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coil conversions on Briggs & Stratton


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#1 thom OFFLINE  

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Posted December 29, 2015 - 03:35 PM

This may have been dealt with on here before, but ... I think some Briggs engines CAN NOT  be converted to pointless ignition by simply bolting on a "late model" coil, and I know that some can. Which ones won't work? How do I know , other than bolting one on and trying it? The magnet or magnets in the flywheel must be different? THANKS.


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#2 Bolens 1000 OFFLINE  

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Posted December 29, 2015 - 03:38 PM

Correct, Some coils will accept the new conversions but some will not, If you have a model of what one your thinking I may be able to tell you by searching the coil part number in my system.

 

Of course I do suggest keeping OEM points and condensers but I am a stickler for original parts and old technologies :D 


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#3 thom OFFLINE  

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Posted December 29, 2015 - 04:13 PM

Thanks. The engine is on my Bolens G-9. The engine #s are - model 190417, type 0902-01, serial 76011410. I tried a "known good" coil off of a newer engine and get no spark.


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#4 Bolens 1000 OFFLINE  

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Posted December 29, 2015 - 04:21 PM

The coil for that is the B&S 298968 and I believe the Nova modules can be used on them but have never tried it, I dont see any notes not saying the modules cannot be used in my cross references.

 

Have you cleaned the points on this engine before swapping coils? Most of the time a cleaning and possibly replacement of the points and condenser is all that is needed to get spark again. Also sometimes the little plungers get stuck/worn not allowing the points to open all the way.


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#5 thom OFFLINE  

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Posted December 29, 2015 - 04:59 PM

Actually , the points didn't look good. I cleaned them and the engine ran for a few seconds and lost spark again . Cleaning again produced the same results. A few seconds running again then no spark. Then I tried the pointless coil. No spark at all. Today, I bought a set of points and will swap back to the original coil and install the new points tonight.

#6 Bolens 1000 OFFLINE  

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Posted December 29, 2015 - 05:02 PM

make sure you replace the condenser as well (They should come in the kit)



#7 Bruce Dorsi ONLINE  

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Posted December 29, 2015 - 05:11 PM

Actually , the points didn't look good. I cleaned them and the engine ran for a few seconds and lost spark again . Cleaning again produced the same results. A few seconds running again then no spark. Then I tried the pointless coil. No spark at all. Today, I bought a set of points and will swap back to the original coil and install the new points tonight.

 

A few possibilities:

 

Is the point adjustment slipping, allowing the points to stay closed all the time?

 

Do the points need to be re-gapped each time?  .......Rust on the crankshaft (under the oil seal) may be wearing the plunger, affecting point gap.

 

Is oil getting past the seal and coating the point contacts?


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