Reply To: Neptune model 500 carb/ Tillotson HS93A

[A. Hoskins]

A damaged needle, examined with a magnifying glass, will show a groove or irregularities in the tapered section. If you see such, chuck the needle up in your electric drill, spin it and polish it with some 600 grit wet-or-dry. When the engines “coughs” and dies, pull the plug. Is it wet or dry ? An overly rich mixture (wet plug) usually won’t cough to a stop but it will choke down and stop without spitting back through the carb if that is what you mean. Good luck.

Certified JB weld