John Deere QuikTrak Pro 648R Operator's Manual
![John Deere QuikTrak Pro 648R Mower manual cover](/images/VAPKgDeDxVojDidwxTzsPOdl/thumbs/thumb175x175.webp)
To adjust the cutting height, locate the height adjustment lever on the mower deck. Move the lever to the desired height position, which is marked on the deck. Ensure the mower is on a flat surface for accurate adjustments.
The recommended maintenance schedule includes checking the engine oil and air filter before each use, sharpening the blades every 25 hours of operation, and changing the engine oil and filter every 50 hours. Refer to the owner's manual for a complete schedule.
Uneven cutting can be caused by dull blades, improper tire pressure, or an uneven deck. Check and sharpen blades, ensure all tires are inflated to the recommended PSI, and adjust the deck level if necessary.
After use, allow the mower to cool down, then use a hose to remove grass clippings from the deck and wheels. Avoid using high-pressure washers to prevent damage. Dry the mower thoroughly to prevent rust.
To replace blades, ensure the mower is turned off and safely elevated. Use a wrench to remove the blade bolts, then replace the old blades with new ones, ensuring they are aligned correctly. Tighten the bolts securely before lowering the mower.
If the mower won't start, check the fuel level, battery charge, and ensure the safety switches are engaged. Inspect the spark plug for wear and replace if necessary. Consult the manual if the issue persists.
Check the tire pressure before each use to ensure optimal performance and even cutting. Refer to the manual for the recommended PSI levels for all tires.
It is not recommended to mow wet grass as it can lead to uneven cuts, clogging of the deck, and potential damage to the turf. Wait until the grass is dry for best results.
Perform a safety inspection by checking all safety guards and shields for integrity, ensuring the safety switches are functional, and inspecting belts and blades for wear. Address any issues before operating the mower.
The 648R Mower is designed to run on unleaded gasoline with an octane rating of 87 or higher. Avoid using ethanol blends above E10 to prevent engine damage.