Does anyone know the resistance values for the coil alone between A and B A and C B and C Thanks. Incidentally, I have a good quality DMM and know how to use it, that’s not the issue). Now no spark with that coil!. No spark, good magnets I believe, coil resistance readings are 2.63 K, brand new spark…ground (stop) is not touching anything, separated the wire, tried 2-3 positions coil from wheel, cleaned the wheel…. Then I’ve checked the bimetal on the exhaust and was working properly. Replacing Ignition Coils or Armatures. Raogoodcx Replaces Briggs & Stratton Electronic Ignition Coil Magneto Armature Fits 495859 491312 490586 492341. BRIGGS AND STRATTON IGNITION COIL REPLACES OEM: 802574 590454. In other words. Is this right? 4.4 out of 5 stars 56. More Buying Choices $20.30 (8 used & new offers) MTD Genuine Part 951-11305A Ignition Coil Assembly OEM Part for Troy-Bilt Cub-Cadet Craftsman Bolens Remington Ryobi Yardman Yard-Machine White Huske. One is the spark plug, the other is the condenser and the third is bare copper wire, I think a ground. . I have two old lawnmowers with this setup. If your plug wire has a boot covering the connector then insert one of you fingers into the boot ant then put another finger of same hand anywhere on the block. The magnet on the flywheel seems strong, but is it possible the magnet has weakened to the point it no longer creates an electrical current? Set the multi-meter to the 20 k ohms setting. Thanks again for your help. 4.5 out of 5 stars 240. Once you connect it to the frame with your multimeter leads it will read 0 resistance. I do not get a spark. When I follow your instructions I’m getting no reading but if I touch the negative (-) to the copper wire or condenser wire I do. One has been run occasionally to keep it ready for power outages. This procedure is assuming you have pulled break release / kill handle back to the run position. Can you please give me some direction from here as I am stumped at the moment. I’m another one with no spark. Trend Briggs And Stratton Ignition Coil Wiring Diagram Vintage – Briggs And Stratton Magneto Wiring Diagram. I have a Briggs & Stratton Wheelhouse 5500 generator. Ignition coil secondary resistance = 5K to 10K Ohms" * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Today, I measured the secondary of one of my coils (did not remove the coil from the engine) and I measured 6.24K Ohms from tower to tower. Just hold the wire “close” to the block and look for a spark jumping from wire to block. Thanks, Clive. I have a Briggs and Stratton 4.5 hp mower. That coil has identical test readings, I sanded all contact and pick-up areas and am testing with the kill wire plug disconnected. I have been servicing mowers for many years, including the old breaker points ignition systems, and the easiest way I have found to test these things is by the idea of “seat of your pants technique.” FREE Shipping. that reading is okay you should get 0 Ohms from the body of the coil to the stop switch connection. It is unlikely that the new coil is also bad it may just be an incorrect reading, Or the coil readings are different for outboard engines. If performing a tune up, the valve adjustment should always be done first, then ignition timing if applicable, followed by carb synching/tuning. If I am getting spark in a spark tester, but getting continuity with the kill switch in both on and off positions, is that still an ignition coil issue, or fuel related? This is usually designated by a R in the part number e.g J19LM OR RJ19LM if so that could explain the weak spark. I have not used the generator in 3 years. Motor is getting fresh fuel, no wires are frayed or grounded\ and changed the spark plug, I ordered a new coil from amazon for my 6 hp Briggs, the ohm reading is 16 k is the new coil bad ? No reading indicates a broken circuit, as reading get higher the spark will weaken until it is no longer present. 6. Do the same ohm meter readings apply? Disconnect the stop switch wire from the flywheel brake and remove the coil. Craftsman 19HP BRIGGS & STRATTON WITH 42" MOWER 107.27768 Operator's Manual (99 pages) . I get no reading after the resistor. -Find and disconnect kill switch wire, to rule that out… no change Typically, the ignition coil can go bad over time due to either long-term wear and tear or due to bad spark plug ignition cables. If you contact us via the contact page we can help you out with a refurbished lawn mower. Joined Sep 4, 2018 Threads 1 Messages 3. I need a coil for an old outboard and it looks to be the same unit where it slides over the stacked plates and one is bent up to hold it. This was my issue; Mower is old; 10 years , but dry-stored, not much use each year, new fuel used every year and old drained at end of season. I have a B&S 10hp on my generator, after reading above , I am confused could the oil level safety switch be bad ? Checked the coil/magneto and have 2.5 ohm between spark plug terminal and housing and 0 to cut-off terminal. -Pulled up and “locked” the safety bar in place with velcro, and tried again, just in case… no improvement I was grinning for a few moments, and stopped to tap on the Police van glass and attract my wife’s attention, and who was sitting handcuffed inside. Something wrong with my reasoning? I recently purchase a new coil and got around the same reading. What else should I check? £14.99 £ 14. Shop with confidence! The 2.5-5 reading is only applicable to the coil in the video which is fitted to the smaller briggs and stratton engines. 6 ohms may not be too high as the coil could be different to the original coil and may use different specs, It seems like the coil may not be the correct fit if the curvature does not line up correctly, It is best for it to be consistent and about the width of a business card for the air gap, You should try the coil anyway it may work if it has been sold to you as a replacement. Get it Thursday, Dec 17. I didn’t bother to try and check the spark and just put the plug in to see what would happen. I assume my 5 HP B &S engine must have a capacitor some where. Hi All Can anyone tell me what resistance I should read between the engine cut out connector (male spade terminal) on the magnetron and the Chassis (laminated stack) - this is on the bench with nothing externally connected to it. If you read open, it will keep running through the brake. Flywheel key checked…..ok…..wheel may be 1/16″ displaced, no more….STILL NO SPARK..magnets seem strong…..Tested with screwdriver tip. What you are saying might sound stupid but the fact is that this is about the best way to find out if anything is happening from the coil or not, especially when the spark is weak, or can’t be seen due to lighting problems, or when the wires can’t be properly secured/grounded to do the test. You say you have the new cool for sale on the website but I’m not finding it when I search for coils have a link? Do you have any refurbished ones for sale?? If the kill tab is hard shorted to the coil body, and the coil body is not isolated from the engine when mounted, then it seems to me the coil cannot possibly work, the coil is grounded to the block at all times, it’s like leaving the kill switch permanently in “kill” position. If I do it the second way,but then double check using. 401577 thru 49M977 series engines (Not used on … Only 1 left in stock - order soon. £22.99. 5. 4. Old coil read approx 4.9 ohms using analog multimeter. If you can stand a little shock, then here it goes. The coil of your 10hp Briggs and stratton likely has a different reading then the smaller coil filmed in the above video. 4.5K before the resistor. It’s an inductance shunt. Is there a way to check its resistance? Thanks, Yes the multi-meter test gives a good indication of whether the coil is working or not but it is not 100% accurate. I get a better spark without using the cap. -tried three different plugs; original, “known working” and brand new; no change, still nothing at all Thanks so much for your fast reply. If the kill wire connector coming off the coil going to the primary coil is suppose to kill the engine – only when the kill wire is grounded to the engine – how can it have continuity at all times?”?? 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