3 Hours Ago
Very straight forward it is. The only thing that I guess could be said that is delicate, is if you want to disassemble the whole carb for cleaning. Two things.... On the pump side is a little screen that sits in a recess, about 3/8" in diameter or so. You can pop that out with a pointed thing like an ice pick. It can have dirt in there. If you shoot air at it, it can fly out to who knows where. On the opposite metering side, when removing the screw that holds the little pin that holds the metering lever that raises the metering needle up and down with the diaphragm pulsations, there is a tiny spring that sits in a little recess beneath the lever. You need to be mindful that it doesn't fly out and disappear when you take out the screw holding the horizontal pin. Keep you finger on the metering lever for control when removing the screw, then carefully taking finger pressure off the lever will allow it to be lifted away and the spring is sitting there accessible. It probably fell over. Taking the screw out, then releasing the pin and taking out the spring and metering lever, then allows you to lift out the metering needle if it has slipped off the end of the lever. If you bought the whole rebuild kit and not just the diaphragms with gaskets, there will be a new metering lever and needle with it. Metering levers don't normally get buggered up unless they've been tweaked, but it's good to replace the needle. The metering lever should sit flush with the surface of the carb body around it or a slightly raised ridge (flat or ridge depends on carb model) when everything is assembled, or else it needs to get bent to be like that. There must be videos and stuff on the net that clearly explains that if in doubt. It's all very simple really, but trying to describe it may make it not seem that way.
Putting the spring back in and having it match up beneath the lever like it should be can be a little fiddle. I like to set the spring in its little recess standing up, then after putting the pin through the lever and hooking the needle on the end, drop the affair down in place without the spring tipping over. The horizontal pin has to fit into it's groove and the screw put in over that holds it all in place. Pretty self explanatory really when you see it.