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‘00 TRX400EX
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14 Posts
Discussion Starter · #1 ·
I have a 2000 trx400ex; the carb needle seems to need adjusting but, there’s only one position on the needle sooo.. any thoughts/suggestions?
Bogging down, coming downhill and while level but, not going uphill.
Help 😭
please and thank you.
 

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2020 520 rubicon foot shift
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361 Posts
Check the float height, if its too low it will run better when the atv is tilted ahead or back.
You could also have a plugged up fuel petcock, they do funny things like this too. As a quick test you can run it on reserve, if its better it's the petcock.
 

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466 Posts
I have the same problem when I'm running out of gas. Flip it to reserve and all is well.😉
 
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