717 rotax carb removal from engine

[craigdsmith]

I have a 99 sportster with twin 717's. The port engine RPM's will surge between 4-7K at times. I believe the filter on the carb is dirty. When trying to remove the mounting bolts to flame arrestor and other parts, they will not break free. I know all bolts are loctited down. What is the best way to remove them? I am afraid of stripping or breaking bolt/screw heads. I do not want to put much heat on them, especially with a full tank of gas sitting there. Any help would be greatly appreciated.

 

[seadoosnipe]

Aluminum Oxide

I have a 99 sportster with twin 717's. The port engine RPM's will surge between 4-7K at times. I believe the filter on the carb is dirty. When trying to remove the mounting bolts to flame arrestor and other parts, they will not break free. I know all bolts are loctited down. What is the best way to remove them? I am afraid of stripping or breaking bolt/screw heads. I do not want to put much heat on them, especially with a full tank of gas sitting there. Any help would be greatly appreciated.

The age of your boat tells me that you may have another force at work here, aluminum oxide. The carbs to engine are mounted using stainless bolts. The head that they screw into is aluminum. Where the two different metals come together, is where electrolysis will take place. If the boat is primarily used in fresh water and not left in the water for long periods of time, connected to an outside electrical source, then you may be encountering just the loctite. But, with the age of this boat, probably seized from aluminum oxide (aluminum rust). The only thing you can do is to continue your attempt at removing them. Do not try to use the standard allen wrench, you'll strip it. If you don't have them, go to your local auto parts store and buy the socket type allen metric allen heads. This will allow you greater torque and less chances of stripping. If you get it to turn, keep going. If you stop, it'll seize on you again.

I've had them so bad that I had to cut the bolts near the base of the rotary plate. So, be careful and good luck......:cheers:

 

[seadooya]

think its a rectifier issue. Locate it, and disconnect the red wire. The thing with the boats, is that they already come with black fuel lines. Not say'n that the internal filters are not clogged, but it takes A LONG time ,for that to happen. Then again, if sitting up for awhile, then probably the needle/seat assy has some crud built in it, which would effect its performance.

If anything, get some extra feet of fuel line, and re-plum it, so the "good" side is now feeding the "bad" side, and "bad" side, feeding the "good' side