WhiteRook

My Feedback: (38)

did the ealier 2500's have a 60 size carb ?

thanks

Bax

My Feedback: (11)

All of the S-2000 and S-2500 engines used the SuperTigre 60-90 size carburetor. When fueled and propped as recommended, they ran very, very well.

WhiteRook

My Feedback: (38)

Bax , is the fuel tubing test a good way to set the carbs up ? I plan to follow the instructions, but
the fuel tubing test might help.

thanks

Bax

My Feedback: (11)

What do you mean by "fuel tubing test"?

rhl1

I'm guessing the bit about blowing through a piece of fuel line while adjusting the needle valve until the air just starts flowing. It was part of the instruction sheet with my ST3000.

Question: I have 2 ST3000. One runs fine- the other not so good. When the low speed needle is set for a decent idle, the high speed is too lean, no matter how far out you back the high speed needle. If you adjust the high speed OK, low is way too rich, loads up and dies. I am considering an OS carb replacement. The small screw that rides in the curved slot in the throttle barrel is getting worn away, and allows some side to side movement of the barrel. Could this be the problem? rhl1

Bax

My Feedback: (11)

If the carb barrel moves laterally when the engine's running, then you could most certainly find that the idle mixture varies at low RPM. It should not move much at all, except when moving the throttle.

Our way of setting the carburetor is in a thread stuck to the top of this forum.