I'd say that the fuel tank will need to be thoroughly cleaned out, and maybe the carby fuel pickup strainers as well.
But Briggs engines are generally fairly easy to fix, if they're not worn out - and that machine doesn't look like it's done a lot of work.
Cheers,
Gadge
"ODK Mods can explain it to you, but they can't understand it for you..."
"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."
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