McCulloch M51-190WF Operator's Manual
![McCulloch M51-190WF manual cover](/images/gfCkecAYyhriYVQPZgGkxXVV/thumbs/thumb175x175.webp)
To start the McCulloch M51-190WF, ensure that the fuel tank is filled and the oil level is sufficient. Prime the engine by pressing the primer bulb 3-5 times, pull the starter rope firmly, and release gently when the engine starts.
Use unleaded gasoline with a minimum octane rating of 87. Avoid using gasoline with more than 10% ethanol content to prevent damage to the engine.
Change the oil after the first 5 hours of operation, and then every 50 hours or at least once a season to ensure optimal performance and longevity of the engine.
Before storing for winter, clean the mower, change the oil, drain the fuel tank or add a fuel stabilizer, and remove the spark plug. Store in a dry place to prevent rust and corrosion.
The cutting height can be adjusted using the height adjustment levers located on each wheel. Choose from the available height settings to achieve the desired cut for your lawn.
Check the fuel level, ensure the spark plug is connected and in good condition, verify that the air filter is clean, and make sure the engine is properly primed before attempting to start again.
Disconnect the spark plug wire for safety, tilt the mower to access the blade, use a wrench to remove the blade bolt, and replace the old blade with a new one, ensuring it is securely fastened.
Uncut patches can be due to a dull blade, uneven ground, or incorrect cutting height. Sharpen or replace the blade, and adjust the cutting height as needed to ensure an even cut.
Remove the air filter cover, take out the filter, and clean it with compressed air or wash it with mild soap and water. Allow it to dry completely before reinstalling.
Regular maintenance includes checking and changing the oil, cleaning or replacing the air filter, sharpening the blade, checking the spark plug, and ensuring all nuts and bolts are tight.