need help with my 1983 maico

Found this in the Yahoo Maico Group.

Some of the 1983 Maico bikes originally had a nylon screw in the
clutch cover for checking the oil height. This screw is located on
the part of the forward part of the clutch cover where it covers the
crankshaft area. Not all of the bikes have this screw. If you bike
does not have this screw it will still have the dimple that was cast
into the cover indicating where the screw should be installed.

Originally Maico specified 650cc of oil in the 1983 bikes. Later (I
would suspect the same time they stopped drilling and tapping the
hole in the sidecover) they started specifing 800cc of oil. I think
there was a tech bulletin issued on the change in oil quantity
specification. The 1983 manual was not changed, but if you look at a
1985 or later manual you will see that those manuals specify 800cc in
the transmission. The motors are basically the same.

As far as the transmission, there are 3 1983 490 transmissions. FL,
FK, and D. FL and FK are four-speeds one is a close ratio and the
other is a wide ratio, and the D is a wide ratio five-speed.

You might also see some mis-stamped 250 motors with FK or FL instead
of C. I have seen two of these and they were still 5 speed bikes.

If you have the sidecover off the bike, you might want to take a die
grinder and relieve the area underneath the oil fill hole. Maico
made the clearance so tight between the cover and the clutch that it
takes seemingly forever to fill the case with oil.

Not really sure which one is the drain. One is for the transmission and the other is the drain.

From what I can tell the bolt on the right side is the oil drain.

#20 in the diagram

http://www.socalmaico.com/partslists/83_490engine.html

One of these day I'll build mine that I've had in boxes for almost 9 years!

Take a look at #179, I believe that is the other bolt and it looks like a detent for the shifting.