Yamaha ef2800i surging
I am getting a little surge from my Yamaha when in eco mode. I remember the Honda eu2000 doing this and it was the carb. The Honda is so popular there is a ton of info, the yam ef2800i doesn't seem so...
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wa8yxm wrote:
Most all gasoline motors are much the same. What worked for the Honda may well work the same for the Yahama as far as the carb.
More specifically all small engine carburetors are almost identical. There is a main jet and an idle jet. Likely the idle jet is clogged/blocked (the orifice is very small; clean with a single bristle from steel wire brush).
wa8yxm wrote:
However as others have suggested. Those small engine carbs are... Well be careful when working on 'em.
Start with an old 9x13 baking pan or buy a disposable aluminum pan and some spray carb cleaner (make sure it has a straw). Do all your disassembly in the pan. Less likely to lose parts.
External adjustment screws should be carefully screwed in until they bottom WHILE COUNTING THE NUMBER OF TURNS. Then you can remove the adjusting screw, spray cleaner in the passage. Reseat the the screw and back out the same number of turns.
Use spray carb cleaner on all passages but DO NOT get carb cleaner on the bowl gasket (#15). If you do it will swell and reassembly will be difficult (the fix is to washer the bowl gasket with soap and water and then let air dry)
#18 is your main jet. #10 is the idle/pilot jet.
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