Jonsered BC2235 Parts Manual

To start your Jonsered BC2235 Trimmer, make sure the trimmer is on a flat surface. Set the choke to the closed position, press the primer bulb several times until fuel is visible, and then pull the starter rope. Once the engine starts, move the choke to the open position.
The Jonsered BC2235 Trimmer requires a fuel mix of 50:1, which means 50 parts gasoline to 1 part 2-stroke oil. Use unleaded gasoline with a minimum octane rating of 89 and high-quality 2-stroke oil.
To replace the trimmer line, first turn off the trimmer and disconnect the spark plug for safety. Remove the spool by pressing the tabs on the side of the trimmer head. Cut two equal lengths of the line, insert them into the holes on the spool, and wind them evenly. Reattach the spool and ensure it is secured properly.
If the trimmer stalls after starting, it could be due to a clogged air filter, incorrect fuel mixture, or issues with the carburetor. Check and clean the air filter, ensure the fuel mix is correct, and inspect the carburetor for any blockages or need for adjustment.
To prevent overheating, ensure that the air vents are clean and unobstructed. Use the correct fuel mixture, and avoid operating the trimmer at full throttle for extended periods. Regular maintenance, such as cleaning the cooling fins, can also help.
Regular maintenance includes checking and cleaning the air filter, inspecting and replacing the trimmer line, checking the spark plug condition, and cleaning the cooling fins. It's also important to inspect the fuel system for leaks and ensure all screws and bolts are tightened.
To adjust the carburetor, locate the adjustment screws, typically labeled H (high speed) and L (low speed). Turn the screws gently to achieve optimal engine performance, ensuring not to over-tighten. Consult the user manual for specific adjustment instructions.
Excessive vibration may be caused by imbalanced or damaged trimmer line, loose parts, or a damaged drive shaft. Inspect the trimmer line, ensure it is installed correctly, check for any loose screws or bolts, and examine the drive shaft for any signs of damage.
Before storage, clean the trimmer thoroughly, empty the fuel tank, and run the engine until any remaining fuel is used up. Remove the spark plug and add a few drops of oil into the cylinder to prevent rust. Store the trimmer in a cool, dry place away from direct sunlight.
If the trimmer is hard to start, check the spark plug for wear or damage, ensure the fuel mixture is fresh, and inspect the air filter for blockages. Also, verify that the choke is functioning correctly and that there are no fuel line obstructions.