FATGUY
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I'm putting the finishing touches on that overdue Poulan "Pro" 4218 rebuild and have to get the basic settings of the H and L needles, .... before I realized that poor compression was my problem I started messing with these settings and assume they are fubar; in the absence of knowledge I set them at 1 1/2 turns (360* plus 90*); also I ran into an unexpected snag with the chain brake: there's a strong spring that needs to be compressed and held that way as the sub-assembly goes on the side. Similar assemblies have had conveniently placed holes where a drill bit would hold a spring until placed, then the bit is pulled out, releasing the spring. No such luck here. If necessary I can drill some for myself, but there may be a smarter way. If anyone knows what I'm rabbiting on about I'd appreciate getting a pointer or four, ... thanks , ... :jester:
I don't think I can help you with the brake but as fa as the carb goes, if it won't start/stay running, I'd start turning the screws in. I usually start at 1 to 1 1/4 out on carbs I rebuild.