Honda TRX420FA5 4X4 FourTrax Rancher 2015 Manual
![Honda TRX420FA5 4X4 FourTrax Rancher 2015 ATV manual cover](/images/fnaECtKlUhIgRXjebnqlQRGv/thumbs/thumb175x175.webp)
It is recommended to use Honda GN4 10W-30 or 10W-40 four-stroke motorcycle oil for optimal performance and protection.
Routine maintenance should be conducted every 600 miles or 100 hours of operation, whichever comes first. This includes oil changes, filter checks, and a general inspection of the ATV.
The recommended tire pressure for the Honda TRX420FA5 is 4 psi for the front tires and 3.6 psi for the rear tires.
Check the battery connections, ensure the engine stop switch is in the run position, verify the fuel level, and inspect the spark plug for wear or damage.
To adjust the brakes, locate the adjuster nuts near the brake lever or pedal and turn them to increase or decrease tension, ensuring that the brakes engage smoothly and effectively.
If the ATV overheats, first stop and turn off the engine. Check the coolant level and inspect for any leaks. Allow the engine to cool down before restarting.
To replace the air filter, remove the seat and the airbox cover. Take out the old filter and replace it with a new one. Ensure the new filter is seated correctly and replace the cover and seat.
The recommended spark plug for the Honda TRX420FA5 is the NGK DPR8EA-9. Ensure it is gapped correctly before installation.
To check the transmission fluid level, place the ATV on a level surface and remove the check bolt located on the transmission case. If fluid does not seep from the check hole, add fluid until it does.
During a pre-ride check, inspect the tires, brakes, lights, oil level, and fuel level. Ensure all controls are functioning properly and check for any visible damage or leaks.