Moto guzzi woes

[Trev]

having said about the inner filter, how many people clean the sump filter inside when they do an oil change on Jap bikes.? its there for a reason like the screw on filters but often forgotten.

Damn good point, don't think I've ever done that on a Jap bike, must check the manual next time. The enfield has a (bloody small) paper filter and a gauze jobbie and two drain points and with loads of baffling it's pretty near impossible to get all the old oil out and then figure out how much to put back in

[WR6133]

don't think I've ever done that on a Jap bike

I looked at the one on the ZZR400 lump after I swapped in the 600. At 90k miles it had bugger all in it so I've since concluded there is no point.