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Magneto schematics splitdorf magneto

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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

How to change a magneto on a riding lawn mower


Remove the end cover (where a rope starter is or would be). Remove the magneto attachment nut. Acquire a magneto puller. Attach it to the magneto, crank it until the magneto pops off. Find the little rectangular key (which might have popped off the shaft when the magneto popped off), and make sure it's seated in its little groove in the shaft. Place the new magneto on the shaft, install its attachment nut, crank it down.

Apr 23, 2014 | 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

Set up timeing on a 1951 norton es2


Norton has a heart shaped timing cover. Inside are two camshaft gears, and one crankshaft gear.

The crankshaft gear has two marks on it. The camshaft gears have one mark each. Line the marks of the camshafts, up with the corresponding marks on the crankshaft, to set the camshafts in time with the crankshaft.

Magneto Ignition:
Bring the front cylinder piston up to TDC, (Top Dead Center), after the Intake valve closes.

The magneto is dropped in, (Set in), with the rotor just before the No.1 pin, in the magneto cap. (Front cylinder is No.1)

If memory serves the magneto gear is a Helical gear.

This means when you go to set the magneto in place, you have to be back a few teeth on the gear of the magneto, so that when installed the rotor will turn to a position, just before the No.1 cylinder magneto cap pin.

Also remember to ******, (Turn the magneto back), the ignition BEFORE you kick the bike over.

After the bike starts turn the magneto back to the best idling position.
(Also check on the open road for the best setting, and split the difference.
Good for idling, and open throttle)

If this is Not what you asked for please post in a Comment.

Regards,
joecoolvette

Jan 21, 2012 | Computers & Internet

2 Answers

Id like to know if you can test your magneto without a multi circuit tester ? if i am getting spark, is my magneto still good? how do i read the numbers to know what year i in fact have ?


If you are getting a strong, blue, spark on a known, good spark plug, then the magneto is good. If the spark is weak (barely visible), then it is most likely the clearance or rust build up.

The easiest thing to do is check for rust on the surface of the magneto and the surface of the pick-up coil. Emery cloth is good for removing rust on both. Then check for the clearance between the pick-up coil and the magneto. The closer to the magneto, the more powerful the spark (but rotate the magneto to ensure it never touches). When you loosen the screws on the pickup coil to adjust, make sure you have a business card to place between the surfaces to keep them from touching. The strong magnet in the magneto will pull the pickup coil to itself. Tighten the screws and remove the business card. Check for clearance as you rotate the magneto.

The only thing that can go bad in a magneto situation is the pickup coil. So, if you're getting a spark, it most likely is not the pickup coil because it will either produce a spark or won't.

May 31, 2011 | Suzuki RM 250 Motorcycles

1 Answer

No fire to the plug


that could be from a short in the circutry even as simple as some debri build up around the blade brake magneto ground contact point that is grounding the magneto so spark can not continue to the plug could also be a fouled spark plug or could also be the magneto condenser attached to the magneto has burnt thus looseing capability to disperse the electrical energy to the spark plug, and worse case senario is the magneto is internally damaged from use also possably the magneto's air gap to the magnets on the flywheel is to exssesive for energy production hope this helps Steve

Jul 30, 2010 | Troy Bilt 5.5hp Self Propelled Mower

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

My walk behind mower wont start..has no spark with new plug or old one could it be a rusty magneto


Rust on the magneto has no bearing on the output of a spark. The magneto or the points if it has them could be the problem. If the unit has points they may be under the flywheel. If so equiped, that would be the logical place to start. If no points, I would replace the magneto. When you place the new one on, place a piece of paper between the flywheel and the magneto. When you tighten the magneto, pull out the paper and turn the flywheel by hand. If the magneto turns without touching, put everything together and try it out. Good luck...Lee

Sep 09, 2009 | Garden

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