Clive

Thanks everybody!!! It was my mistake - undid the wrong nut! Now put it all back together and everything OK. I blame Susuki for putting 2 nuts the same size together and not realising a 3rd nut could come along!!

Like the WD40 tip, especially if battery was left connected. Terminals corrode very easily leaving bad/stiff connections.

First Hi to the forum. Just done a stupid thing, changed the oil and filter on my Suzuki GN125. Overfilled the oil but being the lazy genius I am, thought that the excess would be taken up by the new filter. Didn't happen so took out the drain plug and got a surprise present - what I can only surmise is a pressure relief valve - Spring around a circular, piston shaped, metal plug. Now the question can I just shove the "valve" back in and (metal piston part first) and then fill with the correct amount of oil and be happy ever after? or have I seriously done damage that needs fixing? Thanks to all. Just to be clear I undid the wrong bolt (see answers to query). Everything OK now luckily I didn't get a handfull of ball bearings so an easy fix!! and I didn't mess with the gears so went back easy.