neo33ny

I'm rebuilding the carb on my LT160. I'm having trouble getting the needle jet back in. The old one seemed to push in so it stuck up like a sixteenth of an inch inside the carb. I even tried putting the old one back in and same thing. They won't push in far enough so I can get the bleeder to screw back in. I'll post a diagram so you know what I'm talking about. It's numbers 16 and 20 on the diagram I'm having the issue with. Any help is appreciated.

Long story short, I have an lt160 with a quad racer swingarm. It needs new front pivot bearings. Whoever swapped the swingarm used pipe and stacks of washers to space it but it still seemed to have quite a bit of play. My question is how would I go about spacing it more "legit"?. It's just going to be a beater for around the farm but I don't want it totally cob jobbed. From the looks of it, it's just a matter of aligning it, measuring and finding something to shim the gaps. Correct me if I'm wrong or if there's a better or proper way to go about this. Also not sure what I would use for spacers. Any help/tips would be appreciated. Thanks.