78 GS550 very hard to shift

[Guest]

I have a 78 GS550. When I first get the bike running I find it almost impossible to shift into 2nd. I can get into 1st easily enough but with a mighty clunk. Then going into 2nd the shift lever feels almost seized. After a few attempts it will shift but again with a huge clunks. After about 3 or 4 mins of riding it all smooths out. Shifts through all the gears happily and normally. Sound becomes normal as well. Almost like it just needed to warm up. Any thoughts as to what could be causing this?

[cowboyup3371]

Cold oil comes to mind but what is your oil level and when was the last time you changed it? Be sure you are using something made for motorcycles. Diesel oil is also very good for its high zinc content that our bikes need. Do not use regular car oil

[Jmcb]

I just did my spring oil/ filter change. I used 20W50 non synthetic. Maxima.

[Grimly]

I just did my spring oil/ filter change. I used 20W50 non synthetic. Maxima.

Cold clutch drag, exacerbated by the 20W50. If you're loathe to discard the oil, just let it warm up for a minute or two before riding it.
Or, with the bike on the centrestand, pull the clutch in, engage first and apply the rear brake. This will break the stiction of the clutch plates and you're good to go.