Experienced gardeners share their insights in answering this question :
Several possible problems.
– SAFETY FIRST! Make sure the motor is OFF and then check the blades and belts to make sure they are all free to move. Could be something is jammed or a blade is bent.
– Ask yourself what happened immediately before the problem became evident. That should provide the lead to the solution.
– There should be a safety interlock that stops the mower from engaging if no one is in the operator’s seat. Check to see that it is working properly.
Let us know what you find.
Then we’ll all go kill grass.
How to Identify and Fix Common Gardening Problems ?
We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :
An improperly routed belt can cause the engine to die when the blades are engaged. To check belt routing, lower the deck to its lowest setting and remove the belt guard by the drive pulley. Next, lift the belt over the pulley and remove the pins that support the deck at the rear.
The spark plugs are worn or damaged
If you find that your lawnmower keeps dying, or keeps stalling while cutting grass, then inspect the spark plugs. Look for signs of damage or wear. Something as simple as a cracked porcelain insulator can mean an electrode has been damaged or burned away.
What`s happening? This is a normal function of the seat safety switch. With the blades engaged, weight from the operator allows the seat safety switch to keep the engine running.
The most common reason for a surging lawn mower engine is a blockage in the fuel supply, but there are other possibilities: Bad gas. Bad spark plug. Dirty/faulty carburetor.
Worn or broken blade drive belt – If the riding mower blades are not spinning, the blade drive belt may be worn or broken and unable to engage the blades. If the belt is intact, inspect it to see if it`s loose or slipping on the pulleys then replace it with a new one if necessary.
Belt-the number one cause for your blades not to engage is that your belt is either stretched or loose causing it to slip or fall off completely. Belt could have snapped also. When you are trying to process too much grass/leaves they could pack up under your deck and push off your belt.
As the fuel level drops, a vacuum begins to form in the fuel tank because air can get in to fill the space the consumed fuel occupied. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die.
The most common cause of a mower that runs for thirty minutes and then dies is a faulty armature. A faulty gas cap is the second most likely cause.
A dull blade is the number one reason for leaving uncut grass. The blunt blade will damage your lawn in no time at all; it tears the grass and leaves a jagged edge which turns the grass tips yellow. The recommended way to repair the yellow grass damage – regularly cut with a sharp lawnmower blade.
If the blades are engaged and you shift to reverse the mower is designed to either shut off the blades or the engine. Some units have ROS, this is an additional position on the key switch that can be activated if the operator feels the need to mow in reverse.
Unfortunately, you can overtighten your mower`s blade if you aren`t careful. This can damage the blade itself in some cases – the blade can even break after hitting a hard object if it`s overly tight. Apart from that, the bolt that`s holding the blade in place can also get damaged (this is often the case).
The most common cause of excessive vibration is an unbalanced blade. If you`ve recently had your blade sharpened, it`s possible the blade hasn`t been properly balanced during the sharpening process. To fix this, the blade should be removed, rebalanced and refitted.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
The factors that keep draining your lawn mower battery include damaged, loose, or corroded cables, an electronic drain, or cables that are attached loosely. Sometimes, it is as simple as the battery needing some maintenance. Other plausible reasons are faulty alternators, voltage regulators, and battery chargers.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
When I hold the bar down that engages the blade it will not cut?
Is the blade sharp?
I need to get the blade of the lawn mower sharpened.Any tips on how to disconnect the blade fropm the lawn mower?
There is a jig that you can buy that makes this job SO much eaiser. It is a universal jig that clamps onto the deck and keeps the blade from spinning so you can use a ratchet to remove the nut holding the blade on. One name brand is called a “Blade Hog”. You should be able to find one of these at one of the bog box hardware stores.
Hope this helps,
Lawn mower motor runs good, the drive wheels run good but the blade won’t stay enguaged. Thanks
Check your cable that controls the blade engagement.
When you engage the blade the motor dies. Why
Most likely it is a bad safety switch under the seat. Please vote yes if this is helpful.
When engaging blades engine dies after mowing over 2in sawn off tree stump
Take deck belt of and check that blades stiil turn by hand most likley bent or broken
Mower cranks and runs smooth until i try to engage blades or put mower in gear. it then stalls out
The seat switch is not making. You can start the mower but if you try to move it or cut, the switch is acting as if there is no operator present. Find it under the seat.
Starter seems to stay engaged once engine starts and mower will not move forward or backwards. try to engage blades and mower dies. small red wire on solenoid is suspect. key will not turn off engine.
Sounds like you have a Relay that is hanging up
Put new belt on riding lawn mower now blade wont engage
How many belt on a columbia lawn tractor
Lost traction when cutting grass
do they have a cluth?