Swiss Toni

And welcome to OSS, too!

Carry on with your stripdown. Once you’ve split the cases, lay them on a flat (kind to alloy castings) surface. Get your doughnut loving best pal to stand on the case, while you loosen the oilway plugs.

There’s ‘77-‘82 and an ‘83 manual for the 550 on there.

Well said, that man!

Have you tried Carl Salter?

25 x 47 x 15 for B6 top bearing only.

Aye aye, Turb. Welcome.

The 49 in the second set of no's denotes basic model no. 49 is GS1000, 45 is GS750. 49002 may have been the up-rated/modified part no for the same model?

Any help, Steve?

Hello mate. Welcome to OSS.

And Clymer are way better than Haynes anyway!

Read a few microfische’s. Check part no’s. Welcome.

Email them with your model and year of manf. And welcome.

I wouldn’t say lengths were different, but owing to the EFE having full fairing ect, the springs may be heavier wound.

Welcome, Dass.

Keep the pictures coming.

Try this. Fit the rear wheel with no spacers outside disc & sprocket, leave the one inside sprkt. carrier alone. Centre wheel roughly by eye. You could also take a measure from sw. arm pin to wheel spindle (both sides) to ensure rear wheel in straight ahead position. Make sure front wheel is in straight ahead position. Run two straight edges (or Brickies string lines) alongside rear wheel (touching it at four points, about 6" off the deck) & front wheel. Measure distances between line & front wheel on both sides. Adjust rear wheel accordingly to ensure equal measurements. This is best done with bare rims. Now align sprockets! You might get away with just an offset sprocket. If not, you're going to have to take material off the carrier. Sometimes you can reverse the rear sprocket, if it's dished, giving you a few mil. When that's sorted, make your new wheel spacers.

That’s good to know!

Yes.

Welcome.

Welcome to the club, Steve!

Another one for ‘Option 4?’

Yup! Welcome to OSS!

I had a certain 6 cylinder bike from Kansas. Notorious for hydraulic lock on #1 pot. 45deg. bend in rod. Which I wasn’t told about! It still turned over. Worse case scenario is the bent rod could break the bottom of the liner. More money! I doubt you will have put enough oil in the cylinder to cause this problem. We’re talking about a substantial amount of fuel/oil to hydraulic lock. Stop worrying!

If you have to strip the motor, because of seized rings, as 1460 says, steep the crowns in solvent/diesel. If still stuck, put meths in the crowns, and ignite. Usually frees them off. When free, remove rings carefully (one piston at a time, to save mixing up), soak some string in petrol and using the ‘Diablo’ method, clean the ring lands out. Refit if serviceable.