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Briggs and Stratton Parts

Armature-Magneto

Part Number: 591420
Briggs and StrattonToro
Availability: 25+ in stock
Price: $49.53
Quantity:
Order within the next 11 hours
and your part ships today!

*This part replaces obsolete part #: 793281, 793352, 792594, 395489, 398593 and 496914.

Product Information
Manufacturer: Briggs and Stratton, Toro
Product Number: 591420
Classification: Part
Weight: 0.77 lbs.
Shipping: Ships Worldwide
Description:
This replacement armature-magneto is specially designed for use with Briggs and Stratton engines commonly installed on Toro lawn and garden equipment. It is an authentic part sourced directly from original equipment manufacturer. The armature-magneto also known as an ignition module produces pulses of high voltage for the spark plugs. This item includes (1) armature-magneto and (1) lead wire per order.

To complete this repair you will need screwdriver set.
Compatibility

This part is compatible with the following machines:

Briggs and Stratton
Toro

Products Compatibility

This item works with the following types of products:

  • • Engine
  • • Generator
  • • Lawn Mower
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
13 of 17 people found this instruction helpful
Tool Type:
Engine
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Socket set, Wrench Set
Roto tiller did not start
Tested if there was a spark , there was no spark. Replaced spark plug, still no spark. Replaced the Magneto, the engine worked normal.
I learned how to replace the Magneto by looking at the assembly drawing of the engine, available on ereplacementparts web site.
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9 of 10 people found this instruction helpful
Tool Type:
Lawn Mower
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set
My lawn mower would run for about 20 minutes under load and then quit.
It was a very easy repair. I removed the cover from the top of the engine, then I removed the small bolt holding the engine governor air flow sensor, then I removed the last bolt remaining in the magneto. I unplugged the spark plug wire, lifted the magneto and unplugged the low tension wire from underneath. I reversed the procedure to install the new magneto with one exception, I tore two small pieces of cardboard from the lid of the box that the part came in to use as spacers between the magneto and the flywheel of the mower. After I had the bolts for the magneto snugged down I removed the cardboard spacers and finished assembly.
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4 of 4 people found this instruction helpful
Tool Type:
Engine
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Socket set
My Mclane edger had no spark to plug.
My edger is 27 years old, so the difficult part was finding the correct magneto. It comes out with two small bolts. I re-terminated the spark plug terminal to shorten the plug wire. The magneto comes with a few spare parts. Starts on first or second pull. Three bolts on the pull start assembly had to come out and the pull cord assembly and shroud had to be pulled. Very easy to do. I saved $240.00 on a new edger.
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3 of 5 people found this instruction helpful
Tool Type:
Lawn Mower
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Wrench Set
Would not start
Remove the cover. Install and adjust the new magneto. Replace cover.
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2 of 4 people found this instruction helpful
Tool Type:
Engine
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver, Pliers, Wrench Set
Coil not generating spark.
Replaced the old part with the new one.
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Tool Type:
Engine
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set
Engine had no spark
I was glad to see installation instruction included with the part.
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0 of 1 people found this instruction helpful
Tool Type:
Lawn Mower
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Socket set
Armature-magneto coil was bad
Removed shroud and replaced armature-magneto coil. I used a business card to set the gap between the coil and the flywheel, rotate the flywheel (with card in place) until magnets on flywheel are aligned with the coil, this will pull the coil towards the flywheel with the proper spacing, tighten mounting bolts on the coil, rotate flywheel and remove card, reassemble shroud and you are done.
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0 of 1 people found this instruction helpful
Tool Type:
Engine
Parts Used:
Armature-Magneto - 591420
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Wrench Set, Nutdriver, Adjustable Wrench
Engine did not start
1. Checked for spark and none
2. Installed AM with instructions, gap and cleaned flywheel.
3. Started engine and ran great lots of spark and HP now.
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Discussion
Discussion for Armature-Magneto - ( 591420 )
Discussion is closed. To ask our experts a question about a part, use the Q&A feature.
Question: Magneto

Highpockets

Will 591420 replace the magneto on a briggs 2.25 HP engine. Can't find original part no. This motor is app. 50 years old. Model No. 60231-0139-03. Thanks
Hello Highpockets I do not expect to easily find any parts diagrams on a vintage engine that old. That is amazing. I presume the engine used breaker points and condensor though? A diffferent type of magneto is used on engines with points system. The newer magnetos have no connection points or trigger wire connectors on them or trigger mechanism inside of them like the old magnetos for points/condensor units do. In other words, a MORE MODERN magneto will not work on a 50 year old unit. Trying to help.

link removed: Find Briggs & Stratton Antique Engine Manual & Specs
Question: Rev Limited

kgyrobotron

Is the magneto a rev limited type?
Question: Magneto Airgap

mmaj

B&S 10T802 0778 B1 engine Need air gap for magneto Thanks
Question: Armature-magneto For Engine 10A9...

jeffriesf7

will this work for any engine B&S 10A902 ?
I ask -There are 2 model nos says for Toro
My engine is in a CRAFTSMAN mower.
Does that make any difference & if so which armature model no. do I need for my mower?
Also no on my magneto is 5194 not 591420 does this make any difference ?
Will this fit my engine 10A902 ?
Engine is definitely 10A902-0181-03..
Hi jeffriesf7 The fact that the mower is a Craftsman makes no difference. Craftsman does NOT make parts, it is only a brand name. Ignition coil module part number 591420 is a fit for your Briggs and Stratton 10A902-0181-03 model engine. You can see it here:

http://www.ereplacementparts.com/briggs-and-stratton-10a902018103-engine-parts-c-16758_17347_22166_213477.html

It is part A-333. I realize there is a part A-333B also
Reviews
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  • Part did not fit.
    This Briggs and Stratton part did not fit. It was the correct replacement part number according to Briggs and Stratton webpage but did not fit. This motor was an old flathead design and has been unavailable for years. Ereplaceparts handled the return in a most professional manner. 👍👍👍👍
    Guest - 9 days ago Verified Purchase
    waited three months for a part for a 30 year old motor
    After a 3 month wait for the mag assembly for my edger, I now have a motor that runs better than new. I had no doubt that as soon as the part was available I would get it. It was worth with the wait. I received a monthly update on the status of my order, I liked that.
    Jay - 22 days ago Verified Purchase
    Verified Purchase
    eReplacementParts Team
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    Product Information
    Manufacturer: Briggs and Stratton, Toro
    Product Number: 591420
    Classification: Part
    Weight: 0.77 lbs.
    Shipping: Ships Worldwide
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