adsm08 3,971 #26 Posted 21 hours ago On 1/8/2026 at 6:44 PM, Handy Don said: So the bolt replaced the solenoid valve? I’m thinking a spring-loaded needle pulled open when powered so with the bolt it was “always open”? It amazes me that a couple of $1 diodes could completely protect the electronics from reversing the battery cables but they aren’t there. Yes, the bolt replaced the solenoid, but you have the wrong idea about what the solenoid looks like. The carbs that have them all have a regular needle and float, the solenoid screw in where a bowl bolt should be, and has a plunger with a rubber plug that resembles the tip of a .22 bullet. The plunger does retract when powered, but it blocks the bowl end of the main jet to shut off fuel, rather than closing the needle to shut off fuel coming in from the tank. And yes, a few $1 diodes could prevent them from selling a lot of $300 controller boards. 1 1 Share this post Link to post Share on other sites
