Was mowing just fine for about 6 hours – then the blades just stopped spinning. Nothing stuck, stopped, re-started re-engaged PTO nothing..is it PTO switch or something else
It sound like the PTO clutch has died.
Test your PTO clutch. It should have a resistance of 1.7 to 2.5 ohms.
How to Identify and Fix Common Gardening Problems ?
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If the engine dies when the blades engage, it could be the result of a damaged safety switch. The first step in assessing the safety switch is to make sure it is plugged in securely. The switch is located underneath the seat, and you may have to remove the seat to reach it.
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.
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.
Your blades are too blunt.
If you notice lines in your lawn after you mow it, you should check to ensure that your blades are sufficiently sharp for cutting. To make sure that your blades are suitable, you should sharpen them between once and twice per season.
If the mowing deck is engaged and the unit is in reverse, the mower will shut down as part of a safety feature.
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 factors that are causing your lawn mower engine to seize are the lack of lubrication, overheating issues, or having a dirty air filter. It could also be due to the lack of use, fuel-related issues, or mechanical failures taking place.
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.
Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas. If this doesn`t work, you might need a new fuel filter.
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.
A strip of uncut grass left in the middle of mowing rows could signal that your lawnmower`s blades are unbalanced or that one or both of them was installed the wrong way. Lawnmower blades are beveled and specifically designed to attach in a certain fashion.
Clogged or Dirty Air Filters Dirty air filters are one of the most common reasons lawn mowers sputter. Dirt can be present in the apertures that lead from the carburetor and the fuel filter and interrupt the flow of fuel supply to the combustion chamber. You want to be sure to clean or replace dirty air filters.
A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.
If your riding lawn mower engine dies when you release the brake, there`s a good chance the mower`s seat switch is broken or unplugged. The seat switch stops the engine when it doesn`t detect an operator sitting on the seat to prevent the mower from moving without a driver.
A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.
If the riding lawn mower runs but the blades won`t cut the grass, the problem could be with the blade belt. Examine and replace the belt if you find it worn or broken. If the belt is okay, check the blade belt idler pulley, blade clutch cable and clutch lever assembly on tractors with manual blade actuators.
Clogged or Dirty Air Filters It is one of the most common problems that cause lawnmowers to sputter. The mowers take the air from the surrounding through air filters and mix it with fuel inside the engine. So, if the air filter is clogged or dirty, it will affect the flow of air into the carburetor.
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.
Electric lawnmowers may cut out for two main reasons: A faulty power switch or a loose cable connection. An overheating motor can cause the thermal cut out to trip.
A wide range of issues can cause a lawn mower to stall. Here`s one: Dull blades that force the engine to overwork. If the mower stalls through thick grass areas, try sharpening the blade to see if that fixes the problem.
An unbalanced blade spinning that fast will cause a significant amount of vibration, which will put stress on yout blade shaft, spindle, and even the engine. So if you want to get the most life out of your mower… keep the blades balanced! If playback doesn`t begin shortly, try restarting your device.