Honda TRX420FA5 4X4 FourTrax Rancher 2016 Manual
![Honda TRX420FA5 4X4 FourTrax Rancher 2016 ATV manual cover](/images/aBmrRhBCCCKRbnCNpTJSEXCG/thumbs/thumb175x175.webp)
To perform regular maintenance, check the oil level and quality, clean and oil the air filter, inspect and tighten bolts, check tire pressure, and lubricate moving parts as specified in the owner's manual.
Use SAE 10W-30 or 10W-40 motor oil that is certified as meeting the JASO T903 MA standard for four-stroke engines.
Check the battery connections and charge, inspect the spark plug for wear or fouling, ensure the fuel is fresh, and check the fuel filter for blockages.
Inspect the transmission fluid levels and condition, ensure that the shift linkage is properly adjusted, and check for any obstructions or damage to the transmission components.
Maintain proper tire pressure, perform regular maintenance, use high-quality fuel, and avoid excessive idling and aggressive acceleration.
Common causes include low coolant levels, a clogged radiator, a failed thermostat, or a malfunctioning cooling fan.
Remove the spark plug cap, use a spark plug wrench to remove the old plug, check the gap on the new plug, then install and tighten the new plug before reattaching the cap.
Remove the air filter cover, take out the air filter, clean it with mild soap and water, let it dry completely, and lightly oil it before reinstalling.
Inspect the brake pads for wear and replace them if necessary, check for debris or dirt on the brake components, and ensure that the brake calipers are functioning properly.
Use a tire pressure gauge to check the current pressure. Compare it to the recommended pressure listed in the owner’s manual and use a pump to adjust accordingly.