Toro 74991 - User Manual

Questions and Answers:

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Julie ContrerasAug 31, 2025
Why does my Toro Lawn Mower produce an uneven cutting height?
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  kathy73Sep 1, 2025
  An uneven cutting height with your Toro Lawn Mower can be caused by several factors. The blades might not be sharp, so sharpen them. Bent cutting blades can also cause this issue, so install new ones if necessary. Ensure the mower deck is level from side-to-side and front-to-rear. Clean the underside of the mower, as dirt buildup can interfere with cutting height. Adjust the tire pressure to the correct level. For a bent blade spindle, contact an Authorized Service Dealer.
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simondustinSep 1, 2025
What to do if my Toro 74991 produces an uneven cutting height?
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  jennakerrSep 1, 2025
  An uneven cutting height with your Toro Lawn Mower can result from dull or bent blades; sharpen the blade(s) or install new cutting blade(s). Also, the mower deck might not be level; level the mower deck from side-to-side and front-to-rear. A dirty mower underside can also cause this issue; clean the underside of the mower. Incorrect tire pressure could also be the cause; adjust the tire pressure.
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barbara68Sep 1, 2025
Why is my Toro 74991 engine losing power?
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  hoopernatalieSep 1, 2025
  Your Toro Lawn Mower engine may lose power for several reasons. 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. Ensure the oil level in the crankcase is sufficient by adding oil if it's low. Lastly, check if the cooling fins and air passages above the engine are plugged and remove any obstructions.
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Sarah KingSep 1, 2025
How to fix an uneven cutting height on my Toro Lawn Mower?
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  Sharon PorterSep 2, 2025
  If your Toro Lawn Mower is producing an uneven cutting height, try sharpening the blades, installing new cutting blades, leveling the mower deck from side-to-side and front-to-rear, cleaning the underside of the mower, or adjusting the tire pressure. If the issue persists, contact an Authorized Service Dealer.
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Katrina JenkinsSep 18, 2025
Why is the malfunction indicator light (MIL) on in my Toro 74991?
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  jose83Sep 18, 2025
  The malfunction indicator light may come on for several reasons: * The engine might be too hot; turn the engine off and let it cool. * There might be old gas in the gas tank; use new gas. * The fuel-shutoff valve may not be open completely; open the fuel-shutoff valve. * The air cleaner might be dirty; make sure that the air cleaner and precleaner are clean, and replace if necessary. * The battery might not be charged; charge or replace the battery. * There might be low voltage from the battery; ensure a good 12–volt battery is being used and is fully charged. * A fuse might be blown; 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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michael73Sep 2, 2025
What to do if my Toro 74991 Lawn Mower won't drive?
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  Perry ClarkSep 2, 2025
  If your Toro Lawn Mower isn't driving, check these items: * Ensure the bypass valves are tightly closed. * Change the pump belt if it is worn, loose, or broken. * Change the pump belt if it is off a pulley. * Replace the idler spring if it is broken or missing. * Add hydraulic oil to the reservoirs or allow it to cool down if the hydraulic oil level is low or too hot.
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Mrs. Kelsey AlvaradoSep 3, 2025
How to fix a starter that won't crank on my Toro 74991 Lawn Mower?
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  jacquelinewagnerSep 3, 2025
  If the starter on your Toro Lawn Mower won't crank, check these items: * Ensure the blade-control switch is disengaged. * Engage the parking brake. * Move the motion-control levers to the NEUTRAL-LOCK position. * Make sure you are sitting in the operator’s seat. * Charge the battery if it's dead. * Check the electrical connections for good contact. * Replace the fuse if it's blown.
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cmcdowellSep 3, 2025
How to fix uneven cutting height on my Toro 74991 Lawn Mower?
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  Jesse SmithSep 3, 2025
  If the cutting height is uneven on your Toro Lawn Mower, consider these possibilities: * Sharpen the blade(s) if they are not sharp. * Install a new cutting blade(s) if the current ones are bent. * Level the mower from side-to-side and front-to-rear. * Adjust the anti-scalp wheel height if an anti-scalp roller (if applicable) is not set correctly. * Clean the underside of the mower deck if it is dirty. * Adjust the tire pressure if it is incorrect.
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Ross GonzalezSep 3, 2025
Why does the engine lose power in my Toro 74991 Lawn Mower?
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  scottbrandonSep 3, 2025
  If your Toro Lawn Mower engine loses power, first reduce the ground speed, as the engine load may be excessive. Next, clean the air-cleaner element. If the oil level in the crankcase is low, add oil. Remove any obstructions from the cooling fins and air passages above the engine. Clean or replace the fuel cap if the vent hole is plugged. Finally, replace the fuel filter if it is dirty.

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