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Briggs and Stratton Parts

Armature-Magneto

Part Number: 398811
Briggs and StrattonToroLawn BoyMurray
Availability: 11 in stock
Price: $66.61
Ships within 1 business day

*This part replaces obsolete part #: 398265, 395492 and 395326.

Product Information
Description:
This replacement armature-magneto also known as an ignition module is specially designed for use with Briggs and Stratton engines commonly used on Toro lawn and garden equipment. It is a genuine OEM sourced item that is sold individually. The purpose of this item is to produce pulses of high voltage for the spark plugs. Please note, the spark plug boot is sold separately.

To complete this repair you will need screwdriver set.
Compatibility

This part is compatible with the following machines:

Briggs and Stratton
Toro
38580 (5900001-5999999)(1995) Snowthrower
38580 (4900001-4999999)(1994) Snowthrower
38580 (3900001-3999999)(1993) Snowthrower
38580 (2000001-2999999)(1992) Snowthrower
38580 (1000001-1999999)(1991) Snowthrower
38580 (0000001-0999999)(1990) Snowthrower
38580 (9000001-9999999)(1989) Snowthrower
38580 (8000001-8999999)(1988) Snowthrower
38160 (7000001-7999999)(1987) Snowthrower
38160 (6000001-6999999)(1986) Snowthrower
38160 (5000001-5999999)(1985) Snowthrower
38160 (4000001-4999999)(1984) Snowthrower
38090 (7000001-7999999)(1987) Snowthrower
38090 (6000001-6999999)(1986) Snowthrower
38090 (5000001-5999999)(1985) Snowthrower
38090 (4000001-4999999)(1984) Snowthrower
38095 (7000001-7999999)(1987) Snowthrower
38095 (6000001-6999999)(1986) Snowthrower
38095 (5000001-5999999)(1985) Snowthrower
38095 (4000001-4999999)(1984) Snowthrower
38150 (7000001-7999999)(1987) Snowthrower
38150 (6000001-6999999)(1986) Snowthrower
38150 (5000001-5999999)(1985) Snowthrower
38150 (4000001-4999999)(1984) Snowthrower
38155 (7000001-7999999)(1987) Snowthrower
38155 (6000001-6999999)(1986) Snowthrower
38155 (5000001-5999999)(1985) Snowthrower
38155 (4000001-4999999)(1984) Snowthrower
38565 (9000001-9999999)(1989) Snowthrower
38565 (8000001-8999999)(1988) Snowthrower
38566 (59000001-59999999)(1995) Snowthrower
38566 (49000001-49999999)(1994) Snowthrower
38566 (3900001-3999999)(1993) Snowthrower
38566 (2000001-2999999)(1992) Snowthrower
38566 (1000001-1999999)(1991) Snowthrower
38566 (0000001-0999999)(1990) Snowthrower
38570 (5900001-5999999)(1995) Snowthrower
38570 (4900001-4999999)(1994) Snowthrower
38570 (3900001-3999999)(1993) Snowthrower
38570 (2000001-2999999)(1992) Snowthrower
38570 (1000001-1999999)(1991) Snowthrower
38570 (0000001-0999999)(1990) Snowthrower
38570 (8000001-8999999)(1988) Snowthrower
58170 (3000001-3999999)(1983) Tiller
30102 (9000001-9999999)(1989) Lawn Mower
30102 (8000001-8999999)(1988) Lawn Mower
30103 (9000001-9999999)(1989) Lawn Mower
30103 (8000001-8999999)(1988) Lawn Mower
30108 (4000001-4999999)(1984) Lawn Mower
30111 (7000001-7999999)(1987) Lawn Mower
30111 (6000001-6999999)(1986) Lawn Mower
30111 (5000001-5999999)(1985) Lawn Mower
30111 (4000001-4999999)(1984) Lawn Mower
R3-10B404 (2000001-2999999)(1992) Lawn Tractor
R3-10B404 (3900001-3999999)(1993) Lawn Tractor
R3-12B602 (2000001-2999999)(1992) Lawn Tractor
32-10B502 (1000001-1999999)(1991) Lawn Tractor
32-10B503 (2000001-2999999)(1992) Lawn Tractor
32-10BE02 (1000001-1999999)(1991) Lawn Tractor
32-10BE03 (2000001-2999999)(1992) Lawn Tractor
32-12O502 (1000001-1999999)(1991) Lawn Tractor
32-12O503 (2000001-2999999)(1992) Lawn Tractor
32-12OE02 (1000001-1999999)(1991) Lawn Tractor
32-12OE03 (2000001-2999999)(1992) Lawn Tractor
55600 (9000001-9999999)(1989) Lawn Tractor
56132 (2000001-2999999)(1992) Lawn Tractor
56132 (1000001-1999999)(1991) Lawn Tractor
56133 (1000001-1999999)(1991) Lawn Tractor
56150 (7000001-7999999)(1987) Lawn Tractor
56150 (6000001-6999999)(1986) Lawn Tractor
56150 (8000001-8999999)(1988) Lawn Tractor
56150 (9000001-9999999)(1989) Lawn Tractor
56155 (3000001-3999999)(1983) Lawn Tractor
56155 (4000001-4999999)(1984) Lawn Tractor
56155 (5000001-5999999)(1985) Lawn Tractor
56155 (6000001-6999999)(1986) Lawn Tractor
56155 (7000001-7999999)(1987) Lawn Tractor
56133 (2000001-2999999)(1992) Lawn Tractor
56138 (3000001-3999999)(1983) Lawn Tractor
56138 (4000001-4999999)(1984) Lawn Tractor
56138 (5000001-5999999)(1985) Lawn Tractor
56138 (6000001-6999999)(1986) Lawn Tractor
56138 (7000001-7999999)(1987) Lawn Tractor
56138 (8000001-8999999)(1988) Lawn Tractor
56145 (3000001-3999999)(1983) Lawn Tractor
56145 (4000001-4999999)(1984) Lawn Tractor
56145 (5000001-5999999)(1985) Lawn Tractor
56145 (6000001-6999999)(1986) Lawn Tractor
56145 (7000001-7999999)(1987) Lawn Tractor
56145 (8000001-8999999)(1988) Lawn Tractor
56145 (9000001-9999999)(1989) Lawn Tractor
56170 (7000001-7999999)(1987) Lawn Tractor
56170 (5000001-5999999)(1985) Lawn Tractor
56170 (6000001-6999999)(1986) Lawn Tractor
56175 (8000001-8999999)(1988) Lawn Tractor
56175 (9000001-9999999)(1989) Lawn Tractor
56185 (1000001-1999999)(1991) Lawn Tractor
56185 (2000001-2999999)(1992) Lawn Tractor
56190 (1000001-1999999)(1991) Lawn Tractor
56190 (2000001-2999999)(1992) Lawn Tractor
56195 (1000001-1999999)(1991) Lawn Tractor
56195 (2000001-2999999)(1992) Lawn Tractor
57300 (3000001-3999999)(1983) Lawn Tractor
57300 (4000001-4999999)(1984) Lawn Tractor
57300 (5000001-5999999)(1985) Lawn Tractor
57354 (6000001-6999999)(1986) Lawn Tractor
57354 (7000001-7999999)(1987) Lawn Tractor
57356 (3000001-3999999)(1983) Lawn Tractor
57356 (4000001-4999999)(1984) Lawn Tractor
57356 (5000001-5999999)(1985) Lawn Tractor
57357 (3000001-3999999)(1983) Lawn Tractor
57357 (4000001-4999999)(1984) Lawn Tractor
57357 (5000001-5999999)(1985) Lawn Tractor
57360 (3000001-3999999)(1983) Lawn Tractor
57360 (4000001-4999999)(1984) Lawn Tractor
57360 (5000001-5999999)(1985) Lawn Tractor
57360 (6000001-6999999)(1986) Lawn Tractor
57360 (7000001-7999999)(1987) Lawn Tractor
57365 (6000001-6999999)(1986) Lawn Tractor
57365 (7000001-7999999)(1987) Lawn Tractor
70040 (39000001-39999999)(1993) Lawn Tractor
70040 (49000001-49999999)(1994) Lawn Tractor
70040 (59000001-59999999)(1995) Lawn Tractor
70040 (7900579-7999999)(1997) Lawn Tractor
70040 (8900001-8999999)(1998) Lawn Tractor
70041 (8900001-8999999)(1998) Lawn Tractor
70042 (3900001-3999999)(1993) Lawn Tractor
70044 (9900001-9999999)(1999) Lawn Tractor
70044 (000000001-000999999)(2000) Lawn Tractor
70044 (200000001-200999999)(2000) Lawn Tractor
70044 (210000001-210999999)(2001) Lawn Tractor
70044 (220000001-220999999)(2002) Lawn Tractor
70060 (39000001-39999999)(1993) Lawn Tractor
70060 (49000001-49999999)(1994) Lawn Tractor
70060 (59000001-59999999)(1995) Lawn Tractor
70060 (6900001-6999999)(1996) Lawn Tractor
70060 (79000001-79999999)(1997) Lawn Tractor
70060 (89000001-89999999)(1998) Lawn Tractor
70080 (3900001-3999999)(1993) Lawn Tractor
70120 (3900001-3999999)(1993) Lawn Tractor
70122 (9900001-9999999)(1999) Lawn Tractor
70122 (200000001-200999999)(2000) Lawn Tractor
70122 (210000001-210999999)(2001) Lawn Tractor
70140 (3900001-3999999)(1993) Lawn Tractor
71140 (3900001-3999999)(1993) Lawn Tractor
71200 (3900001-3999999)(1993) Lawn Tractor
Expand the 150+ compatible machines
Questions & Answers

Will this fit this model
Marty for model number 253707-0158-01 asked on 2023-04-27
Hi Marty, Thank you for your question. Yes, this would be the correct armature magneto for your engine. We hope this helps!
eReplacementParts Team April 27, 2023
will this armature assembly fit the briggs engine I listed?
jon for model number 252707 type 0621-03 asked on 2023-04-26
Hello Jon, Thank you for your inquiry. We confirm that this part will fit your model. We hope this helps.
eReplacementParts Team April 26, 2023
need a coil for this model will this coil fit
Ted for model number 171432-0529-01 asked on 2022-07-24
Hello Ted, Thank you for your inquiry. We have researched the model number you have provided and confirm that this part will fit your model. We hope this helps and if you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you!
eReplacementParts Team July 24, 2022
will this work on this 11hp engine?
David for model number 254422 0558 91120410 asked on 2022-04-18
Hello David, thank you for writing. Yes, the number 398811 you had chosen is compatible with your model. If you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you.
eReplacementParts Team April 18, 2022
Will this fit a 1971 cast iron 10hp Briggs
Russ asked on 2022-03-25
Hello Russ, thank you for contacting us. In order for us to locate the correct parts and repair information we will require the model number of the unit. Once you have located the model number please feel free to resubmit the question and we will be happy to help you. We are looking forward to hearing from you!
eReplacementParts Team March 25, 2022
Does this armature magneto fit my BS 8 hp
Lloyd for model number 195432-0291-01 asked on 2022-02-25
Hello Lloyd, Thank you for contacting us. We have researched the model you have provided and have found the part you are looking for is Part Number:398811. If you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you!
eReplacementParts Team February 25, 2022
Repair Instructions: Submitted by Customers Like You
20 of 24 people found this instruction helpful
Tool Type:
Engine
Parts Used:
Armature-Magneto - 398811
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set
A mouse ate the spark plug wire off the magneto
All I had to do was remove the old Magneto ( which was just two screws) then install the new magneto, it came with easy to understand instructions and a spacer for getting the right gap between the magneto and the flywheel magnets . Very simple . The engine started right up as if it was brand new.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Engine
Parts Used:
Armature-Magneto - 398811
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Socket set, Nutdriver
Part was original and spark plug wire had worn through
Remove carburetor shield and front cover to engine.
Removed old armature, then cleaned that area.
Installed new armature at proper gap measurement.
Also check the machines wiring.
I had a couple wires worn through that were making bad grounds.
I fixed these and then added some wire loom to protect wiring.
Put everything back together and worked great.
While doing this I replaced the spark plug , air filter, fuel filter, cleaned carb.
Did you find this story helpful?
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Tool Type:
Engine
Parts Used:
Armature-Magneto - 398811
Rotary Switch - 692309
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set, Nothing else required
Rotor switch broke. Magneto produced no spark.
1. Diagnosed problem.
2.removed starter rope housing to access magneto
3.removed and replaced magneto and set the air gap with the gauge provided.
4.removed and replaced rotor switch.
5.reassembled the housing and engine now functions .
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Tool Type:
Lawn Mower
Parts Used:
Armature-Magneto - 398811
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Socket set, Nutdriver
lawn more had no spark
replaced the coil had no spark
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Lawn Tractor
Parts Used:
Armature-Magneto - 398811
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Wrench Set, Wire strippers
The armature magneto was out in my old mower. This mower is close to 20 years old and it has an 11 1/2 horse B&S motor. The engine would run until it got hot, initially, and then it would shut down un
Disconnect the battery
Remove the engine cover
Remove two screws that hold the armature magneto in place.
Remove the stop switch wire

Spin the flywheel so that the magnets are 180 degrees from the armature magneto.
Screw the new armature magneto on, making sure that the side that says "cylinder" is facing down. Loosely tighten the screws enough so that they stay in, but don't hold the armature magneto down. It should move in the groves.
Use the included feeler gauge to correctly gap the spacing between the armature magneto and the flywheel magnets.
Spin the flywheel back so that the magnets pull the armature magneto into position. The card feeler gauge will create the right gap. Tighten the screws.
Turn the flywheel some more and the card will come out.
Measure the sparkplug wire and cut it to the right length. Strip the wire and use the included tip to make your plug wire the right length. Crimp the tip brackets down with plyers.
Pull the boot off your old sparkplugs wire or install a new boot.
Put the boot back over the spark plug
Install the new stop switch wire, or just use the old one, if its in good condition.
Put the engine cover back on.
Reconnect the battery.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Engine
Parts Used:
Armature-Magneto - 398811
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set
Would start but die after warmed up
Removed all parts in the way.
Installed part
Put all parts back on
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Lawn Mower
Parts Used:
Armature-Magneto - 398811
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set
Replacement of 30- year old magneto
I followed your instructions that came with the Magneto
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Tool Type:
Generator
Parts Used:
Armature-Magneto - 398811
Valve-Fuel Shut Off - 592840
Filter - 298090S
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Socket set, Wrench Set
Engine would not start
Replaced the coil, and replaced the fuel shutoff, works great
Did you find this story helpful?
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Reviews
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Average Rating (out of 5):
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  • Engine coil
    I was trying to replace the coil on an obsolete engine and ordered what appeared to be the right coil but it wasn’t so I had to return it. It was a quick and easy experience.
    Guest - February 14, 2023 Verified Purchase
    Easy
    Was really easy to order part arrived on time and was exactly right
    Guest - July 19, 2022 Verified Purchase
    works great
    fast service
    Bart - August 24, 2021 Verified Purchase
    EASY INSTALL FAST SHIPPING
    PART WAS CORRECT EASY INSTALL MOTOR UP & RUNNING
    Guest - July 15, 2020 Verified Purchase
    Part in great condition delevered
    Originel part, installed and working great!
    iGlobal - June 5, 2020 Verified Purchase
    easy to work with
    ill have to let you know
    Guest - September 9, 2019 Verified Purchase
    Verified Purchase
    eReplacementParts Team
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