Genuine Briggs & Stratton 590454 Magneto Armature Coil Replaces 591932 799381 790817

Worked just fine. Mower started on first pull.

I've owned my Briggs and Stratton Craftsman lawn mower since 2013 and towards the end of last summer, I started having issues starting the mower after the engine had warmed up.I would cut my backyard and then cut off the mower to roll it to the front yard to cut it. As soon as I go to try and start it again, the mower would fail to start. I'd have to wait a couple hours before it would start again.I tried a tune-up which didnt fix the problem. So I began searching the internet for the cause of the problem and I found out Briggs and Stratton small engines have a magneto armature that can start to fail around the 6-10 year mark. When they start to fail, they exhibit symptoms common to what I was seeing.I called around to see how much my local lawnmower repair shop would charge to replace the coil and they told me $125 parts and labor. I started researching the difficulty in replacing this component and decided I was comfortable in doing the work myself.After shopping around, I found there are many sellers that carry cheap generic replacements for $15 on Ebay. I decided on buying the offical Briggs and Stratton branded part here on Amazon for $38 (my local lawn mower repair shop said the part would cost them $54.99). Amazon had it cheaper and they offered free shipping on it. I received the part the next day.It took me about 45mins to perform the replacement of the magneto armature coil. There were a total of about 9 screws that had to be unscrewed. I also used this as an opportunity to clean around the components underneath the casing.There's a part where you have to create a very small gap between the replacement coil and the magnets inside the mower. Most people recommend using a business card as it has the necessary thickness needed to create the gap. So I did this and it worked perfectly!After I put everything back together, I tried to start the lawn mower and it started in literally a half pull of the rope. I begin cutting the backyard grass to give the engine enough time to warm up so I could test whether or not my efforts fixed the problem. Sure enough, the mower started right up again after I had cut it off.This was indeed the solution to my problem and it was not all that hard to fix. If you have a screwdriver, ratchet with sockets, and about 45mins to spare, you can save yourself a ton of money doing this repair yourself.Amazon doesnt dissappoint when it comes to finding products at a reasonable cost.

Replacement for a rotted out coil on a Briggs engine mounted to a Craftsman pressure washer. Direct fit, easily gapped and the washer runs like it is new

Exact replacement for my Troy-Bilt 2012 TB230 (12AVB25U711), started the mower on the first pull. I was mowing the lawn and stopped to empty the bag and couldn't get it to restart. Here's what I tried in order:1. Check the gas. It was fine but I emptied and refilled with fresh.2. Check the sparkplug. It was a bit dirty so I replaced it.3. Check the air filter. A little dirty so I just tapped it out and reinstalled.4. Check the spark plug wire. It was rusty so I sanded the interior to get to bare metal.5. Check the oil. It was fine so I didn't do anything.6. Took the carb off and used the Briggs & Stratton Carb Overhaul Kit (part no. 498260) to replace the gaskets and float needle. Search online for an instructional video.7. At this point I had narrowed the issue to a lack of spark. Replacing the ignition coil is easy but requires a bit more of a teardown of the mower than the above. Lots of videos online for how to do it and its less time consuming and less difficult than the carb. I didn't fully remove the gas tank or oil nozzle - just unscrewed it and pushed it back out of the way.Started up first pull and I should be good for another 8-10 years.

the picture shows no spark plug boot on the end of the wire. Down where it says also bought together is the spark plug boot. I also ordered the boot. It is not needed, there was already one attached to the coil.

Clearly an OEM part. Fit my 6.5hp 15 yr old Briggs lawnmower engine perfectly. Impedance measures just over 6k ohms. Comes with small and large spark plug clips. Note inside the box indicating need for modified governor vane on older engines such as mine but there was no need on mine. Briggs manual says set air gap at .006-.010 inches by the way. Design is changed from original but this is a quality part. Is it worth $40 when there are aftermarket parts at $15?? No clue but this is a trivial part to diagnose and replace and unlike the crummy knockoff carburetors (for example) is a very simple part so given the pretty high price delta for this particular item might be worth taking a risk on non-OEM version.

I am electrically trained/skilled individual. There should be continuity between both sides of the magneto (the large metal parts that are against the flywheel). I did not have continuity between the spark plug boot and the magneto like many troubleshooting videos on YouTube suggest. I’m not sure why this is the case but it seems that this coil is different than most. It may have to do with the plug-in kill switch on the coil.This was a genuine OEM Briggs & Stratton part. After installing this on my Husqvarna HU 725AWD mower it started right up.My original part had the numbers 799310 & 140505 printed on the back side. These were no help in finding a replacement but I found it worth mentioning.

Puts the spark in the spark plug.

It was the exact replacement for the original that was 34 years old. If your able to figure out this was the problem, its straight forward replacement. Started first pull

I have got a Briggs & Stratton Intek Edge engine on my Hayter 56 mower. The mower is 16 years old and over the last two years the mower had become very difficult to start when hot, sometimes it would and sometimes you could pull the cord a dozen times before it would start. Last winter I completely rebuilt the carburettor as I though that was the issue as it was flooding when stopped as the needle valve did not seem to close. That resolved, come springtime and grass cutting season again the same starting issues persisted and gradually got worse. I thought at that point of selling the mower on as it had become a liability, but decided that after watching a couple of You tube vids and speaking to a couple of small engine mechanice that it may be the coil. For just over £42 I thought I would give it a go as this option was much cheaper than a new mower! There are plenty of videos on line to show you how to change the coil and also how to check if you need one using a multimeter. For this model of engine the resistance in ohms should be between 2500 and 5000 ohms. The higher the resistance the weaker the spark and hence difficulty starting. Mine measured 4600 ohms so I thought changing the coil would be worthwile. It takes about an hour to take off the guards fit the new coild and put it back together again. Setting the correct air gap is also important the working range on this engine is 0.160-0.360mm. I set the gap to 0.250 using a feeler guage as that seemed to be the gap set by the manufacturer on the old coil. As oon as it was all put back together it started on the second pull, and has subsequently started on the first pull when hot, during mowing,about 800M2 , there also seems to now be much more power in the engine as the fuel is burnt more efficiently. So in a nutshell if you are having problems starting the engine when hot this may be your answer, my mower now performs like a new one.

My 1990 model Briggs & Stratton powered Rover Regal lawn mowers magneto final gave up, so replaced it with this unit that superceeds the original. Tested the spark before attempting to start it, gave a really good spark, fitted the spark plug then it started first pull. It even starts easier now than it ever has since I bought the mower brand new, as previously it would always start on the 3rd or 4th pull. Its obvious that Genuine Briggs & Stratton magnetos have improved since 1990. Mind you, nothing else was touched, only the magneto changed.

My mower suffered from weak / no spark, so I purchased this replacement.I used this part in my Sears-Craftsman 6.5 HP / 21" mower, model #944.362400. I think that this mower has the Briggs and Stratton "Quantum" engine. The "590454 Magneto Armature Coil" replaces original part# 802574 on this mower. Note that it looks different from the original part on the mower. A youtube video recommended setting the gap between this part and the flywheel to .012 inches. Others stated that the Briggs and Stratton manual calls for a .010 inch gap. I gapped it to .012 inches and it worked immediately.The part came with a note stating, "Air Vane Replacement. If replacing the armature on an engine built before date code 101230xx, the original air vane must also be replaced. Order and install 790848 Air Vane (sold separately)." I believe that my engine was built before that date, but it has no air vane at all. So, check before you purchase an air vane. You can find out about how to read date codes on the Briggs and Stratton web site.

Great as described prompt delivery