C&O Allie posted:Peter,
In the picture below, the circled Hex Screws came off using the tool that came with the engine (for traction tire replacement). The other screw on the main rod just needs the right size Allen Wrench. The last screw (on the Attachment Point Bracket) is a smaller Hex Screw. I have several mini screw driver sets with different tips, so I had all that I needed to do this.
Did you take the shell off the frame to get the running gear off the wheels?