oil, 

etc. 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 hours of operation. At the end of the 

Average Useful 

Life

 have the machine inspected annually by an authorized 

service dealer to ensure that all mechanical and safety 

systems are working properly and not worn excessively. 

Failure to do so can result in accidents, injuries or death.

Do not modify engine

To avoid serious injury or death, do not modify engine in any 

way. Tampering with the governor setting can lead to a runaway 

engine and cause it to operate at unsafe speeds. Never tamper 

with factory setting of engine governor.

Notice Regarding Emissions

Engines which are certified to comply with California and federal 

EPA emission regulations for SORE (Small Off Road Equipment) 

are certified to operate on regular unleaded gasoline, and 

may include the following emission control systems: Engine 

Modification (EM), Oxidizing Catalyst (OC), Secondary Air 

Injection (SAI) and Three Way Catalyst (TWC) if so equipped.

Spark Arrestor

WARNING! 

This machine is equipped with an 

internal combustion engine and should not be used 

on or near any unimproved forest-covered, 

brushcovered or grass-covered land unless the 

engine’s exhaust system is equipped with a spark 

arrester meeting applicable local or state laws (if 

any).

If a spark arrester is used, it should be maintained in effective 

working order by the operator. 
A spark arrester for the muffler is available through your nearest 

engine authorized service dealer.

WARNING!

 

Your Responsibility—Restrict the use of this power machine to persons who read, understand and 

follow the warnings and instructions in this manual and on the machine. 

SAVE THESE INSTRUCTIONS!

Summary of Contents for Series 77K

Page 1: ...OW ALL SAFETY RULES AND INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE THIS MACHINE FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY Model Series 77K Lawn Tractor LES DISTRIBUTIONS RVI LIMITÉE 2955 JEAN BAPTISTE DESCHAMPS LACHINE QUEBEC H8T 1C5 MTD LLC P O BOX 361131 CLEVELAND OHIO 44136 0019 769 08780 1 3 13 ...

Page 2: ...t 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 The manufacturer reserves the ...

Page 3: ...movable parts Never operate this machine in bare feet or sandals 10 Be aware of the mower and attachment discharge direction and do not point it at anyone Do not operate the mower without the discharge cover or entire grass catcher in its proper place 11 Do not put hands or feet near rotating parts or under the cutting deck Contact with the blade s can amputate hands and feet 12 A missing or damag...

Page 4: ... up the slope or if you feel uneasy on it do not mow it For your safety use the slope gauge included as part of this manual to measure slopes before operating this machine on a sloped or hilly area If the slope is greater than 15 degrees as shown on the slope gauge do not operate this machine on that area or serious injury could result Do 1 Mow up and down slopes not across Exercise extreme cautio...

Page 5: ... c When practical remove gas powered equipment from the truck or trailer and refuel it on the ground If this is not possible then refuel such equipment on a trailer with a portable container rather than from a gasoline dispenser nozzle d Keep the nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete Do not use a nozzle lock open device e Exting...

Page 6: ...Agency EPA this product has an Average Useful Life of seven 7 years or 270 hours of operation At the end of the Average Useful Life have the machine inspected annually by an authorized service dealer to ensure that all mechanical and safety systems are working properly and not worn excessively Failure to do so can result in accidents injuries or death Do not modify engine To avoid serious injury o...

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 machine may pick up and throw and objects which can cause serious personal injury BYSTANDERS Keep bystanders helpers children and pets at least 75 feet from the machine while it is in operation WARNING S...

Page 8: ...t 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 n e Slope Gauge Figure 2 Figure 1 15 Slope 15 Slope WARNING Slopes are a major factor related to tip over and roll over accidents which can result in severe injury or death Do not operate machine on...

Page 9: ...o the negative battery terminal with the bolt and hex nut See Fig 3 1 3 Position the red rubber boot over the positive battery terminal to help protect it from corrosion NOTE If the battery is put into service after the date shown on top side of battery charge the battery as instructed in the Maintenance section your Operator s Manual prior to operating the tractor Shipping Brace Removal WARNING M...

Page 10: ... or knob screw if applicable at this time 5 To adjust the position of the seat loosen the hex screw or knob screw if applicable on the bottom of the seat Slide the seat forward or backward as desired Retighten the hex screw or knob screw if applicable See Fig 3 5 Knob Screw Adjust Hex Screw Adjust Attaching The Steering Wheel If the steering wheel for your tractor did not come attached the hardwar...

Page 11: ...oil level before operating Be careful not to overfill IMPORTANT It is important to NOT top off your fuel tank when filling with fuel Leave an expansion area available inside the fuel tank to allow for the fuel to expand and for proper ventilation Otherwise the unit may not run properly Fill the tank in accordance with Figure 3 6 Setting the Deck Gauge Wheels ifsoequipped Move the tractor on a firm...

Page 12: ...h Module Controls and Features 4 12 Lawn Tractor controls and features are illustrated in Fig 4 1 and described on the following pages WARNING Read and follow all safety rules and instructions in this manual including the entire Operation section before attempting to operate this machine Failure to comply with all safety rules and instructions may result in personal injury ...

Page 13: ...l have one of the following ignition switches Use Fig 4 3 to identify which switch your machine utilizes and follow these instructions for proper operation 3 Position Ignition Switch The ignition switch is activated to start the engine Insert key into the ignition switch and turn clockwise to the START position Release the key into the ON position once engine has fired See Fig 4 3A The engine will...

Page 14: ... the notches to the desired position Release the speed control lever and the clutch brake pedal NOTE The parking brake must be set if the operator leaves the seat with the engine running or the engine will automatically shut off Shift Lever The shift lever is located on the left side of the fender and has three positions FORWARD NEUTRAL and REVERSE The brake pedal must be depressed and the tractor...

Page 15: ... lever in Reverse WARNING Do not operate the tractor if the interlock system is malfunctioning This system was designed for your safety and protection Reverse Caution Mode Modelsequippedwithignitionswitchmodule WARNING Use extreme caution while operating the tractor in the REVERSE CAUTION MODE Always look down and behind before and while backing Do not operate the tractor when children or others a...

Page 16: ...ting deck NOTE On models so equipped the deck wheels are an anti scalp feature of the deck and are not designed to support the weight of the cutting deck Refer to Leveling in the Maintenance section of this manual for more detailed instructions regarding various deck adjustments Starting the Engine WARNING Do not operate the tractor if the interlock system is malfunctioning This system was designe...

Page 17: ...ever in NEUTRAL 2 Restart engine 3 Place speed control lever in highest speed position 4 Release clutch brake pedal fully 5 Depress clutch brake pedal 6 Place speed control lever in desired position 7 Place shift lever in either FORWARD or REVERSE and follow normal operating procedures Driving On Slopes Refer to the SLOPE GAUGE in the Important Safe Operation Practices section of the manual to hel...

Page 18: ...rates special blades already standard on the tractor in a process of recirculating grass clippings repeatedly beneath the cutting deck The ultra fine clippings are then forced back into the lawn where they act as a natural fertilizer Observe the following points for the best results when mulching Never attempt to mulch if the lawn is damp Wet grass tends to stick to the underside of the cutting de...

Page 19: ...p engine and remove key to prevent unintended starting Engine Lubricate the engine with motor oil as instructed in the Engine Owner Manual packed with your unit Pivot Points Linkage Lubricate all the pivot points on the drive system parking brake and lift linkage at least once a season with light oil Rear Wheels The rear wheels should be removed from the axles once a season Lubricate the axles and...

Page 20: ... this feature Use the Deck Wash System to rinse grass clippings from the deck s underside and prevent the buildup of corrosive chemicals Complete the following steps AFTER EACH MOWING 1 Drive the tractor to a level clear spot on your lawn near enough for your garden hose to reach CAUTION Make certain the tractor s discharge chute is directed AWAY from your house garage parked cars etc 2 Disengage ...

Page 21: ...he brake is in need of adjustment See an authorized service dealer to have your brakes properly adjusted IMPORTANT After cleaning your deck with the Deck Wash System return to the operator s position and engage the PTO Keep the cutting deck running for a minimum of two minutes allowing the underside of the cutting deck to thoroughly dry Adjustments WARNING Never attempt to make any adjustments whi...

Page 22: ... Points P P Check Spark Plug Condition Gap P P Replace Fuel Filter P 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 be applicable to all models MTD LLC reserves the right to change product specifications designs and equipment without notice and without incurring obligation IMPOR...

Page 23: ...nstalled from the top down Cutting Deck Removal NOTE Models equipped with a 38 inch deck have one deck idler pulley Models equipped with a 42 and 46 inch deck have two deck idler pulleys To remove the cutting deck proceed as follows 1 Place the PTO Blade Engage lever in the disengaged OFF position and engage the parking brake 2 Lower the deck by moving the deck lift lever into the bottom notch on ...

Page 24: ...ctive harm Wash hands after handling CAUTION If removing the battery disconnect the NEGATIVE Black wire from it s terminal first followed by the POSITIVE Red wire When re installing the battery always connect the POSITIVE Red wire its terminal first followed by the NEGATIVE Black wire 7 On 46 Decks Looking at the cutting deck from the left side of the tractor locate the deck support pin on the rea...

Page 25: ...eight hours Fuse One 20 AMP fuse is installed in your tractor s wiring harness to protect the tractor s electrical system from damage caused by excessive amperage If the electrical system does not function or your tractor s engine will not crank first check to be certain that the fuse has not blown It can be found at the rear of the unit underneath the fender located by the battery WARNING Always ...

Page 26: ...ley 5 Route the new belt as shown in Fig 7 10 6 Remount the belt guards removed earlier For 42 46 Decks To change or replace the deck belt on your tractor proceed as follows 1 Remove the deck as instructed earlier in this section 2 Remove the belt covers by removing the hex screws that fasten them to the deck See Fig 7 9 3 It may also be necessary to loosen the hex nut on the left idler pulley to ...

Page 27: ...25 Section 7 Service 27 Section 7 Service Figure 7 10 Deck Idler Pulley Engine Pulley Idler Bracket 38 Inch Deck Figure 7 11 42 46 Inch Deck ...

Page 28: ...ged 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 Fill crankcase with proper amount and weight of oil 2 Clean grass clippings and debris from around the engine s cooling fins and blower housing Engine hesitates at high RPM 1 Spark plug gap too close 1 Rem...

Page 29: ...type of ground engaging attachments e g tiller or moldboard plow Use of this type of equipment WILL void the tractor s warranty Model Number Description OEM 190 116 38 inch Deck Mulch Kit 19A30006OEM 42 inch Deck Mulch Kit 19A30005OEM 46 inch Deck Mulch Kit OEM 190 607 Deluxe Tractor Sunshade OEM 190 679 Bumper OEM 190 183 Deck Wheel Kit 38 OEM 190 180 Double Bagger Kit 38 19A30003OEM Double Bagge...

Page 30: ...as lubricants filters blade sharpening tune ups brake adjustments clutch adjustments deck adjustments and normal deterioration of the exterior finish due to use or exposure d Service completed by someone other than an authorized service dealer e MTD does not extend any warranty for products sold or exported outside of Canada including possessions and territories f Replacement parts that are not ge...

Page 31: ...E RESPECTIVE MANUFACTURERS SERVICE DEALERS Belts light bulbs clutch parts friction wheels grass bags tires seats rider deck wheels and cutting blades are covered by a 60 day limited warranty Batteries are warranted against defect for 90 days at 100 of their value and 50 of their value for the period between the 91st day and the 120th day Fuses shear bolts and blade adapters are considered consumab...

Page 32: ...ays If you have a question regarding your warranty coverage you should contact the MTD Consumer Group Inc Service Department In the U S A MTD LLC at P O Box 361131 Cleveland Ohio 44136 0019 or call 1 800 800 7310 or 1 330 220 4683 or log on to our Web site at www mtdproducts com In Canada MTD Products Limited Kitchener ON N2G 4J1 or call 1 800 668 1238 or log on to our Web site at www mtdcanada co...

Page 33: ...ligible for warranty coverage may be excluded from such warranty coverage if MTD Consumer Group Inc demonstrates that the outdoor equipment engine has been abused neglected or improperly maintained and that such abuse neglect or improper maintenance was the direct cause of the need for repair or replacement of the part That notwithstanding any adjustment of a component that has a factory installed...

Page 34: ...wnload a complete Parts Manual free of charge Refer to page 2 for more information regarding locating your model and serial numbers DESCRIPTION PART NO Drive Belt Mowing Deck 38 Deck 954 04062 Deck Blade 38 Deck 942 0610A Deck Spindle 38 Deck 918 04474A Battery 925 1707D Tire Front 15 x 6 x 6 Square Shoulder 734 1731 Tire Rear 20 x 8 x 8 Square Shoulder 734 1730 Hub Cap 931 0484A Fuel Tank Cap 951...

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