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Toro 74939 - User Manual

Toro 74939
68 pages
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FormNo.3375-654RevB
ZMaster
®
Professional6000
SeriesRidingMower
with60inand70inTURBOFORCE
®
Side
DischargeMower
ModelNo.74939—SerialNo.313000001andUp
ModelNo.74940—SerialNo.313000001andUp
Registeratwww.Toro.com.
OriginalInstructions(EN)
*3375-654*B

Table of Contents

Questions and Answers

  • A
    Amy HowardAug 17, 2025
    Why will my Toro Lawn Mower engine not start, starts hard, or fails to keep running?
    • A
      Andrew BurtonAug 17, 2025
      If your Toro Lawn Mower engine will not start, starts hard, or fails to keep running, try these steps: Fill the fuel tank. Open the fuel shutoff valve. Add oil to the crankcase. Be sure that the throttle control is midway between the “SLOW” and “FAST” positions. Replace the fuel filter. Clean or replace the air cleaner element. Check the seat switch indicator and replace the seat if needed. Check the electrical connections for good contact; clean the connector terminals thoroughly with electrical contact cleaner, apply dielectric grease, and reconnect. Clean, adjust, or replace the spark plug. Check the spark plug wire connection. If the issue continues, contact an Authorized Service Dealer.
  • J
    Jennifer SwansonAug 20, 2025
    Why does the engine lose power in my Toro Lawn Mower?
    • R
      Robert MitchellAug 20, 2025
      If your Toro Lawn Mower engine loses power, try the following: Reduce the ground speed. Clean the air cleaner element. Add oil to the crankcase. Remove any obstruction from the cooling fins and air passages. Clean or replace the fuel cap. Replace the fuel filter. If the problem continues, it is recommended to contact an Authorized Service Dealer.
  • S
    Susan MendozaAug 22, 2025
    How to fix uneven cutting height with my Toro 74939 Lawn Mower?
    • D
      danielfloresAug 22, 2025
      If the mowing with your Toro Lawn Mower is resulting in uneven cutting height, try the following: Sharpen the blades. Install new cutting blades. Level the mower deck from side-to-side and front-to-rear. Clean the underside of the mower. Adjust the tire pressure. If the issue persists, contact an Authorized Service Dealer.
  • R
    robert94Aug 26, 2025
    Why don't the blades rotate on my Toro Lawn Mower?
    • K
      Kenneth VillanuevaAug 26, 2025
      If your Toro Lawn Mower blades do not rotate, you can try the following: Install a new deck belt. Install the mower deck pulley and check the idler pulley, idler arm, and spring for correct position and function. Check the belt tension or install a new belt. Replace the spring.
  • J
    joshua84Aug 28, 2025
    What to do if the malfunction Indicator Light (MIL) comes on in my Toro Lawn Mower?
    • A
      Amy HendricksAug 28, 2025
      If the malfunction indicator light (MIL) comes on in your Toro Lawn Mower, try the following: Turn the engine off and let it cool. Use new gas. Open the fuel shut-off valve. Make sure that the air cleaner and precleaner are clean, and replace them if necessary. Charge or replace the battery. Ensure that a good 12 volt battery is being used and is fully charged. Check and replace any blown fuses. If the problem persists, it is best to contact an Authorized Service Dealer.
  • A
    ahamiltonAug 31, 2025
    What to do if the starter does not crank on my Toro Lawn Mower?
    • T
      toddpearsonAug 31, 2025
      If the starter of your Toro Lawn Mower does not crank, try the following: Move the blade control switch (PTO) to disengaged. Set the parking brake. Ensure that the drive levers are in the neutral lock position. Sit on the seat. Charge the battery. Check the electrical connections for good contact. Replace the fuse. If the problem persists, contact an Authorized Service Dealer.
  • B
    Billy AndersonSep 2, 2025
    What to do if the engine overheats on my Toro 74939 Lawn Mower?
    • G
      gliuSep 3, 2025
      If your Toro Lawn Mower engine overheats, try these steps: Reduce the ground speed. Add oil to the crankcase. Remove any obstruction from the cooling fins and air passages.
  • K
    Kirk FernandezSep 5, 2025
    Why does my Toro Lawn Mower pull left or right (with levers fully forward)?
    • D
      Destiny WallerSep 5, 2025
      If your Toro Lawn Mower pulls left or right (with levers fully forward), you can try to adjust the tracking and adjust the tire pressure in the drive tires.
  • P
    phillip43Sep 8, 2025
    Why is there abnormal vibration in my Toro Lawn Mower?
    • M
      Marco MillerSep 8, 2025
      If your Toro Lawn Mower experiences abnormal vibration, try the following: Install new cutting blade(s). Tighten the blade mounting bolt. Tighten the engine mounting bolts. Tighten the appropriate pulley. If the issue continues, contact an Authorized Service Dealer.
  • M
    Michael WashingtonSep 12, 2025
    What to do if the clutch will not engage on my Toro 74939 Lawn Mower?
    • T
      tjacobsSep 12, 2025
      If the clutch will not engage on your Toro Lawn Mower, try the following: Replace the fuse and check the coil resistance, battery charge, charging system, and wiring connections and replace if necessary. Replace the clutch. Repair or replace the clutch lead wire or electrical system, and clean the connector contacts. Remove the shim or replace the clutch.

Toro 74939 Specifications

General IconGeneral
BrandToro
Model74939
CategoryLawn Mower
LanguageEnglish

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