Whenever the blade is engaged, it rotates on a crankshaft to cut the grass . But if there is interference in this rotation, the engine can overload and shut off or lose power. Check the crankshaft connection to see if it rotates freely. ... The blade should be free of dirt, grass or debris as well.
Why does my lawn mower dies when I engage the blades?
If a pulley doesn't spin freely, it can cause the engine to die when the blades are engaged. ... The pulleys in your lawn tractor are driven by the drive belt, and turn the spindles. If a pulley doesn't spin freely, it can cause the engine to die when the blades are engaged.
Why is my mower losing power?
The primary reason your push mower may lose power is often dirt . There are two major locations to check out – the air cleaner elements, and the fuel system. ... The second possibility is dirt and water in the fuel system. This will cause build-up in the carburetor, inefficient combustion, sputtering, and power loss.
How do I know if my PTO clutch is bad?
What does a bad PTO clutch look like? “Normally” when a clutch is going bad it will start to show when you engage the PTO . A common symptom would be for the clutch to be slow to engage if it's been running for a while and is hot. Once engaged they usually stay engaged until you shut them off.
What causes a lawn mower to run sluggish?
Maintenance lapses become evident when the mower turns over slowly or begins to falter at start-up. The fault could be a dirty spark plug , air filter or carburetor, or it could be related to the quality of the gasoline used. Slow starting can also be the result of a failure to clean the blades.
Why won't my riding mower blades engage?
Why won't my riding mower blades engage? Your riding mower blades won't engage if the clutches are broken and the cable is damaged . Additionally, if the deck belt is damaged, the pulley system is frozen, and the battery has a weak charge, the chances are that your riding mower blades won't engage.
Why does my lawn mower sound like it's going to stall?
Check and clean the vent . Surging is also caused by water that got into the fuel. A mower left in a heavy rain or condensation on a hot summer day can choke the engine. Empty the gas tank, properly dispose of the old fuel and try a fresh batch of gasoline.
What causes a lawnmower engine to rev up and down?
A lawnmower that hunts and surges may be experiencing something as simple as an airflow issue. If the air that the engine requires to run is blocked , especially sporadically, it can cause the engine to slow down. When the blockage moves or clears, the engine may suddenly rev up in response.
Why is my lawn mower turning over but not starting?
The most common reason for why your riding mower will turn over but not start is likely due to bad gas or a dirty carburetor . You can usually fix the problem by removing and cleaning out the carburetor and making sure that your gas is fresh.
Can a bad spark plug cause a mower to stall?
Faulty spark plug warning signs
The engine misfires or runs rough. The engine starts, but stalls shortly after.
How do you check an electric PTO clutch?
Pull off the main power wire that goes to the PTO clutch assembly. This is located on the clutch side. Turn the wire jack toward you, but pull yourself back away from the deck as far as possible. With the battery connected and engine turned off, place the negative alligator lead of a test light to a ground source.
Why is my mower idling low?
A lawn mower's engine continues to run at low speeds when idling, pulling just enough fuel and air into the carburetor to keep combustion going. If the mower doesn't idle properly, it's usually because of a loss of fuel or air in the carburetor at these low speeds.
