Gearbox noise Suzuki GSX400F

[Copyhat]

I've just acquired a 1983 Suzuki GSX400F 4-cylinder bike. Runs fine, but I think that the gearbox rattles a bit too much when the clutch lever isn't pulled in (even in neutral). I'm used to a bit of rattle, but this is very audible on this one. Could it be a bearing in the gearbox?
____________________
Past: '91 Honda NTV650, '93 Kawasaki GPZ 500S
Current: '91 Honda VFR750F, '83 Suzuki GSX400F

[RhynoCZ]

It could be the clutch basket.
____________________
'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Copycat73]

one of the problems with that bike was / is that the recommended oil level is too low ... subsequent it was recommended to over fill..
____________________
Whatever I post I have no citation and no intention of providing one..
caveat emptor

[Copyhat]

The clutch basket is a good guess. The gearbox is making a whirring noise when engine braking.

Yup, have heard the same from the former owner. The oil is just over the max marking, and it's fresh too.
____________________
Past: '91 Honda NTV650, '93 Kawasaki GPZ 500S
Current: '91 Honda VFR750F, '83 Suzuki GSX400F

[Robby]

Balance the carbs. Tends to settle down noisy clutch baskets.

[MikeKP61]

Sounds like clutch release bearing.