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Toro 74389 - User Manual

Toro 74389
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FormNo.3381-467RevB
TimeCutter
®
ZS4200SRiding
Mower
ModelNo.74389—SerialNo.314000001andUp
Registeratwww.Toro.com.
OriginalInstructions(EN)
*3381-467*B

Table of Contents

Questions and Answers

  • M
    masonvargasSep 23, 2025
    Why does my Toro 74389 have abnormal vibration?
    • V
      Vincent LyonsSep 23, 2025
      Abnormal vibration in your Toro Lawn Mower can be caused by: * Loose engine mounting bolts, tighten them. * A loose engine pulley, idler pulley, or blade pulley, tighten the appropriate pulley. * Damaged engine pulley, in this case contact an Authorized Service Dealer. * Bent or unbalanced cutting blade(s), install a new cutting blade(s). * Loose blade mounting bolt, tighten the blade mounting bolt. * If a blade spindle is bent, contact an Authorized Service Dealer.
  • A
    Anthony GlassSep 23, 2025
    What to do if my Toro 74389 vibrates abnormally?
    • J
      Justin MendezSep 23, 2025
      If your Toro Lawn Mower vibrates abnormally, inspect the following: bent or unbalanced cutting blades (install new ones), loose blade mounting bolt (tighten it), loose engine mounting bolts (tighten them), or a loose engine pulley, idler pulley, or blade pulley (tighten the appropriate pulley). For a damaged engine pulley, bent blade spindle, or loose/worn motor mount, contact an Authorized Service Dealer.
  • D
    david88Aug 31, 2025
    Why my Toro 74389 engine does not start?
    • R
      roberthaynesAug 31, 2025
      If your Toro Lawn Mower's engine doesn't start, starts with difficulty, or won't stay running, several factors could be at play. First, ensure the fuel tank isn't empty by filling it. If your model has a choke, make sure it's turned on. A dirty air cleaner can also cause issues, so clean or replace it. Check that the spark plug wire is securely connected to the spark plug. Inspect the spark plug itself; if it's damaged or improperly gapped, replace it with a new one. Also, check for a dirty fuel filter and replace if needed. If there is incorrect fuel in the fuel tank, drain the tank and replace the fuel with the proper type. Finally, verify that the oil level in the crankcase is sufficient and add oil if low.
  • E
    Erica SmithAug 25, 2025
    Why is my Toro 74389 cutting height uneven?
    • M
      Michelle WatersAug 25, 2025
      Uneven cutting height with your Toro Lawn Mower can occur for several reasons. Start by sharpening the blade(s) or replacing them if bent. Ensure the mower is level from side to side and front to rear. Check and adjust the anti-scalp wheel height if it's not set correctly. Clean the underside of the mower if it's dirty. Adjust the tire pressure if it's incorrect. If a blade spindle is bent, contact an Authorized Service Dealer.
  • J
    John WhiteAug 25, 2025
    What to do if my Toro 74389 Lawn Mower blades do not rotate?
    • B
      Blake LopezAug 26, 2025
      If the blades on your Toro Lawn Mower do not rotate, first check the drive belt. If it is worn, loose, or broken, install a new one. If the drive belt is off of the pulley, install it and check the adjusting shafts and belt guides for the correct position. If the Power Take-Off (PTO) switch or PTO clutch is faulty, contact an Authorized Service Dealer. Finally, if the mower belt is worn, loose, or broken, install a new mower belt.
  • A
    arosarioAug 26, 2025
    Why does my Toro 74389 Lawn Mower engine not start?
    • L
      Lori RussellAug 26, 2025
      Several factors can cause this issue. Ensure the fuel tank isn't empty by filling it. If your model has a choke, make sure it's on. A dirty air cleaner can also be the culprit, so clean or replace it. Check that the spark-plug wire(s) is securely connected to the spark plug. Inspect the spark plug(s) for damage or incorrect gap, replacing if necessary. Also, a clogged fuel filter may prevent starting, so replace it. Low oil level in the crankcase may also be the reason, add oil to the crankcase.
  • V
    Victoria GambleAug 27, 2025
    What to do if my Toro 74389 Lawn Mower cutting height is uneven?
    • C
      Cheryl MillerAug 27, 2025
      Uneven cutting height on your Toro Lawn Mower can be caused by several factors. Start by sharpening the blade(s). If a cutting blade(s) is bent, replace it. Ensure the mower is level from side-to-side and front-to-rear. If applicable, adjust the anti-scalp wheel height. Clean the underside of the mower deck. Adjust the tire pressure.
  • A
    Adam DeckerAug 27, 2025
    Why won't the blades rotate on my Toro Lawn Mower?
    • E
      Emily ThompsonAug 27, 2025
      If the blades on your Toro Lawn Mower won't rotate, it could be due to a worn, loose, or broken drive belt; install a new drive belt. Also, check if the drive belt is off of the pulley; install the drive belt and check the adjusting shafts and belt guides for the correct position. The mower belt may be worn, loose, or broken so install a new mower belt.
  • M
    Matthew CarterAug 27, 2025
    Why does my Toro 74389 engine not start, start hard, or fail to keep running?
    • C
      Christopher BakerAug 28, 2025
      Several factors can cause this issue. First, ensure the fuel tank isn't empty; if it is, fill it. If your model has a choke, make sure it's on. Check the air cleaner and replace or clean it if it's dirty. Ensure the spark plug wire(s) are securely connected to the spark plug. Inspect the spark plug(s) for pitting, fouling, or incorrect gap, and replace if necessary. Check the fuel filter for dirt and replace it if needed. Also, ensure that you have the correct fuel type in the fuel tank. Finally, verify that the oil level in the crankcase is sufficient and add oil if it's low.
  • D
    Donna AndersonAug 28, 2025
    Why Toro Lawn Mower engine does not start?
    • J
      Jose ClineAug 28, 2025
      Several factors can prevent your Toro Lawn Mower's engine from starting. It could be as simple as an empty fuel tank; in this case, fill the fuel tank. Other potential causes include a missing choke (move the choke lever to On), a dirty air filter (clean or replace it), a loose or disconnected spark-plug wire (secure the wire to the spark plug), a faulty spark plug (replace with a new, correctly gapped one), a dirty fuel filter (replace it), incorrect fuel type (drain and replace with the proper type), or low oil level (add oil to the crankcase). If the problem persists, there might be dirt, water, or stale fuel in the fuel system, and you should contact an Authorized Service Dealer.

Toro 74389 Specifications

General IconGeneral
BrandToro
Model74389
CategoryLawn Mower
LanguageEnglish

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