Hi my name isXXXXX will assist you.
Check the fuel tank for debris there is a screen on the end of the pick up tube. Check your idle jet setting should be 1.5 turns CCW from lightly seated. Once you have the initial adjustment warm up engine adjust idle jet with engine in gear not tied up to the dock make small adjustments and wait 10 seconds between adjustments adjust to get the best idle. Be sure the choke closes all the way when starting. If the fuel tank is clean check the high speed jet in the bottom of the carb for trash floating around in the float bowl causing fuel starvation at full throttle.
Could there be a problem in the fuel pump causing the hard start and the high speed problem. What about timing, points ( are ther any)?
I will play with the idle as suggested. Can the idle really effect the high speed loss of power?? It idels very well now.
can you help me ID the high speed jet, carb is pretty burriied.
We have ethenol???
Hard starting is usually lack of fuel that why I ask if the choke is closing all the way?There are no points ignition in this engine. So the engine has spark unless you have a bad ignition component. Which ids unlikely as you say the engine will run full throttle for 30 seconds. The go to 70% which is not an ignition issue. For starting the fuel pump doesn't come into play as the carb is full of fuel in the bowl. So everything points to either the fuel tank or the carburetor. Check the fuel tank as stated in my first post. If the fuel tank is clean that leaves the carburetor as stated in my first post trash in the carb. Process of elimination points to the carburetor. Remove the carb disassemble, clean and install carb kit. But check the fuel tank foe debris first check the fuel primer bulb and the fuel line for loose fittings. If the primer bulb is bad it can cause erratic fuel issues. The high speed jet # XXXXX is in the bottom # XXXXX of the carburetor behind the drain plug.
Thanks for the help. Will drain the bowl in place and pump in more fuel. Will the High speed orifice come out with the plug or is it part of the bowl etc. I am trying not to pull the thing apart. It was in a shop 3 months ago and they did a poor job leaving me to do their work again. I believe its a brand new carb $350 later. we have tried different tanks and hoses but will go thru that drill again testing.
I will accept your answer but is there a way to get back to you again if I fail in the repair?