I believe that is the 86 model, personally I would buy a carb kit and download the manual and setup the carb 100% to spec from the manual, from there onwards you can troubleshoot should the problem persist, but you will most likely find it is a small simple thing like the needle tip that is damaged or one of the jets still being dirty.
Originally Posted by
BigRedUK
Hello everyone!
I have a 1985 (I think) 250ES Big Red that has been in the family since pretty much new. It's been stored outside a number of years, so last year I took it back to my place and give it a major birthday.
Previously it has only run with half choke, as the carb was in major need of cleaning. I cleaned it in the ultrasonic etc, and when back together it ran perfectly. Had it idling for ages, set the mixture. All perfect. Dropped it back to my parents place, reversing off the trailer it went really rich, like the float was stuck. Since then I have had the carb on and off, and cleaned more times than I care to remember! Last time I even added a blob of JB weld on the float, to adjust the height. Still the same. Start it up. Get a minute of perfect running. Then it will barely run and throws masses of fuel in.
Any ideas? I'm getting desparate!
Thanks in advance.
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