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By jhamrick75
If anyone is having issues with the Mikuni VM24SS carb, I thought I would post what issues I had and how I resolved them.
Acquired a 93 Bayou 220 that had sat for over 4 years.
The carb was extremely corroded and pitted and full of leftover fuel.
Cleaned carb and bowl and was able to get the engine to start.
Within 30 seconds exhaust would heat up and start to glow red hot.
Removed carb and recleaned everything, including a second overnight soak.
Needless to say, after removing the carb for the 5th time and my frustration to the limit I
realized that my attention had been to the carb body and not to the bowl.
There is a small brass rod on the bottom of the carb that goes down into the float bowl but is seperated from the main section. I had cleaned that area very well....I had thought.
***The corrosion had sealed off the channel that runs from the main bowl section to the small tube section on the side of the float bowl. No amount of carb cleaner was going to get it to budge. So i took a small nail and started to scrape away the corrosion and was eventually able to dislodge enought of the corrosion that carb cleaner would flow through that channel. ***
I thoroughly cleaned each side of the channel in the float bowl and reinstalled the carb and now the issue of it running lean is gone.
On a second note the fuel mixture screw was a nightmare to remove as the threads had been corroded and wouldnt let the screw come out. I used a little cutting oil and worked the mixture screw in and out until I was able to push past the corroded threads and completely remove the needle. After a couple passes with a tap to clean the threads it is like new again.
Hope this helps if you are having a lean running machine.
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By Eisaks777
hello, i have bpr bombaradier rally 200 2007 which has a lot of gasoline in the oil sump, it is 4 stroke. Has anybody had problem like this and which can be the cause and how to fix it. i rode it today at -2 degrees celcius if it helps.
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By Snick
Bought the project a few weeks ago with weak and intermittent spark. I could smack the CDI box with a screwdriver and it would work fine for a few days. Now, the smack trick is not working and machine is running awful with the weak spark and will most often not fire enough to turn the engine over through combustion (cranks very good). I ordered the GY6 CDI to see if I can get it going again as these CDI boxes are way too expensive even used. battery is fully charged and charging very good.
Wondering if anyone knows how the GY6 (6-pin AC) CDI would wire to this machine. Attached is the electrical diagram. My confusion is with the green and orange wires sharing the 2-pin connector and the Blk/Red wire that runs to the magneto solo. How would I get AC power to the CDI through pin 1 on the GY6 when the CDI has two wires to the pickup-myabe just try one (orange then green) at a time?
^PINOUT:
5 6
2 4
1 3
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By Ejwill
I put a new carb on my trx500fe which I have done before on other models, but this foreman was a real pain, takes forever to get to the carb. Anyway I got the new one installed . I also changed the choke cable while I had it this far. When I turned the gas back gas started running into the air filter box. I did have trouble with the choke cable, it didn’t seem long enough to run where the old one did and the elbow that came with the new carb had more of a 90 on the angle. It didn’t feel like it was binding but I don’t know if the valve was seated on the valve seat. The choke pushed in smooth but who knows what happened in side the valve body. I don’t know if this could be the problem or not I hadn’t run the it just turned the gas back on. Appreciate any help, hint, hint Mech and GW or anybody else. Deer season is over in a little over a week. My power chair won’t make it down those muddy roads. Thanks again.
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