General Lou Posted April 28, 2020 Share Posted April 28, 2020 Stage 4, arm: This part is like the other cylinder. I place a 3x8mm screw through the tube and put the tube into the cylinder. I hold it in place to screw in the next step. Arm component 4-2 goes in the other end of the cylinder and I screw the parts together through the tube in the previous step: Now I put a rubber washer on the end of part 4-5 and screw it in with a 2x4mm screw. I put this into the cylinder, washer end first: I put 2 plastic grips on assembly 2-4/2-5 from stage 2 and put it in part 4-1. Next I rest the two pistons, so they line up with the holes. Screw a 3x16 to the right piston from the back, and a 3x20 to the right piston from the back. They may not stay in until you put the part 2-3 from stage 2 over and screw the two long screws into it: Stage 4 complete **IMPORTANT** I put the bicep and tricep on the wrong way around. Here is the correct way: Quote Link to comment Share on other sites More sharing options...
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