More that likely all you will need to do is R&R the carb diphraghms/gaskets. It takes a much longer time to 'varnish up'.
Also check the condition of your hoses and fuel filter.
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Bill Walcott
Brauchi Bros Inc-almost 50 yrs with HOMELITE
700 N 12th
Marysville KS 66508 USA
785-562-3539