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Post by jclark on Aug 23, 2019 7:23:09 GMT -5
I recently aquired, a new to me Wiz. The saw is complete and in good condition, excellent spark. My question is the compression. This saw has been sitting forever so I'm sure any lubrication in the cylinder is gone. It turns over well and the compression is 120 psi. Is this sufficient?
Thanks
Jon
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Post by ronaldt on Aug 23, 2019 8:32:07 GMT -5
In my opinion, that's decent compression for an old saw that's sat a long time. You could put penetrating oil in the cylinder to help unstick the rings and maybe up a little more compression.
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Post by jclark on Aug 23, 2019 8:57:08 GMT -5
My thought too on the penetrating oil. At least I know it's not a total waste.
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Post by Brennan on Aug 23, 2019 9:12:33 GMT -5
What I’ve done on my saws is for the first tank of gas I mix it pretty heavy on the oil ( 30:1) then go back to around 40:1 for regular use. Before starting I would also put something like wd40 down the spark plug hole and then cycle the saw slowly to force it into the rings
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Post by edju1958 on Aug 23, 2019 9:48:39 GMT -5
As I understand it the older saws didn't have a giantcompression reading to begin with,so if you put some type of lubrication in te cylinder & get those rings freed up I think you'll find that Wiz wasn't used tat much.I'd go even richer on te initial tank,like 28:1 & ten continue to run it at 32:1.I don't know as I'd go any leaner that that.Just my opinion. Ed
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