John Deere 14,16,18,10,12. 1988, 1989 Operator's Manual
![John Deere 14,16,18,10,12. 1988, 1989 manual cover](/images/cf0185fab98fc48eeb959141/thumbs/thumb175x175.webp)
To change the oil in your John Deere 14, first ensure the engine is off and cool. Locate the oil drain plug beneath the engine and place a pan underneath. Remove the plug and allow the oil to drain completely. Replace the plug, and refill the engine with the recommended oil type and amount as specified in the manual.
For the John Deere 16, it is recommended to perform regular maintenance checks every 50 hours of operation. This includes checking and changing the oil, inspecting the air filter, and lubricating all moving parts. Annually, you should also replace the spark plug and inspect the fuel system.
If your John Deere 18 won't start, check the battery for charge and connections for corrosion. Ensure that the fuel valve is open and the fuel is fresh. Inspect the spark plug for wear and replace if necessary. Also, verify that the safety switches are functioning properly.
The John Deere 10 from 1988 is designed to run on unleaded gasoline with an octane rating of at least 87. Ensure that the fuel is fresh and free from contaminants.
The air filter on your John Deere 12 should be inspected every 25 hours of operation and replaced every 100 hours or annually, whichever comes first. If operating in dusty conditions, consider inspecting and replacing it more frequently.
If your John Deere 14 overheats, first ensure that the engine is turned off and allowed to cool. Check the coolant level and top it off if necessary. Inspect the radiator and cooling fins for debris and clean them. Also, ensure that the fan belt is intact and properly tensioned.
To adjust the cutting height on your John Deere 16, locate the height adjustment lever or dial, usually near the wheels or deck. Adjust it to the desired position, ensuring that all corners of the deck are level for an even cut.
Remove the mower deck and secure the blades to prevent movement. Use a file or grinder to sharpen the blade edges evenly. Ensure that the blades are balanced to prevent excessive vibration during operation. Reinstall the blades and deck securely.
To replace the spark plug on your John Deere 10, first disconnect the spark plug wire. Use a spark plug wrench to remove the old plug. Install the new plug by hand to avoid cross-threading, then tighten it with the wrench. Reconnect the spark plug wire securely.
If your John Deere 12 is not moving, check the transmission fluid level and top it off if necessary. Inspect the drive belt for wear or damage and replace it if needed. Also, ensure that the gear selector is properly engaged.