okie
Saw Builder
Posts: 201
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Post by okie on Feb 26, 2021 11:46:52 GMT -5
EZ chainsaw was running and starting really good and I had some rebuilt Walbro HDC carbs to test run. Was warming up the saw before swapping carbs and all at once spit sputter and wanting to die unless lots of throttling up down. After dying would just sputter when cranking. Sounded like ignition issue by ear? Had a atom chip (points condenser replacement) so I drilled a hole in the bottom installed the chip as a temporary test run to see if points/condenser was ok and saw ran great. Pulled flywheel and all the screws under the flywheel were loose including the condenser mounting screw and the points box screws both inside the points box and outside the points box and the 3 block screws. Applied blue thread lock to the 3 block screws adjusted the points tightened all down and back in business. These saws really do vibrate but this is first one I've seen with all the screws loose under the flywheel. I do not trust the Atom chips for long term use but it was a good for a quick sub test of the points and condenser. Flaming out and caving in turned out to be a good thing. The screws under the flywheel would have eventually got into the flywheel underneath and ripped all to pieces. Now back to testing carbs.
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Post by blythkd on Feb 26, 2021 15:50:49 GMT -5
Every EZ/SEZ and XL-12/SXL series saw I've ever had the flywheel off of now has the screws set with Loctite, even if they weren't loose to start with. And if it was a SEZ with phillips head screws, they got replaced with Torx head screws.
I've seen so many of those saws come in that were "locked up" that ended up being a loose screw behind the flywheel that I made it SOP to Loctite them. When one of those screws comes loose and backs out against a spinning flywheel, things get very tight real fast. I don't know that I ever saw one do serious damage, but it certainly never looked like it did things any good.
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Post by 5terrysupersaws on Feb 26, 2021 16:50:53 GMT -5
EZ chainsaw was running and starting really good and I had some rebuilt Walbro HDC carbs to test run. Was warming up the saw before swapping carbs and all at once spit sputter and wanting to die unless lots of throttling up down. After dying would just sputter when cranking. Had a atom chip (points condenser replacement) so I drilled a hole in the bottom installed the chip as a temporary test run to see if points/condenser was ok and saw ran great. I do not trust the Atom chips for long term use but it was a good for a quick sub test of the points and condenser. I'm curious what Model/Color of ATOM EI Module you are using ?
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okie
Saw Builder
Posts: 201
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Post by okie on Feb 26, 2021 20:09:06 GMT -5
I'm curious what Model/Color of ATOM EI Module you are using ? I happened to have a NLA ATOM chip (color blue) Atom Computerized Ignition Module Type #7 No 1981 Briggs & StrattonYou can review the ATOMS on-line, but ATOM is out of business and very few ATOM (name brand chips around) You can review (get some info) such on-line by searching. The ATOMS are color coded for different ign systems. searching look for a link that shows pictures and part numbers and their color codes as to intended functions. They are also numbered like maybe 1 through 9 or so. This Atom chip that I was using to test this saw just happened to be in a old EZ blue saw that I bought for parts.
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okie
Saw Builder
Posts: 201
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Post by okie on Feb 26, 2021 20:23:11 GMT -5
Every EZ/SEZ and XL-12/SXL series saw I've ever had the flywheel off of now has the screws set with Loctite, even if they weren't loose to start with. And if it was a SEZ with phillips head screws, they got replaced with Torx head screws. I've seen so many of those saws come in that were "locked up" that ended up being a loose screw behind the flywheel that I made it SOP to Loctite them. When one of those screws comes loose and backs out against a spinning flywheel, things get very tight real fast. I don't know that I ever saw one do serious damage, but it certainly never looked like it did things any good. Thanks for that tip. I'll start keeping a heads up on my OTHER EZ's. This was the phillips head holding the case to the block that I used blue locktite. I got a good fitting phillips and tightened them down good. The EZ's really viberate when wound tight. Kinda a stinging vib on the hands kinda like a wood bumble bee drilling holes in wood beams. All the little screws holding other ign stuff had come completely loose.
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