Does anyone thing such a tool can be used on the GS500 as a valve spring compressor?
http://www.amazon.com/Powerbuilt-648432-Valve-Spring-Compressor/dp/B001CZJ4KO (http://www.amazon.com/Powerbuilt-648432-Valve-Spring-Compressor/dp/B001CZJ4KO)
I don't like those, they can damage the spring.
I prefer valve spring compressors that look like a C-clamp, such as:
http://www.amazon.com/Genius-Tools-AT-09-Spring-Compressor/dp/B000CE8QTQ
No. I think those work better for exposed springs. I bought an 8" C clamp and used it with a piece of pipe with the middle sawed out. It worked great, cost less than 10 bucks.