TW 450 dies on steep hill

[Thearm]

I have a 2018 TW450 that runs fine on flat ground but dies out when under load going uphill. Changed the gas filter and spark plug with same results. Letting it set for a few minutes it will run until it hits a incline. Belt is not slipping, but the engine just dies out and doesn't even want to run in neutral. Any ideas as to what I can try is appreciated in advance. Also only run non-ethanol for fuel.

[Jaygyver]

Check your fuel tank for dirt? 

If it only has issues going up hill then there may be something rolling back into the intake on the bottom of the tank. Over time crud can accumulate when fueling. It clogs the tank outlet then when you let it sit it will leak just enough fuel to start again but as soon as you hit the incline it clogs it back again? Basically it just can't fill the float bowl up before it gets clogged again.

Kind of a reach here also, but the float in the carb could be way out of adjustment and only fills the bowl just enough to keep running but when you hit the hill the float shuts off sooner and then starves the motor.

[nods]

possible water in the gas tank!

[Thearm]

update on TW4500 stopping on hills. I ended up buying the factory OEM filter for the pulsating fuel pump after I had bought a aftermarket one. Changed out to the OEM filter and problem seems to be solved.

[Jaygyver]

 Something that easy is great....have fun

Just a thought, could you have put the other fuel filter on backwards, they usually have a flow direction?