Originally Posted by clicheche
what is, and where is the countershaft and seal?
i reckon i know the shift shaft seal.
countershaft seal is behind the sprocket.
both the shift shaft and countershaft seals are easy to fix.
there is also a shifter cover on the early dt175 (1974-1976) (held on with four bolts behind shifter) - it has a rubber o-ring around it that could leak, but that's doubtful.. what year is your dt175?
it could also leak between the crankcase halves. or a cracked case could leak... or even the clutch cover could leak.