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Toro 74740 - User Manual

Toro 74740
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FormNo.3394-181RevA
TimeCutter
®
SS5425Riding
Mower
ModelNo.74740—SerialNo.315000001andUp
Registeratwww.Toro.com.
OriginalInstructions(EN)
*3394-181*A

Table of Contents

Questions and Answers

  • A
    Alison HughesSep 3, 2025
    Why is my Toro Lawn Mower engine losing power?
    • D
      Dr. Alexa Johnson DDSSep 3, 2025
      If your Toro Lawn Mower engine is losing power, consider these potential causes: excessive engine load, which can be resolved by reducing ground speed. A dirty air cleaner can restrict airflow, so clean it. Low oil level in the crankcase can also cause power loss, so add oil. Check for obstructions in the cooling fins and air passages and remove them. Inspect the spark plug(s) for damage or incorrect gap and replace if necessary. If there is incorrect fuel in the fuel tank, drain the tank and replace the fuel with the proper type. Finally, if the fuel filter is dirty, replace it.
  • T
    Tanya CollinsSep 1, 2025
    What to do if my Toro 74740 engine overheats?
    • M
      Micheal ScottSep 2, 2025
      If your Toro Lawn Mower engine is overheating, there are several potential causes. First, the engine load might be excessive, so reduce the ground speed. Second, check the oil level in the crankcase and add oil if it's low. Third, inspect the cooling fins and air passages under the engine blower housing for any obstructions and remove them. Lastly, a dirty air cleaner can contribute to overheating, so clean or replace the air-cleaner element.
  • P
    Peter GordonAug 31, 2025
    Why Toro 74740 blades do not rotate?
    • S
      Sharon BaileyAug 31, 2025
      If the blades on your Toro Lawn Mower aren't rotating, a worn, loose, or broken drive belt could be the cause (install a new one). Also, check if the drive belt is off the pulley (install the drive belt and check the adjusting shafts and belt guides for the correct position), or if the mower belt is worn, loose, or broken (install a new mower belt). If the power-takeoff (PTO) switch or PTO clutch is faulty you should contact an Authorized Service Dealer.
  • T
    Terry WallaceAug 29, 2025
    How to fix uneven cutting height on Toro 74740?
    • K
      Karen CoxAug 29, 2025
      Uneven cutting height with your Toro Lawn Mower can result from dull blades (sharpen them), bent cutting blades (install new ones), an unlevel mower (level it from side-to-side and front-to-rear), an incorrectly set anti-scalp wheel (adjust its height), a dirty mower underside (clean it), or incorrect tire pressure (adjust it). If a blade spindle is bent you should contact an Authorized Service Dealer.
  • E
    Eric ThompsonAug 27, 2025
    Why does my Toro 74740 engine lose power?
    • H
      holmestylerAug 27, 2025
      If your Toro Lawn Mower engine is losing power, it could be due to several reasons: excessive engine load (reduce the ground speed), a dirty air cleaner (clean it), low oil level in the crankcase (add oil), plugged cooling fins and air passages (remove the obstruction), or a faulty spark plug (install a new one). If the fuel-tank vent is blocked, there is dirt in the fuel filter, there is dirt, water, or stale fuel in the fuel system, or there is incorrect fuel in the fuel tank you should contact an Authorized Service Dealer.
  • T
    tjonesAug 26, 2025
    Why is my Toro 74740 Lawn Mower cutting height uneven?
    • W
      William MillerAug 26, 2025
      Uneven cutting height on your Toro Lawn Mower can stem from several issues. Start by sharpening the blade(s). If a cutting blade is bent, replace it. Ensure the mower is level from side to side and front to rear. Check the anti-scalp wheel setting and adjust its height if necessary. Clean the underside of the mower if it's dirty. Adjust the tire pressure to the correct level.
  • T
    timothywhiteAug 25, 2025
    Why does my Toro Lawn Mower engine not start, start hard, or fail to keep running?
    • K
      karlaarcherAug 25, 2025
      Several factors can cause your Toro Lawn Mower engine to fail to start, start with difficulty, or not stay running. It could be due to an empty fuel tank, so fill it up. The air cleaner might be dirty, in which case you should clean or replace it. Check if the spark plug wire is loose or disconnected and install it correctly. A pitted, fouled spark plug with an incorrect gap should be replaced with a new one, correctly gapped. Also, the fuel filter could be dirty, so replace it. The oil level in the crankcase may be low, so add oil.
  • S
    Shelley RussellAug 22, 2025
    Why does my Toro Lawn Mower engine not start?
    • R
      Roger RobinsonAug 22, 2025
      Your Toro Lawn Mower might not be starting due to several reasons. Check if the fuel tank is empty and fill it if needed. A dirty air cleaner can also cause this issue, so clean or replace it. Ensure the spark plug wire(s) is securely connected to the spark plug. Inspect the spark plug(s) for damage or incorrect gap and replace if necessary. Also, a clogged fuel filter can prevent the engine from starting, so replace it if it's dirty. If there is incorrect fuel in the fuel tank, drain the tank and replace the fuel with the proper type. Finally, ensure that the oil level in the crankcase is adequate, adding oil if it's low.

Toro 74740 Specifications

General IconGeneral
Cutting Width22 in
Drive TypeSelf-Propelled
Power SourceGasoline
Engine Displacement159 cc
Product TypeWalk-Behind Mower

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