EngineBlock.stl 1pc

CrankShaft.stl 1pc (Print the crankshaft on its end with support. Simplify3D recommended)

PistonArm.stl 8pcs

PistonHead.stl 8pcs

Handle 1pc

CrankshaftClamp 2pcs

• Drill 4 holes in the Engine block to secure the 'Crankshaftclamp'
• Connect the piston arms to the piston heads
• Connect the piston arms to the crankshaft (make sure the hook is secured)
• Tap the end of the crankshaft M4x0.7mm
• Use 3x M4 flat washers as spacers between the crankshaft end and the handle
• Secure the handle to the crankshaft with a 10mm long M4x0.7mm socket cap screw
• Place the assembled crankshaft into the engine block
• Screw on the clamps with self-tapping screws
• (optional) Use silicone based oil to lubricate the cylinder walls, piston wrist, and crankshaft for smoother use
• Use the handle manually or use a 3mm shaft motor for eaiser use.