Aldy 0 #1 Posted July 4 Hello Have cleaned the carburettor and am attempting to tune the carburettor to obtain a tick over speed. My mower has the plastic jet which appears to be a simple push on fit. However when tightening the adjuster screw it reaches the point where the jet falls out Should there be a retainer other than the plastic and steel washers. When the adjustment screw is open the jet is a tight fit. Would appreciate your views Share this post Link to post Share on other sites