Set it to exact manufacturer specifications.
I would suspect a bad needle valve and seat in the carburetor. The float level can also be set too high. I would replace the needle valve and seat and check float level.I would suspect a bad needle valve and seat in the carburetor. The float level can also be set too high. I would replace the needle valve and seat and check float level.
in the carburetor float bowl, set at 21mm when sitting at closed position. measure from top lip edge of body to top of float. dont forget the needle and seat need to be clean
either your float level is set too high or there is gunk between the float needle & seat inside the carb. open em up, set the float level to the proper specs. pull the needle & seat and clean & polish them. if the needle & seat are too far gone, order new ones and replace.
how to set Yamaha pw80 carburetor
Basic adjustment for small engines carburetors: Close (rotate clockwise) needle valve but do not overtighten since the coated tip may get damaged. Open (rotate counter clockwise) needle valve 1-1/4 to 1-1/2 turns. This should be ok to start the engine. Start the engine and allow to warm up for 5 minutes. Then fine tune the carburetor by SLOWLY closing the needle valve until the egine starts to stall for lack of fuel (mixture too lean). Then SLOWLY open the needle valve until engine starts to stall due to excess fuel (mixture too rich). Set the needle valve midways between the two extremes. If the carburetor has two needle valves, one is adjucted at idle and the other at half throttle.
Basic adjustment for small engines carburetors: Close (rotate clockwise) needle valve but do not overtighten since the coated tip may get damaged. Open (rotate counter clockwise) needle valve 1-1/4 to 1-1/2 turns. This should be ok to start the engine. Start the engine and allow to warm up for 5 minutes. Then fine tune the carburetor by SLOWLY closing the needle valve until the egine starts to stall for lack of fuel (mixture too lean). Then SLOWLY open the needle valve until engine starts to stall due to excess fuel (mixture too rich). Set the needle valve midways between the two extremes. If the carburetor has two needle valves, one is adjucted at idle and the other at half throttle.
On the carb on the back there is a needle and you will set that one to 15/16 and the one on the front of the carb you are going to set that one to 1 15/16 and then move it little at a time till it runs.
If it has a carburetor, 7 psi should work well.
To set the carburetor on a Toyota E engine 1300, you must have the tools to open the bolts. Refer to the pictorial image from the manual to set the carburetor.
Check the speed control and ensure throttle closes fully and adjust as necessary; also check for leaking carburetor mounting gaskets or loose bolts. Turn needle valve clockwise until it just contacts the seat and then turn counterclockwise 1-1/2 turns and start engine. Let it warm up and turn needle valve clockwise until engine slows (lean mixture), then turn counterclockwise past smooth operating level (rich mixture) then set needle valve at midpoint. If problem persists, remove carburetor and disassemble and clean with carburetor cleaner. Then re-do the adjustments described. Good luck.
The carburetor may flood if dirt enters the needle valve and prevents it from closing. A carburetor can also flood if the float inside the fuel bowl is set too high or develops a leak and sinks (this applies to hollow brass or plastic floats primarily).
By carb tune, I assume you want instructions for adjusting a carburetor. Basic adjustment for small engines carburetors: Close (rotate clockwise) needle valve but do not overtighten since the coated tip may get damaged. Open (rotate counter clockwise) needle valve 1-1/4 to 1-1/2 turns. This should be ok to start the engine. Start the engine and allow to warm up for 5 minutes. Then fine tune the carburetor by SLOWLY closing the needle vale until the egine starts to stall for lack of fuel (mixture too lean). Then SLOWLY open the needle valve until engine starts to stall due to excess fuel (mixture too rich). Set the needle valve midways between the two extremes.