How to Disassemble a Stihl 028 Wood Boss Chainsaw


The Stihl 028 Wood Boss chainsaw, a gas-powered, two-stroke engine, needs continuous maintenance and upkeep to ensure the chainsaw continues to run smoothly. The chainsaw must be disassembled and cleaned after every use. It will also need disassembling during any repair work, so it is a crucial task that all 028 operators should learn. While disassembly and cleaning will improve performance, it will also ensure the chainsaw lasts many years. Wear protective gloves at all times when handling the 028.

Things You'll Need

  • Bar combination tool (scrench)
  • Circlip pliers
  • Leather work gloves
  • Pull the front hand guard back against the front handle to disengage the chain brake. Loosen the bar nuts with the wrench end of the combination bar tool until they are finger tight. Release the chain's tension, unscrewing the bar adjustment screw counterclockwise with the screwdriver end of the bar tool.

  • Take the bar cover off the bar posts. Lift the bar and chain off the bar posts and away from the drive sprocket. Pull the chain off the bar. Unscrew the six pan-head screws holding the side plate, on the bar posts, and the cover, sitting around the drive sprocket.

  • Pop the E-clip off the crankshaft stub, driving the screwdriver tip underneath the clip and wedging it off. Pull the thrust washer and E-clip off the stub. Pull the circlip off the stub using the circlip pliers.

  • Pull the second washer off the chain sprocket. Take off the drive sprocket cover as well. Turn the oil pump drive worm clockwise while pulling it off the pump shaft. Pull the chain sprocket and needle cage off the crankshaft.

  • Unscrew the top cylinder cover with your screwdriver. Unscrew the two screws holding the filtration screen above the carburetor. Unhook the rubber boot covering the spark plug. Unscrew the spark plug from the cylinder using the wrench side of the bar tool. Reinstall all parts in reverse sequence.


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