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Discussion Starter · #1 ·
88 JS550 that sat about 4 years, ran perfect before. Has some gas sitting, but I have fully cleaned out all pipes, tank, filters. Tuned up, new battery, plugs, gas/oil mix.

1. It has spark in both plugs
2. Cranks fine, turns over/rotates fine
3. The compression is ok
4. I manually pulled the fuel up to the filter bowl, but I don't know if it is primmed from there.

What can I try now? I'm pretty sure everything is in good condition, but it just won't start, I haven't cranked it too much yet.

I have a service manual.

What can I try next?
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