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MTD 13AJ795S059 - User Manual

MTD 13AJ795S059
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MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
Printed In USA
Safe Operation Practices • Set-Up • Operation • Maintenance • 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 MAY RESULT IN PERSONAL INJURY.
Op e r a t O r s Ma n u a l
Hydrostatic Lawn Tractor — Model Series 790
Form No. 769-05520
(January 6, 2010)
Hydrostatic Lawn Tractor — Model Series 790

Questions and Answers

  • N
    Nicholas WeaverAug 16, 2025
    How to fix rough idling MTD 13AJ795S059 engine?
    • D
      deniseruizAug 16, 2025
      A rough idling MTD Lawn Mower engine can be caused by: * A fouled or faulty spark plug, or a gap that is too wide: replace the spark plug and set the plug gap. * A dirty air cleaner: replace the air cleaner element and/or clean the pre-cleaner, if equipped.
  • F
    fericksonAug 19, 2025
    Why MTD Lawn Mower engine runs erratic?
    • A
      Aaron FlemingAug 20, 2025
      An MTD Lawn Mower engine may run erratically due to several reasons: * The unit might be running with the CHOKE activated: move the throttle control out of the CHOKE position. * Spark plug wires might be loose: connect and tighten the spark plug wire. * The fuel line might be blocked, or the fuel might be stale: clean the fuel line and fill the tank with clean, fresh gasoline; replace the fuel filter if equipped. * The vent in the gas cap might be plugged: clear the vent or replace the cap if damaged. * There might be water or dirt in the fuel system: drain the fuel tank and refill with clean, fresh gasoline. * The air cleaner might be dirty: replace the air cleaner paper element or clean the foam precleaner, if equipped.
  • J
    John CarrollAug 25, 2025
    What to do if MTD 13AJ795S059 Lawn Mower will not mulch grass?
    • A
      Anne MartinAug 25, 2025
      If your MTD lawn mower won't mulch grass, consider the following: * The engine speed might be too low: place the throttle in the FAST (rabbit) position. * The grass might be wet: do not mulch when the grass is wet. * The grass might be excessively high: mow once at a high cutting height, then mow again at the desired height or make a narrower cutting swath. * The blade might be dull: sharpen or replace the blade.
  • U
    uellisAug 27, 2025
    Why MTD 13AJ795S059 engine overheats?
    • T
      timothy99Aug 28, 2025
      Your MTD Lawn Mower engine may overheat due to: * Low engine oil level: fill the crankcase with the proper amount and weight of oil. * Restricted airflow: clean grass clippings and debris from around the engine’s cooling fins and blower housing.
  • M
    mikeyatesAug 31, 2025
    What causes excessive vibration in MTD Lawn Mower?
    • B
      Brian MyersAug 31, 2025
      Excessive vibration in your MTD Lawn Mower can be caused by: * A loose or unbalanced cutting blade: tighten the blade and spindle, and balance the blade. * A damaged or bent cutting blade: replace the blade.
  • B
    Benjamin HardySep 4, 2025
    Why MTD Lawn Mower makes uneven cut?
    • R
      robert22Sep 4, 2025
      An uneven cut with your MTD Lawn Mower can be due to: * The deck not being leveled properly: perform a side-to-side deck adjustment. * A dull blade: sharpen or replace the blade. * Uneven tire pressure: check the tire pressure in all four tires.
  • B
    bridget52Sep 7, 2025
    What to do if MTD Lawn Mower engine hesitates at high RPM?
    • J
      John WatsonSep 7, 2025
      If your MTD Lawn Mower engine hesitates at high RPM, it might be because the spark plug gap is too close. Remove the spark plug and reset the gap.
  • J
    Justin JohnsonNov 11, 2025
    Why MTD Lawn Mower engine fails to start?
    • M
      molinajustinNov 11, 2025
      Your MTD Lawn Mower engine may fail to start due to several reasons: * The PTO/Blade might be engaged: place the knob (or lever) in the disengaged (OFF) position. * The spark plug wire might be disconnected: connect the wire to the spark plug. * The fuel tank might be empty or contain stale fuel: fill the tank with clean, fresh (less than 30 days old) gas. * The choke might not be activated: place the throttle control in the CHOKE position. * The spark plug might be faulty: clean, adjust the gap, or replace the plug. * The fuel line might be blocked: clean the fuel line and replace the fuel filter. * The engine might be flooded: crank the engine with the throttle in the FAST position. * The parking brake might not be engaged: engage the parking brake. * The throttle con...

MTD 13AJ795S059 Specifications

General IconGeneral
Cutting Width46 in
Start TypeElectric
Weight520 lb
EngineBriggs & Stratton Intek
Engine BrandBriggs & Stratton
Number of Blades2
Transmission TypeHydrostatic
Deck MaterialSteel
Drive SystemRear Wheel Drive
Cutting Height AdjustmentLever
Cutting Height1.25 - 3.75 inches
Wheel Size15 inches front, 20 inches rear

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