Briggs ignition retrofit a good idea? - Snowblower Forum : Snow Blower Forums
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post #1 of 12 Old 01-25-2017, 11:12 PM Thread Starter
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Briggs ignition retrofit a good idea?

I have two 7 hp Briggs engines on Toro 726 blowers.

Neither engine has much if any spark. I expect these have points and condenser under the flywheel.

Wondering if people here would advise servicing the existing setup or installing an electronic module and, if so which of various alternatives you might suggest.

For me pulling a flywheel is something I've done many times before, so it's a bit of a pain but not a big deal. Still, more work than just installing a module or the Briggs trigger coil setup.

Some have reported that the retrofit modules require a higher cranking speed to make spark, or that they fail too often. I have no direct experience.

Thanks for any guidance.
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post #2 of 12 Old 01-26-2017, 07:31 AM
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398811 IS the part number for the HEI set up. gut the old points and other stuff out of there 2 screws hold it in the air gap .010 use a business card to set the air gap.that is BRIGGS part number by the way.

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post #3 of 12 Old 01-26-2017, 08:28 AM
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No more effort required to start it than the old set up..... just a different way of making the spark. I think you will find it starts much easier and runs more consistent as well...... win-win




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post #4 of 12 Old 01-26-2017, 10:33 AM
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electronic ignition all day long... you can hear that spark poppin' across the room!



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post #5 of 12 Old 01-28-2017, 11:53 PM Thread Starter
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Took the blower housing off and found a dead electronic retrofit coil. Argentine made. Coil ohms were only about 2.5 K which seems low.

Is there any way to check these things out other than by substitution? I ordered a new one, only about $15 for aftermarket, but I don't know about the quality and reliability.

Briggs is good on service literature but I haven't seen anything that really explains how the various systems actually work, especially the electronic varieties.
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post #6 of 12 Old 01-30-2017, 02:51 PM
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Quote:
Originally Posted by amuller View Post
Took the blower housing off and found a dead electronic retrofit coil. Argentine made. Coil ohms were only about 2.5 K which seems low.

Is there any way to check these things out other than by substitution? I ordered a new one, only about $15 for aftermarket, but I don't know about the quality and reliability.

Briggs is good on service literature but I haven't seen anything that really explains how the various systems actually work, especially the electronic varieties.
What aftermarket part did you get??????????????

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post #7 of 12 Old 01-30-2017, 07:12 PM Thread Starter
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The coil/armature is numbered 26-1920 and cost about $15 from Amazon. Chinese. Various vendors have these and call them a "new design."

Ignition coil for Briggs& Stratton 398811, 395492, 398265- New Design

They seem to lack a separate trigger pickup or coil. So how is timing controlled? Do they have something like an Atom module built in?

I haven't tried it on an engine yet.

Alan
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post #8 of 12 Old 01-31-2017, 03:20 PM
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Originally Posted by amuller View Post
The coil/armature is numbered 26-1920 and cost about $15 from Amazon. Chinese. Various vendors have these and call them a "new design."

Ignition coil for Briggs& Stratton 398811, 395492, 398265- New Design

They seem to lack a separate trigger pickup or coil. So how is timing controlled? Do they have something like an Atom module built in?

I haven't tried it on an engine yet.

Alan
Can't really say on that 1. if it was me I would just use the OEM part. the engine timing is set inside on the crank and cam shafts.

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post #9 of 12 Old 02-02-2017, 11:43 AM
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Ignition modules have all of the components sealed inside the plastic housing. They are very simple. I think they have 2 maybe 3 components and the coil itself. The timing is fixed based on the position of the ignition module in reference to the flywheel. Since you can only bolt the ignition module to the engine in one spot and the flywheel is keyed to the crankshaft, the timing is not adjustable.

Toro 828 LXE
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post #10 of 12 Old 02-06-2017, 12:25 AM Thread Starter
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I'm seeing so much contradictory info on line that I don't know what to think. Maybe somebody here can sort it out for me.

I have a Briggs 7 hp snowblower engine Model 170402 Type 1185 01 Code 710526

This engine originally had points but when I got it there was a generic Argentine-made electronic coil on it. The type with the visible trigger coil silver button. No spark.

Assuming the coil must be bad, as I was installed correctly, I ordered another generic coil, this one labeled "new design" and without a visible trigger coil. No spark with this one either.

As for the flywheel magnet business, there is one magnet, per Briggs usual, and it attracts the South marking on a compass dial. Magnet strength seems normal.

I'm at a loss. Suggestions?

Thanks!
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