250-500cc Worked on the bikes today (1999 WR250 and 1980 Yamaha IT250)

Just a few shots of the bikes today. 's starting to get warm enough to work in the sun! Was able to mount up my NOS exhaust on the WR250, as well as really soak the rear chain adjuster bolts that are stuck. Thanks for all the replies in my other thread about these stuck bolts. Gonna follow everyones advice.

My brother's 1980 YAMAHA IT250 is coming along nice:

THIS IS MY OTHER BIKE A 1982 YZ490 IN A 1988 YZ250 ROLLER

did you soak the chain adjuster from the inside and outside or just the outside?
if only the outside make sure to do the inside as well,
most swingarms have a hole to allow for welding expansion
these usually have a rubber plug in the modern ones and pull the plug and soak the back of the adjuster
in extreme cases remove the swingarm and stand it up so the penetrant gets down to the threads

That thing is so sweet!