McCulloch MAC BVM 250 Spare Parts List
![McCulloch MAC BVM 250 manual cover](/images/lsAxFbnkiqvHLykghfuwfDLN/thumbs/thumb175x175.webp)
To start the McCulloch MAC BVM 250 Blower, first ensure the blower is on a flat surface. Set the choke to the full position, press the primer bulb 5 times, and pull the starter rope until the engine fires. Move the choke to the half position and pull again until the engine starts. Finally, set the choke to run.
The McCulloch MAC BVM 250 Blower requires a fuel mixture of 40:1, which is 3.2 ounces of 2-cycle engine oil per 1 gallon of unleaded gasoline.
If the blower won't start, check the fuel level and ensure it's fresh and properly mixed. Inspect the spark plug for damage or wear and replace if necessary. Ensure the air filter is clean and the choke is set correctly. Also, confirm the primer bulb is not damaged or leaking.
Regular maintenance tasks for the blower include cleaning or replacing the air filter, checking and replacing the spark plug if needed, inspecting the fuel filter, and checking the fuel lines for any signs of damage or leaks.
To clean the air filter, remove the filter cover and take out the air filter. Wash it in warm, soapy water, rinse thoroughly, and let it dry completely. Reinstall the filter once dry.
Excessive vibration may be caused by loose parts, unbalanced impeller, or debris caught in the blower. Check and tighten any loose screws, inspect the impeller for damage or debris, and clean the blower housing.
To improve performance, ensure the air filter and fuel filter are clean, use the correct fuel mixture, and regularly maintain the spark plug and carburetor. Keeping the blower free of debris and damage will also help optimize performance.
For off-season storage, drain the fuel tank and run the blower until the engine stops. Clean the blower thoroughly, inspect for any damages, and store in a dry, cool place away from direct sunlight.
If the blower starts but stalls, check the fuel mixture, inspect the air filter for clogs, and ensure the carburetor is adjusted correctly. A dirty spark plug can also cause stalling, so inspect and replace if necessary.
To replace the spark plug, disconnect the spark plug boot, remove the old spark plug with a spark plug wrench, and insert the new one. Ensure it is properly gapped to the manufacturer's specifications before tightening and reattaching the boot.