Author Topic: 028 ignition problem  (Read 333 times)

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Offline mark3885

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028 ignition problem
« on: February 22, 2014, 09:42:18 pm »
I picked up a non running saw from my brother. It will only fire enough for a pop and an occasional 5 second run. The spark is weak and intermittent , I was thinking to replace the points with a Nova module so I won't have to pull the flywheel . The spark will only jump an 1/8" gap . I adjusted the air gap with  a business card and the spark was a little stronger  but not good enough. Should I put in the Nova module and a new coil?

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Offline Fish

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Re: 028 ignition problem
« Reply #1 on: February 23, 2014, 08:37:14 am »
Get a good used coil off of an 029/ms290, it is electronic, just cut the wire to the points, hook up the kill wire, and go cut wood!

Offline Al Smith

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Re: 028 ignition problem
« Reply #2 on: February 23, 2014, 10:57:46 am »
More than likely if you just burnish and re set the points it will work .More times than not problems with a points type ignition are  on the low voltage portion of the circuit .

Offline mark3885

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Re: 028 ignition problem
« Reply #3 on: February 23, 2014, 11:17:36 am »
I would like to burnish and reset the points today , but I don't have a flywheel puller.  If it doesn't  come off easy, I'll have to get a puller. Any idea what the points gap is?

Offline mark3885

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Re: 028 ignition problem
« Reply #4 on: February 23, 2014, 11:19:52 am »
The 029/ms290 coil is a great idea, didn't know it could be used.

Offline Fish

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Re: 028 ignition problem
« Reply #5 on: February 23, 2014, 11:32:40 am »
Points should be set at .016

Offline Fish

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Re: 028 ignition problem
« Reply #6 on: February 23, 2014, 11:34:19 am »
Yes that coil is found on most of the mid range saws, the great thing is you don't have with trying to remove the flywheel.

Offline Al Smith

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Re: 028 ignition problem
« Reply #7 on: February 23, 2014, 11:42:54 am »
I looked on both the big orange book and the micro fiche and couldn't find a thing on points gap .I assume about 18 thou would do it though .I found it interesting the max advance on a solid state ignition is 30 degrees at 8,000 rpm .

Offline Fish

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Re: 028 ignition problem
« Reply #8 on: February 23, 2014, 11:45:54 am »
.4mm or @ .016"

Offline Al Smith

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Re: 028 ignition problem
« Reply #9 on: February 23, 2014, 11:46:26 am »
Oh probabley the 029 would be a better deal especially if it's a self advancer .I don't find points a big deal but a lot of folks do .At least with a solid state it either works or it doesn't .

 

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