Hey guys i could really use some help. I need to get a flywheel puller for my newly acquired 83 yz80. It doesn't take the standard 27mm x 1 puller used on most bikes. The threads on the flywheel look like either 17mm x1.5. I searched the internet and could find anything. I do not have a service manual yet i know that would have a part number for the yamaha tool. Any help here would be appreciated.