John Deere 42-Inch Operator's Manual
![John Deere 42-Inch manual cover](/images/7d66b3d33975581ad87c75b1/thumbs/thumb175x175.webp)
To change the blades, ensure the mower is on a flat surface and the engine is off. Disconnect the spark plug for safety. Use a wrench to remove the blade bolts, replace with new blades, and tighten securely. Reconnect the spark plug before use.
John Deere recommends using SAE 10W-30 oil for their 42-Inch mowers, but always check the owner's manual for specific requirements.
Check for a charged battery, clean connections, and ensure the fuel is fresh. Examine the spark plug for wear, and replace it if necessary. If issues persist, consult the manual or contact a professional.
The recommended tire pressure for most John Deere 42-Inch mowers is 10 PSI for the front tires and 14 PSI for the rear tires. Verify with your specific model's manual.
It's best to check the air filter every 25 hours of operation and replace it every 100 hours or annually, whichever comes first. Replace sooner if it's dirty or damaged.
To clean the deck, remove any grass buildup with a brush or scraper. Wash the deck with a garden hose, making sure the mower is turned off and the spark plug is disconnected. Allow it to dry before storing.
Locate the height adjustment lever on each wheel of the mower. Move the lever to the desired height position, ensuring all wheels are set to the same height for an even cut.
Excessive vibration may be due to an unbalanced blade or debris caught in the deck. Inspect and balance the blades and clean any debris. If vibration continues, consult a technician.
To winterize, clean the mower thoroughly, change the oil, and drain the fuel system. Remove the battery and store it in a cool, dry place. Cover the mower to protect it from dust and moisture.
Uncut strips may be due to dull blades, incorrect deck level, or clogged discharge chute. Sharpen the blades, check and adjust deck level, and clear any obstructions in the chute.