Topic: tilly help

[zach87cp]

We have a tilly on our gx390 and this weekend was the first race of the year for it .It was running out of fuel on the top end making it sound just like a rev limiter max recall was 5500 , it did this before but i could always adjust the h side too clear it up but it doesnt make a difference now , I was talking too a couple people that said about using some kind of guage and poping the valve but i dont have no ideas about these tillys.

[George Herrin]

sounds like fuel is running straight thru it. Do you see any coming out filter. Pop off is how you set the needle because there is no float. On gas pop off should be 12lbs +/- 1 and arm height should be .075. new skins and diaphrams  should be done minimum twice a season. To keep them on their A-Game karters put gasket sets in every 4 races but with them a tenth of a tenth matters.

[zach87cp]

I did notice gas would come out of the velocity stack.How do you tell which kind it is ,it was on the mower when we bought it, ill have to order all the stuff i need for it what kind of guage do you need to set the pressure im totally new to these tillys .thanks

[George Herrin]

We sell everything at ECs gauges arm height tool and carb kits. Give us a call.

[zach87cp]

We have the new gaskets coming george .Do you think the pop off pressure needs set.Its a hl 380 tillly.

[George Herrin]

You need to know what it is and more so that it does not leak

[zach87cp]

Hey george i put all new gaskets and diprhams in it ,it looks really clean and its still doing the same thing 5700 was the max recall on it that time but it gets worse as the race goes on it seems like .Im not really sure what to do know i can adjust the carb anywhere and it doesnt seem too make too much of a difference it seems too run rich when its idling the plug was pretty black when i just put a new one in it .

[George Herrin]

Have you checked pop off pressure and arm height. Has it ever run good with this carb.

You need to know what it is and more so that it does not leak

[zach87cp]

were just gonna try too get a mukuni set up something a little bigger and easier too set up.hopefully get a little more power too lol

[George Herrin]

They all hard to setup if you dont know how to do it.