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Magnetizing a mcculloch slick magneto

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As fascinating as that sounds, I really have no Earthly idea.

I recommend contacting your local authorized service center for assistance.

You may contact the manufacturer, download manuals, check fuel/oil ratios, order parts, find your local service center, and view other resources using these links:

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What is the correct fuel mixture for McCulloch products Chainsaw Trimmer...
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I trust this information proves beneficial.


magnetizing a mcculloch slick magneto - helpful-rwwceix4simen0bu2pand4lt-4-0.png

Posted on Feb 19, 2018

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Posted on Jan 02, 2017

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1 Answer

What is the correct gap between the magneto core and magnet?


The gap is .010. You can also use a card to gap the coil and after you tighten the coil and remove the card turn the flywheel by hand one revolution to make sure the magnet does not rub on the flywheel.

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Hi i would like to know why do i only have fire on one side of my 23 hp kawasaki motor?


Assuming that you have checked the spark plug and confirmed that it has not completely failed, the most common reason is the magneto on that side has failed. (There is a separate magneto for each cylinder).

To replace a magneto, you'll need to look up which part is used on your particular engine. (You will need the brand (Briggs, etc.) and the complete engine model and type numbers from the id tag on the engine).

Then go to an intrernet parts seller and look up your part number. One place you can start at is at PartsTree
http://www.partstree.com/parts/
Once there, click on the engine icon for your engine and drill down until you find the correct magneto part number.

Replacing the magneto is simple, removing the top engine sheet metal cover involves removing a few bolts, and both magnetos are then readily available.

When installing the new magneto, you first screw it down at the furthest point away from the flywheel. Then rotate the flywheel so that the magnet is aligned with the new magneto.

As part of the new magneto, you will get a thin sheet of cardboard that you hold against the flywheel magnet and loosen the new magneto, allowing it to be pulled again the magnet (with the special cardboard spacer in between).

Use care as the magnet is quite strong and the magneto will be pulled to it with a strong force.

Now firmly tighten the two screws that mount the new magneto and slowly rotate the flywheel to remove the cardboard. Replace the engine top cover and your done.

May 24, 2014 | Scag SFZ52-26BS Freedom Z Zero Turn Rider

1 Answer

Mcculloch parts manual


you can purchase the magneto at most any parts shop unless its an obsolete saw. the magneto is located on crank cooling fins under the pull start

Jan 07, 2014 | Garden

1 Answer

I have a lt1000 with a 17.5 horse briggs was running great died one afternoon and has no fire to the plug. keeps fouling the plug. what could be the problem.. How do u test the magnito and where does it...


you can use a neon bulb voltage tester to check for spark
a magneto gets its spark from the collapse of the magnetic field that occurs when the points close
the magneto is comprised of two coils.
a primary and a secondary.
when the points are open the primary and secondary are one continuous circuit and generates a considerable magnetic field when the magnet passes the magneto.
when the points close the primary coil is shorted to ground.
this causes a very rapid collapse of the magnetic field in the magneto.
this field collapse can generate a very high voltage surge (the power for the spark)
this surge can exceed 12,000 volts or more and yes it is a bit painful

Sep 08, 2013 | Garden

1 Answer

Not getting spark to plug on eagerbeaver 2014


Jeffuxum:

The magneto is probably where the problem is. You'll need to pull the cover off of the motor and check the gap between the magneto and the flywheel. If the bolts holding the magneto have vibrated loose, the gap between the magneto and the flywheel will be incorrect. While you have the motor cover off, check the wiring to make sure you don't have a short in your ignition wiring and clean the air filter. I don't remember what the gap is between the flywheel and magneto, but .010 In. sounds familiar. Both legs of the magneto should be the same distance from the flywheel and they must not touch the flywheel at any point. I have used a matchbook cover between the flywheel and magneto while I tightened the magneto retention screws and it worked.

Jan 18, 2013 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

What is the air gap for my magneto on my 25cc homelite weeater?


Should be around .013 to .014. turn flywheel until magnets face magneto insert your feeler gauge and loosen magneto screws...let the magneto stick to the feeler gauge and the magnets... re-tighten the screws, remove feeler gauge, and you should be set...hope this helps. ;-D

Jul 06, 2010 | Homelite Mighty Lite Lawn Trimmer

1 Answer

Ryobi chainsaw magneto gap


The gap needs to be as narrow as possible without any actual rubbing of the rotor against the magneto. The spacing is not as critical as with spark plugs or points (remember them?) since unlike those gaps there is no spark jumping across this gap.

Generally, as long as the magnetic field is strong enough, the magneto will produce the necessary spark at the spark plug. The closer the magnets are to the coil, the stronger the magnetic field will be across the coil, and therefore the stronger and hotter the spark.

I have replaced magnetos and they are simple to install, and almost impossible to mess up if you do it this way. All you need is a piece of thin cardboard (not corrugated). I use a glossy business card without raised lettering (so it slides easily), or the like.

1) Rotate the flywheel so that the magnets are NOT positioned in front of the magneto, then loosen both screws of the magneto so it can move freely.

2) Insert the business card between the magneto and the flywheel such that the glossy side of the business card faces the rotor.

3) Then BEND the business card back over each side of the magneto (in other words away from the flywheel) so it stays fixed and can not move from side to side when you rotate the rotor.

4) Then while pinching the magneto and ends of the business card tight between your fingers, rotate the flywheel to position the magnets directly in line with the two sides of the magneto.

Note: The magnets will grab the magneto and try to move it. As long as the slippery side of the business card is facing the rotor and you haven't removed the screws, it should move fairly easily.

Since the magnets want to pull tight to the magneto, but the business card thickness is the same across the entire surface, this gives you an even spacing between both sides of the magneto and the rotor. Essentially, the magnets on the rotor do all the work for you. with regard to alignment. As long as the magnets (flat shiny polished square surfaces on the outer rim of the rotor) align directly with the two faces of the magneto, the alignment is automatic.

5) Once you have the magneto and rotor in perfect alignment, cinch down both screws in an alternating method, first just to where they start to grab, and then back and forth a few times until they are firmly tightened.

6) Now, unfold the flaps of the business card and let it move with the rotor instead. You should be able to rotate the rotor away from the magneto and the business card should slip out easily. It may stay where it was or it may slide out from the magneto - either way will work.

7) Once past the magnets, the business card should come out. You may have to move the rotor back and forth gently a few times to get it to come free. When you are done, the magneto should be in perfect alignment with the face of the rotor and the rotor should spin freely without any rubbing.

8) Confirm the above and then reassemble and go cut some trees.

Phil



May 12, 2010 | Ryobi Factory Reconditioned 18" 40cc...

1 Answer

Lawnboy gold series 10400, sn 4906038, failure to fire. Possible bad magneto. Looking for replacement part and magneto settings; i.e., gap between flywheel and the magneto. Any other tips appreciated.


You should be able to get a new magneto at any local lawnmower repair shop. The proper gap can be achieved using a standard business card. When you get the new mqagneto, turn the magnets on the flywheel to the opposite side away from the magneto, replace the magneto pulling it all the way back away from the flywheel and "snug" 1 or both of the mounting screws.
Now, turn the flywheel magnet to where it is centered under the magneto, insert the business card between the flywheel and magneto and loosen the screw you tightened earlier. Magneto will pull down tight to the magnet. Tighten both screws then rotate the flywheel to remove the business card

Sep 22, 2009 | Garden

1 Answer

No spark on Mc Culloch 110 saw


Remove the stop switch wire from the switch and check for spark (use a clean spare plug and the plug base touching engine metal), If nothing, trace the wire back to the ignition coil looking for worn insulation. Is this a magneto model or an all-in-one module? If a magneto, there should be points and condenser--check points gap (about 0.015") and condition. Check the core gap to flywheel magnets (I use card stock to set the gap). Try to wiggle the flywheel to check for crankshaft bearing looseness. If the ignition is an all-in-one module, check the core gap to the flywheel magnets. Otherwise replace the module. Hope this gets you running.

Aug 26, 2009 | McCulloch Garden

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