GS1100 Crank turns 180* then catches

[rapidray]

Change the orings on the front, center 2 head nuts while you are in there. Put some grease on the orings before you put those nuts back in & make sure the holes they go in are clean. Heck, you might as well lap the valves & change the valve seals too while it's apart if they are old. Make sure you pull the cylinders & replace the base gasket since you've broken the seal on that too.
Ray.

[jbthomp]

Hey look on the bright side at least you won't have to replace the head gasket again

[tkent02]

It fell straight into the cylinder?

Wow, what are the odds of that? You could try 100 times and not get one in the hole.

[blowerbike]

i mentioned that before i pull plugs that i spray the area with compressed air.
you never know what's sitting in that area over time/kid's/squirrels...