If you have VMs with choke levers. The right lever can be turned to the position shown in the pic. Angle the lever out as far as you can so you can still get a spanner on the brass hex head, snug it up, then remove the spanner and turn the lever, it will tighten the brass hex head enough to tighten it. Just a tip for those of you who are watching the budget. Add up the spend on building these things and it's frightening, particularly to the wife. You can get a pull choke for these things, but I prefer to keep the levers so both are the same.