What to do if my Toro 74991 Lawn Mower won't drive?
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.
Why Toro Lawn Mower blades do not rotate?
If the blades on your Toro Lawn Mower aren't rotating, it could be due to a worn, loose, or broken mower deck belt; in this case, install a new deck belt. Also, check if the mower deck belt is off a pulley and install the mower deck pulley, checking the idler pulley, idler arm, and spring for correct position and function. Inspect the pump drive belt for wear, looseness, or breakage, and check the belt tension or install a new belt. If the idler spring is broken or missing, replace it.
What to do if my Toro 74991 Lawn Mower engine does not start or keeps stopping?
If your Toro Lawn Mower engine is not starting, starts with difficulty, or fails to keep running, begin by checking the fuel tank to ensure it's full and that the fuel-shutoff valve is open. Verify the oil level in the crankcase and add oil if it's low. Make sure the throttle control is positioned midway between the SLOW and FAST settings. If these steps don't resolve the issue, inspect the fuel filter for dirt and replace it if needed. Other potential causes include a dirty air cleaner (clean or replace the element), a malfunctioning seat switch (check the indicator and replace the seat if necessary), or corroded/loose/damaged electrical connections (clean and reconnect). Also, check the spark plug for fouling or improper gapping, adjusting or replacing it as necessary, and ensure the spa...
Why does my Toro 74991 Lawn Mower pull to the left or right?
If your mower pulls to one side, the tracking may need adjustment, or the tire pressure in the drive tires may not be correct. Adjust the tracking and the tire pressure in the drive tires.
What to do if my Toro 74991 Lawn Mower machine vibrates abnormally?
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.
Why aren't the blades rotating on my Toro 74991?
If the blades on your Toro Lawn Mower aren't rotating, check the following: replace the deck belt if it is damaged, worn, loose, or broken. Install the mower belt on the 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 if the pump drive belt is worn, loose, or broken. Replace the spring if the idler spring is broken or missing.
Why Toro 74991 Lawn Mower engine loses power?
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.
What to do if the blades don't rotate on my Toro 74991 Lawn Mower?
If the blades on your Toro Lawn Mower do not rotate, 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, or replace the spring.
Why don't the blades rotate on my Toro 74991?
If the blades on your Toro Lawn Mower aren't rotating, it could be due to a worn, loose, or broken mower deck belt, the mower deck belt being off the pulley, a worn, loose, or broken pump drive belt, or a broken or missing idler spring. Try installing a new deck belt, installing the mower deck pulley and checking the idler pulley, idler arm, and spring for correct position and function, checking the belt tension or installing a new belt, and replacing the spring.
Why won't my Toro 74991 Lawn Mower starter crank?
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.
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 |
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