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Sears 18/6 no fire


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#1 waynegdg OFFLINE  

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Posted September 11, 2015 - 07:23 AM

I've let my Sears sit for the last month or so. Ran like a top last time I used it, now I have no fire. Can anyone point me in the right direction as far as what to check first? Thanks in advance.

#2 crittersf1 OFFLINE  

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Posted September 11, 2015 - 08:26 AM

Points corroded


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#3 boyscout862 ONLINE  

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Posted September 11, 2015 - 09:04 AM

In our Manuals Section you will find the "shop" manuals for most engines. These give instructions for repair and rebuilding the engines covered. Most also have a "Troubleshooting Guide" which can help you diagnose problems. I agree with above that points corroding is most likely but as fall is coming it could be mice building a nest for winter. They chew the insulation off of wires causing shorts. Good Luck, Rick



#4 bbuckler OFFLINE  

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Posted September 11, 2015 - 10:46 AM

Use a multimeter to test your coil if the coil test good then most likely it the points.  Using my SS16 as a example you need to set your multimeter on 200 Ohm the horseshoe looking thing. Then your going to check the primary winding the positive and the negative on the coil

my tested at 4.7 which is correct and then you need to switch over to 20k ohm and test the secondary winding . Remove the spark plug wires

and stick the probes in where the spark plug wires go should between 13K to 18K. Check the manual to find the right specs for it.


Edited by bbuckler, September 11, 2015 - 10:55 AM.


#5 MH81 ONLINE  

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Posted September 11, 2015 - 11:03 AM

I would also be suspect of the switch.
Lately, I've seen good, solid switches just quit working right.

Verify you have 12v at coil + during both run AND start key positions.
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