I just bought a running Sachs moped today in pretty good condition. The bike already ran about 25mph but it had a few quirks. I went through and did the usual "fred's guide tune up"
I also removed most of the rust with muriatic acid.
It has a 52 main jet and a very restrictive looking airbox...so I think that I should be able to get another 3-4mph with some tuning. It also has the cutest bing carb ever...its so tiny...and its rectangular, not like the ones on puchs
So the bike shoudl run great...BUT I've got a big problem that probably has a simple solution.
I wanted to check the transmission oil, so I pulled the fill to plug. Nothing came out. So I unscrewed the top plug and added the trans oil until it ran out the bottom plug.
Now I can't get the top plug back in! What am I doing wrong?!
It is a long bolt as you can see in the pictures below, and has threads on the top. It is not stripped, but it won't go into the transmission case far enough to allow the threads to catch. I have tried tapping it in with a hammer, I've tried hammering and screwing at the same time. I've also tried pedaling and screwing at the same time.
I am threading the correct way.
I thought that perhaps there was a burr on the lip so I sanded it with my dremel. It made no difference. I also tried making the bevel at the end shaper so that it would slide in easier..still no luck.
Take a look at the pictures and see if you can help.
<IMG src=" http://www.rpi.edu/~wilsom/a.jpg"> ;
<IMG src=" http://www.rpi.edu/~wilsom/b.jpg"> ;
<IMG src=" http://www.rpi.edu/~wilsom/c.jpg"> ;