This tool is used to remove the old dried and most likely cracked o-rings that allow fuel to drip.
With bad o-rings, it also has the potential to affect performance of the motor.
I include 2 new o-rings with each tool.
Cost of this tool is $30, I will combine shipping whenever possible.
I have instruction sheets free for download, just click the tab at the top of the page "Instruction Sheets" and download it