Table of Contents
How does an electric lawn mower clutch work?
Inside the disc shaped clutch is a magnetic coil. When the clutch receives power from the starter, the magnetic coil forces an armature into contact with the rotor. The rotor is attached to the crankshaft, and as the armature begins to spin it will turn a pulley that spins the mower’s blades.
How does a PTO clutch work on a lawn mower?
Driven by electricity provided by the mower’s 12-volt battery, the PTO clutch engages when its solenoid receives an electric spark. The PTO pulley is attached to the clutch and guides the belt that connects to the engine crankshaft pulley and rotates the blades of the mower that are located under the mower’s deck.
How the electromagnetic clutch brake operates?
How it works – Electromagnetic tooth clutches operate via an electric actuation but transmit torque mechanically. When current flows through the clutch coil, the coil becomes an electromagnet and produces magnetic lines of flux. This flux is then transferred through the small gap between the field and the rotor.
Should my PTO clutch spin freely?
Yes, the clutch pulley should turn freely when not engaged. It may have an electrical issue as well as bearing issue causing it to stall with no load and vibrate under a load.
Why does the PTO not engage?
If the PTO clutch is not getting power, if the clutch solenoid is defective, or if the clutch is worn out, the lawn mower blades will not engage. The PTO clutch is not repairable—if the clutch is defective, you must replace it. The PTO switch provides power to the PTO clutch. If the PTO switch is defective, replace it.
What does PTO stand for on a lawn mower?
A power take-off or power takeoff (PTO) is any of several methods for taking power from a power source, such as a running engine, and transmitting it to an application such as an attached implement or separate machine.
How do you create an electromagnetic clutch?
‘ clutches, actuate electrically but transmit torque mechanically. The basic design of an E.M. clutch consists of an electromagnetic coil within a metal housing (stator), a rotor connecting to the input source, and an armature that connects to the output source.
Why is an electromagnetic clutch fitted to the compressor?
Magnetic force locks the rotor and the armature plate together. This solid connection then allows the pulley to rotate the compressor crankshaft and operate the compressor. Compressor operation will continue until the electrical circuit is broken to the clutch coil, when the magnetic force is de-energized.
Why does my lawn mower stall when I engage the blades?
The most common causes for a mower to stop when blades are engaged include the mower being in reverse, faulty safety switches, bad fuel, or clogged fuel lines. Trying to engage the blades in tall or wet grass can also cause the mower to die. While fuel can be a common issue, it might not be your issue.
How do I know if my PTO clutch is bad?
Activate the PTO engagement lever, then disengage it. Turn it on and off several times. If you do not hear a disengagement noise or see the power takeoff pulley stopping or slowing down at any time, it indicates the clutch and plates have galled together from excessive heat, or the slip ring has jammed.
Should you engage PTO at full throttle?
(1) The blades should always be turned on at full throttle if the mower has a electric P.T.O. (2) The electric clutch has clutch plates that need to be burnished, this is accomplished when the P.T.O. is turned on at Hi rpm’s.
How do you adjust a clutch on a riding lawn mower?
Rotate the adjustable nut clockwise to tighten the clutch rod until the adjustable nut aligns with the hole in the vertical plate. The nut will move down on the clutch rod threads to shorten the length. Press the adjustable nut into the assembly hole in the vertical plate.
What does a PTO overrunning clutch do?
This overrunning clutch allows the PTO shaft to rotate in one direction, but also to spin freely the opposite way. This works to control the speed of the implement that is being hauled behind the tractor. By doing so, the implement does not exceed the tractor’s speed when the tractor is slowing down.
How many amps does a PTO clutch draw?
Engage the PTO switch. The clutch should have an amp draw of approximately 4.0 amps. If the meter reads significantly above or below 4.0 amps, there may be a shorted coil, faulty switch or battery causing the problem. The clutch assembly should be kept free from debris buildup.
Why does my PTO keep turning off?
@mattk ,Matt, Something as simple as a low battery/bad connection or not charging could cause this. Possibly bad seat/reversing safety switch, faulty/loose wire/plug to clutch/PTO/switch, clutch faulty. Trouble shooting/parts/manual links below may help.
Can you repair a PTO clutch?
A failing PTO clutch will result in blades that either don’t engage or will not properly disengage following use. Fortunately, you can fix your clutch irrespective of your experience with PTO clutch installation.
What does a flail mower do?
Flail mowers are ideal for cutting down grass for a finished look. The individual knives within a flail mower attachment are typically Y or T-shaped blades that spin around the shaft, clearing grass as the shaft runs parallel over a surface.
Do garden tractors have PTO?
Bovi-Sapiens. I think pretty much any garden tractor sized unit with a front PTO will be a belt driven PTO shaft. Most have a shaft that goes through the front axle to provide a front and mid PTO. That shaft is driven by a set of belts off the electric clutch on the engine.
What is a PTO clutch?
Power take-off (PTO) clutches provide a mechanical disconnect between the power created by gas and diesel engines or electric motors to another piece of equipment. The PTO clutches enable the transmission of that energy to auxiliary equipment that does not generate its own power.
