MTD Series 760-770 User Manual

MTD Series 760-770

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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.

OperatOr’s Manual

Model Series 760-770 Lawn Tractor

Form No. 769-09236

(November 1, 2013)

Questions and Answers:

R
Robert WilliamsonAug 13, 2025
Why won't my MTD 760-770 engine start?
- J
  Joseph BarnesAug 13, 2025
  If your MTD Lawn Mower engine won't start, several factors could be at play. First, ensure the PTO/Blade is disengaged by placing the knob or lever in the OFF position and the parking brake is engaged. Check that the spark plug wire is securely connected to the spark plug. Make sure the fuel tank isn't empty and contains clean, fresh gasoline (less than 30 days old). Activate the choke by placing the throttle control in the CHOKE position, or position the throttle lever to FAST. Inspect the spark plug for faults, cleaning, adjusting the gap, or replacing it as necessary. Clear any blockage in the fuel line and replace the fuel filter. If the engine is flooded, crank it with the throttle in the FAST position.
J
John BlakeAug 16, 2025
Why is my MTD Lawn Mower engine running erratically?
- A
  Anna AndersonAug 16, 2025
  An MTD Lawn Mower engine running erratically can stem from several causes. Ensure the throttle control is out of the CHOKE position. Check and tighten the spark plug wire. Clean any blockages in the fuel line, use clean, fresh gasoline, and replace the fuel filter if needed. Clear any blockage in the gas cap vent, replacing the cap if damaged. Drain the fuel tank and refill with clean, fresh gasoline if there's water or dirt in the fuel system. Finally, replace a dirty air cleaner paper element or clean the foam pre-cleaner, if equipped.
M
Matthew HooverAug 19, 2025
Why is my MTD 760-770 Lawn Mower overheating?
- G
  griffithadamAug 20, 2025
  If your MTD Lawn Mower engine is overheating, check the engine oil level and fill the crankcase with the correct amount and weight of oil. Also, ensure that airflow isn't restricted by cleaning grass clippings and debris from around the engine’s cooling fins and blower housing.
M
mtaylorAug 25, 2025
How to fix rough idling on my MTD 760-770 Lawn Mower?
- H
  huntersharonAug 25, 2025
  A rough idle in your MTD Lawn Mower engine could be due to a fouled or faulty spark plug, or one with a gap that's too wide; replace the spark plug and set the correct plug gap. Another potential cause is a dirty air cleaner; replace the air cleaner element and/or clean the pre-cleaner, if equipped.
E
Elizabeth BellAug 27, 2025
What to do if my MTD 760-770 will not mulch grass?
- T
  Tina BrownAug 27, 2025
  If your MTD Lawn Mower isn't mulching grass effectively, make sure the engine speed isn't too low by placing the throttle in the FAST position. Avoid mulching when the grass is wet. If the grass is excessively high, mow once at a high cutting height, then mow again at your desired height, or make a narrower cutting swath. A dull blade can also be the culprit, so sharpen or replace it.
C
Christopher DuncanAug 31, 2025
How to stop excessive vibration in my MTD 760-770?
- H
  heather53Aug 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. It may also be due to a damaged or bent cutting blade, in which case you should replace the blade.
D
Dean LynnSep 4, 2025
Why does my MTD 760-770 leave an uneven cut?
- K
  Katherine WrightSep 4, 2025
  An uneven cut with your MTD Lawn Mower can result from several factors. The deck may not be leveled properly, so perform a side-to-side deck adjustment. A dull blade can also cause this issue, so sharpen or replace the blade. Finally, check the tire pressure in all four tires to ensure they are even.
F
fred75Sep 8, 2025
What to do if MTD 760-770 engine hesitates at high RPM?
- K
  kimjonathanSep 8, 2025
  If your MTD Lawn Mower engine hesitates at high RPM, the spark plug gap may be too close. Remove the spark plug and reset the gap.

MTD Series 760-770 Specifications

General

Brand	MTD
Model	Series 760-770
Category	Lawn Mower
Language	English

Summary

Important Safe Operation Practices

General Operation

Covers safe operating procedures and general guidance.

Slope Operation

Details safe practices for operating on slopes.

Assembly & Set-Up

Tractor Set-Up

Connecting the Battery Cables

Attaching The Steering Wheel

Controls and Features

Ignition Switch

Clutch-Brake Pedal

Parking Brake

Maintenance & Adjustments

Engine Maintenance

Changing Engine Oil

Step-by-step guide for changing engine oil.

Lubrication

Operation

Safety Interlock Switches

Starting the Engine

Step-by-step guide to starting the tractor engine.

Driving The Tractor

How to drive the tractor safely.

Driving On Slopes

Safe driving practices on slopes.

Service

Cutting Deck Removal

Step-by-step guide to removing the cutting deck.

Jump Starting

Cutting Blades

Inspection, removal, and sharpening of cutting blades.

Changing the Deck Belt

Procedure for changing the deck belt.

Troubleshooting

Engine fails to start

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