Do you have all the parts needed for your chain saw? Now you can start assembling it. Ensure you are wearing protective gloves whenever necessary, including every time you are in contact with the chain.
Step 1 of 15: Lay the individual components (engine, chain, guide bar, combination wrench) on a suitable, clean, flat work surface. You may wish to place some soft material (e.g. carpet) underneath to avoid any damage to the machine or the floor.
Step 2 of 15: Place the power head in an upright position and remove the nuts with the combination wrench. Then remove the chain sprocket cover.
Step 3 of 15: Turn the chain tensioner to the rear (anti-clockwise) so that the tensioner slide butts against the housing slot (toward the chain sprocket).
Step 4 of 15: Always wear gloves when working on the chain because of the high risk of injury from the sharp teeth. Start by picking up the chain and guide bar and route the chain around the guide bar, starting at the bar nose. Make sure that the chain is running in the correct direction => (refer to picture).
Step 5 of 15: Then turn the chain round until the bar is lying completely inside the chain.
Step 6 of 15: Check again that the chain is correctly positioned on the guide bar and is pointing in the correct direction. The cutter should be on top of the bar and pointing forwards.
Step 7 of 15: Now pick up the chain and guide bar assembly and route the chain round the sprocket. Push the guide bar over the mounting studs and the tensioner slide and into the hole provided.
Step 8 of 15: Replace the sprocket cover on the engine unit and tighten both nuts hand-tight. This prevents the bar and chain from slipping, allowing you to safely adjust the chain tension.
Step 9 of 15: The chain is now loose and sags. This can be seen because the chain drive links are not engaging in the bar groove.
Step 10 of 15: Now tighten up the tensioning screw until there is very little chain sag on the underside of the bar and the drive link tangs engage in the bar groove.
Step 11 of 15: Now raise the bar nose and turn the chain tensioning screw a bit more. The drive links should engage in the bar groove.
Step 12 of 15: Now tighten the mounting nuts firmly with the combination wrench.
Step 13 of 15: Make a visual inspection of your machine to check that the chain is engaged with the bar groove and is not sagging.
Step 14 of 15: Then check that you have not overtightened the chain. Pull the chain by hand in the direction of rotation (first release the chain brake as otherwise it will not turn). It is essential to wear work gloves when doing this, to avoid the risk of injury from contact with the sharp chain. If the chain will not move, slacken the nuts and repeat the previous steps.
Step 15 of 15: Your chain saw is now fully assembled. Now activate the chain brake again.