Toro 74991 - User Manual

Questions and Answers

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bjohnsonAug 28, 2025
Why won't my Toro 74991 Lawn Mower starter crank?
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  pbrownAug 28, 2025
  If the starter on your Toro Lawn Mower doesn't crank, there are several possible reasons. First, ensure the blade control switch (PTO) is disengaged and the parking brake is set. Also, make sure the drive levers are in the neutral lock position and that you are seated on the seat. If these aren't the problem, check if the battery is dead and charge it if necessary. Inspect the electrical connections for corrosion or looseness, and replace the fuse if it's blown.
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christyhamptonSep 12, 2025
What to do if my Toro 74991 Lawn Mower machine vibrates abnormally?
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  Mr. Jacob HuynhSep 13, 2025
  Abnormal vibrations in your Toro Lawn Mower can stem from several issues. Start by checking the cutting blades for bending or imbalance and install new cutting blade(s) if necessary. Ensure the blade mounting bolt and engine mounting bolts are tightened. Also, inspect the engine pulley, idler pulley, or blade pulley for looseness and tighten the appropriate pulley.
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Marissa WallAug 29, 2025
Why does my Toro 74991 Lawn Mower engine not start?
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  thomas22Aug 29, 2025
  If your Toro Lawn Mower engine is not starting, starts with difficulty, or stops running, try the following: * Fill the fuel tank. * Open the fuel-shutoff valve. * Add oil to the crankcase. * Ensure 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; 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 make the appropriate connections. * Adjust or replace the spark plug. * Check the spark-plug wire connection.
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Anthony HarringtonAug 29, 2025
Why is the starter not cranking on my Toro 74991 Lawn Mower?
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  Troy BanksAug 29, 2025
  If the starter on your Toro Lawn Mower isn't cranking, there are several potential causes. First, ensure the blade-control switch is disengaged and the parking brake is engaged. Also, make sure the motion-control levers are in the NEUTRAL-LOCK position and that you are sitting in the operator’s seat. If these aren't the issue, check if the battery is dead and needs charging. Corroded or loose electrical connections can also prevent cranking, so check them for good contact. A blown fuse could be the culprit, so replace it if necessary. If none of these steps work, a relay or switch may be damaged, requiring you to contact an Authorized Service Dealer.
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Michele LewisSep 23, 2025
What does it mean when the Malfunction Indicator Light (MIL) comes on in my Toro 74991?
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  Virginia PotterSep 23, 2025
  If the Malfunction Indicator Light (MIL) comes on in your Toro Lawn Mower, consider the following: * Turn the engine off and let it cool if the engine is too hot. * Use new gas if there is old gas in the gas tank. * Open the fuel shutoff valve completely if it is not fully open. * Ensure that the air cleaner and precleaner are clean; replace if necessary. * Charge or replace the battery if it is not charged. * Ensure a good 12 volt battery is being used and is fully charged if the battery voltage is low. * Check and replace any blown fuses.
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Dana LutzSep 15, 2025
Why Toro Lawn Mower vibrates abnormally?
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  Heidi BaileySep 15, 2025
  Abnormal vibration in your Toro Lawn Mower could be due to several reasons: * Bent or unbalanced cutting blades require replacement with new ones. * A loose blade mounting bolt needs tightening. * Loose engine mounting bolts should also be tightened. * Check and tighten any loose engine pulley, idler pulley, or blade pulley. For a damaged engine pulley, bent blade spindle, or loose/worn motor mount, it is recommended to contact an Authorized Service Dealer.
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Casey TateSep 23, 2025
Why is there abnormal vibration in my Toro 74991 Lawn Mower?
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  Christopher LawsonSep 23, 2025
  Abnormal vibration in your Toro Lawn Mower can stem from several causes. Check the cutting blades for bending or imbalance; replace them if necessary. Tighten the blade mounting bolt and the engine mounting bolts. Also, tighten the engine pulley, idler pulley, or blade pulley as needed.
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Jessica StanleySep 23, 2025
Why is my Toro 74991 vibrating so much?
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  Shelley LopezSep 23, 2025
  If your Toro Lawn Mower is vibrating abnormally, several components could be the cause. Check the cutting blades for bending or imbalance and install new ones if necessary. Ensure the blade mounting bolt and the engine mounting bolts are tightened securely. Inspect the engine pulley, idler pulley, or blade pulley for looseness and tighten the appropriate pulley. For issues such as a damaged engine pulley, a bent blade spindle, or a loose/worn motor mount, contact an Authorized Service Dealer.
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Phillip TurnerAug 31, 2025
Why Toro 74991 Lawn Mower engine loses power?
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  Barbara BlankenshipAug 31, 2025
  If your Toro Lawn Mower engine is losing power, consider these potential causes. First, the engine load might be excessive, so reduce the ground speed. A dirty air cleaner can also cause power loss, so clean the air-cleaner element. Additionally, check the oil level in the crankcase and add oil if it's low. Finally, ensure the cooling fins and air passages above the engine are free from obstructions.
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Paul HutchinsonAug 31, 2025
Why Toro Lawn Mower machine does not drive?
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  Sherri WallaceAug 31, 2025
  If your Toro Lawn Mower isn't driving, start by checking that the bypass valves are closed tight. Inspect the pump belt for wear, looseness, or breakage, and change the belt if needed. Also, ensure the pump belt is properly on the pulley. If the idler spring is broken or missing, replace it. Finally, check the hydraulic-fluid level and add fluid to the reservoirs if it's low, or let it cool down if it's too hot.

Toro 74991 Specifications

General

Cutting Width	22 inches
Start Type	Recoil
Drive Type	Self-Propelled
Starting System	Recoil
Deck Material	Steel
Oil Capacity	20 oz
Cutting Height	1 inch to 4 inches
Mulch, Bag, Side Discharge	Mulch, Bag, Side Discharge
Wheel Size	8 in (20.3 cm) Front / 11 in (27.9 cm) Rear