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Hey all! I just picked up my first atv, a Honda trx420fa. I haven’t rode it a lot yet, or been able to go over it thoroughly, but it is cutting out when it warms up. I’m thinking I need to look at the fuel filter. Any other advise you folks can offer?
 

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I'd look through fault diagnosis in the factory service manual before digging deep, you'll find it available on this forum in PDF format.

Fuel filter replacement is a good shout. I'd also replace the spark plug and spark plug cap.
Start with the easier, simple & cheap possibilities first. Change one item at a time.
Fault diagnosis is a process of elimination, it takes time..

Keep us posted :)
 

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Hey all! I just picked up my first atv, a Honda trx420fa. I haven’t rode it a lot yet, or been able to go over it thoroughly, but it is cutting out when it warms up. I’m thinking I need to look at the fuel filter. Any other advise you folks can offer?
What year is the Rancher? Where are you riding? Welcome to the forums...
 

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I’d make sure the tank vent is open, no crap in the fuel, spark plug isn’t breaking down. Do all the easy stuff first.
 
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