1. Unscrew the guide plate nut, Mikushita brake assembly. First install the insertion of wood teeth (new machine).2. Chainsaw normal flat, first guide plate stuck on the two guide plate screws, move the guide plate guide plate to the closest to the sprocket. Chainsaw chain guide teeth flat into the guide plate and sprocket. At this time, you should pay attention to the chainsaw chain head and power steering consistent, that is, the guide plate above the cutter head facing forward, guide plate below the cutter head facing back. And pay attention to the chain saw chain guide teeth and sprocket to ensure that fit.3. Chain loaded and then move the guide plate and sprocket to the maximum distance, and make sure that the chain saw chain and sprocket, the guide plate is completely coincident.4. Adjust the brake assembly adjusting screws guide plate hole jam to the appropriate position, install the brake assembly. Ensure that the guide plate adjusting screw card hole stuck guide plate. 5. Tighten the guide plate nut while adjusting the guide plate adjusting screw, while ensuring that the chain and sprocket, guide plate fit. Note that the chain should not be too tight or too loose, generally pull up the chain from the middle of the guide plate, as long as at least 1/3 of the teeth of the chain guide are still in the groove of the guide plate. After adjusting the chain, you can tighten the guide plate nut completely. Finally, use a screwdriver to hold the back of the cutter head to push the chain to make the chain rotate, make sure the chain is installed and rotates freely.