For magnets that's held in place with glue, use a propane torch or an oxy-acetylene torch with a small flame to heat the cast iron part of the flywheel on the outer (glued) part of each magnet to soften the glue, and then CAREFULLY and GENTLY remove the magnets with a thin, sharpened steel putty knife or scraper and small hammer.
Full Answer
How do you test the magneto on the flywheel?
It is located to one side of the flywheel so that when it spins and the magnets pass it, a charge is generated, then passed to the spark plug. Be sure the magnet you are testing is rotated away from the magneto when testing takes place. Hold the screwdriver against the magnet, if the magnet pulls the screwdriver in, the magnet is fine.
What happens when you replace the magnet on a flywheel?
Replacing flywheel magnets may correct a problem with your small engine not starting. The flywheel magnet provides an electric charge to the ignition coil, in turn sparking the plug in a small engine. If the magnet has lost it's magnetic properties or comes loose, the small engine may not start or run properly.
How do you remove a flywheel from a small engine?
Remove the flywheel magnets by prying them off the flywheel or unscrewing the mounts, there are different configurations on different small engine flywheels. Clean the flywheel carefully to remove any residual adhesive or debris.
How do you fix a broken flywheel on a lawn mower?
Apply a two part epoxy or a heavy duty adhesive such as Gorilla Glue, according to the manufacturer's instructions, to the flywheel and/or the magnet surface. Install the replacement magnets. Let the adhesive cure. Replace the housing for the mower pull start assembly over the flywheel with the original bolts.
Can you replace the magnets on a flywheel?
Things You'll Need Removing and replacing the flywheel magnets takes a specific process to be sure they are replaced in the right configuration. If labeled carefully and close attention is paid to placing the magnets properly, they can be replaced without taking the engine to a mechanic.
What is the purpose of the magnet located on the flywheel?
The flywheel starts to rotate when the gear motor rotates as they are magnetically coupled to each other and also with the help of magnetic locking, during this time the flywheel rotates to a specific rpm.
Can a flywheel lose its magnetism?
Re: Re magnetizing flywheel? Due to the extreme heat that the flywheel magnets are exposed to, and possibly being dropped onto the floor, the old magnets lose strength. It is a common problem with old Honda CRs.
Will rust on flywheel magnets will cause an ignition system to fail?
Conventional thinking is that when there's rust on the flywheel, it gets in the way of the spark. All you have to do is clean the flywheel, and you'll be up and running. Experts have debunked that theory, though, saying that rust has no impact whatsoever on a magnetic field.
Can you recharge flywheel magnets?
Fortunately, recharging the magnets is a very simple thing to do. And, (at least at the AOMCI Western Reserve Chapter), it won't cost you anything. So, our recommendation is, if you already have your motor disassembled for repairs, you might as well recharge the flywheel magnets while you are there.
How do you attach a magnet to a flywheel?
0:511:35Quick Tip #12 - Flywheel Magnets - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow what I'm going to do is grab my epoxy glue and put it on beside the magnets. I'm just going toMoreNow what I'm going to do is grab my epoxy glue and put it on beside the magnets. I'm just going to apply a thin layer. Now even though the magnets have not come off on this flywheel. I'm still doing.
How do you charge a magnet?
How do you remagnetize a magnet? You remagnetize a magnet by bringing it into contact with a strong magnet. So, if you have a weakened magnet, you must carefully bring it to contact with a strong neodymium magnet. This will make your weakened magnet regain its magnetic force.
How does a magneto ignition coil work?
The magneto is a self-contained generator of high voltage that provides ignition to an engine through spark plugs. A magnet—hence magneto—spins in close proximity to a coil of wire. As the magnet spins (or the magnet rotor is turned), it generates a strong magnetic force that is “held back” by a primary coil.
How do I keep my flywheel from rusting?
The only way we have found of stopping rust on flywheels and shiny metal parts long term is the use of an agricultural rust inhibitor made by castrol but there are many simular products from different brands, you simply paint it on and when it drys it leaves a wax layer which stops the rust pretty much dead for a year ...
How do you get surface rust off a flywheel?
You can sand it with 220 sand paper. It does not look like it will clean up enough to be usable without being resurfaced. If you have a 4" or 4-1/2" angle grinder, use a 120 grit Flap disc and see if that will clean it up. Just don't get supper aggressive with it.
What should the gap be between ignition coil and flywheel?
Homelite advises that the gap between the ignition coil and the flywheel must be set anywhere from . 0012 to . 0013 inch for successful engine startup. If you've not replaced the ignition coil recently and your machine won't fire up, it may be possible that you simply need to check the gap and reset it if necessary.
What is connected to the flywheel?
Most importantly for drivers, the flywheel connects the engine with the transmission via a clutch to transfer power to the wheels.
How does the flywheel Work?
A flywheel is essentially a mechanical battery consisting of a mass rotating around an axis. It stores energy in the form of kinetic energy and works by accelerating a rotor to very high speeds and maintaining the energy in the system as rotational energy.
What is the application of flywheel?
The main stationary applications of flywheels are in uninterruptible power supplies (UPS), and trackside support in traction (rail) and mining systems. Emerging applications are power quality (PQ) systems, peak shaving in electrical power systems, and power smoothing in renewable energy systems.
What is flywheel effect in generator?
This flywheel effect is produced by a wound rotor induction machine which is controlled in a way such that a quick phase-shifting operation extends the generator capability to compensate the energy unbalance during faults. Experiments and simulations verify the validity of the proposed approach.
How to remove flywheel magnets?
Remove the flywheel magnets by prying them off the flywheel or unscrewing the mounts, there are different configurations on different small engine flywheels. Clean the flywheel carefully to remove any residual adhesive or debris.
Where is the magneto located on a flywheel?
The magnet must be on the opposite side from where the magneto is located when tested. The magneto is also called a coil, because it is wrapped in wire. It is located to one side of the flywheel so that when it spins and the magnets pass it, a charge is generated, then passed to the spark plug. Be sure the magnet you are testing is rotated away ...
What to do if a magnet is repelled?
If the magnet is repelled, label the flywheel magnet R, and if it is attracted, label the flywheel magnet A. This will differentiate for you which position the magnet should be replaced in. Just be sure to remember which designation is attract, which is repel.
How to remove pull start mechanism?
Remove the bolts on the top of the small engine that houses the pull start mechanism with the proper sized wrench. Set the bolts and housing aside so the parts do not get lost.
What to do if your small engine is not starting?
Masking tape. Flywheel magnets. Replacing flywheel magnets may correct a problem with your small engine not starting. The flywheel magnet provides an electric charge to the ignition coil, in turn sparking the plug in a small engine. If the magnet has lost it's magnetic properties or comes loose, the small engine may not start or run properly.
How to remove magnets from Kohler flywheel?
Ok the easiest way to remove the magnets on a Kohler Engines Flywheel is to put it in the oven while the oven is still cold turn it on to 300 degrees and wait till the flywheel comes up to temperature slowly so you don't fracture the magnets , after an hour take it to 350 degrees and wait a half hour then up to 400.
Does glue show on magnets?
Some sort of glue for sure, not much glue/epoxy shows on the edges of the magnets. John U
How to remove magnets from flywheel?
To remove good, reusable ceramic magnets from a flywheel (for whatever reason), first of all, place a number on each magnet in their position in the flywheel (1-2-3-4-5-6) with a Sharpie metallic silver permanent marker or paint marker so they can be reinstalled in the correct order. For magnets that's held in place with aluminum compression pins, simply use an 1/8" roll pin punch and a medium size hammer to drive out one pin toward the center of the flywheel, then all the magnets will be loose and can be removed from the flywheel by hand. For magnets that's held in place with glue, use a propane torch or an oxy-acetylene torch with a small flame to heat the cast iron part of the flywheel on the outer (glued) part of each magnet to soften the glue, and then CAREFULLY and GENTLY remove the magnets with a thin, sharpened steel putty knife or scraper and small hammer. Do not apply heat directly to the magnet itself, it could break! Due to the heating process, and to prevent from being burned, use a shop towel to handle each hot magnet. TO AVOID BREAKAGE, DO NOT COOL CERAMIC MAGNETS WITH WATER! Allow them to air-cool.
What are the magnets on a Kohler flywheel?
Internal flywheel charging magnets are of a very odd type. Charging magnets in the Kohler and Tecumseh flywheels do not have just North and South magnetic pole ends, such as the typical U-shaped or horseshoe magnets. There are a total of six magnets in most Kohler flywheels. Three are South-North-South on the inside curve and North-South-North on the outside curve, and the other three magnets are North-South-North on the inside curve and South-North-South on the outside curve. They are NOT North-South and vice-versa on the ends, no exceptions. Each magnet is like three magnets integrated in one. This is how the charging system generate so much voltage and amperage. Referring to the picture of the two magnets to the right, the magnet to the left side, South-North-South is on inside curve, and North-South-North is on the inside curve. And the magnet to the right side, North-South-North is on inside curve, and South-North-South is on the outside curve. If anyone tells you that there is no certain order the charging magnets are reinstalled or replaced in a flywheel, then they are wrong! If they are installed in the flywheel misaligned or not in the correct order, the charging system will NOT work. They MUST be reinstalled in the correct order with the poles (end of each magnet) opposite of each other for the charging system to work correctly. To identify which pole is which, from inside the curve of each magnet (not the outside curve), use another [strong] magnet with the magnetic poles identified and marked, or use a high quality portable handheld magnetic compass to identify the magnetic poles of each flywheel magnet. Always identify the magnetic poles from the inside curve of each magnet, and not the outside curve. By the way - When the magnetic North and South poles on a U-shaped or horseshoe magnet isn't marked or identified, to correctly find which pole is which, fasten a thin string or sewing thread to the middle of the magnet, and allow it to dangle in midair. It may take a few minutes for the string or thread to unwind so the magnet will stop spinning and come to a full rest. Make sure no other magnets are nearby. The ends of the magnet to be tested will attract to the Earth's natural North and South magnetic poles. When the poles have been identified, mark which pole is which with a Sharpie metallic silver permanent marker or paint marker for future reference. Dangling Kohler flywheel magnets by a string to identify the poles will not work. And use caution when handling ceramic (flywheel) magnets! They are very brittle and can break easily if mishandled. Do not allow them to quickly snap together or quickly attract to a large steel or cast iron object. Return to previous paragraph or website.
What to do if a magnet is broken?
When a ceramic magnet becomes loose inside the flywheel, if it is not broken, it can be reinstalled with Krazy Glue, Super Glue, Gorilla Glue, or any industrial strength adhesive. Broken magnets cannot be reused. A broken magnet must be replaced with an identical magnet in good condition. A broken magnet actually becomes two magnets with a north and south pole on each broken piece, and will not work at all in a small engine alternator charging system. Even if the two pieces are glued together, the magnetic poles may or may not attract, and the molecules cannot bond together to form one single magnet.
