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Brute force 750 carb problems

I have a 2005 brute force 750...i have installed a set of hot cams, as well as a big gun exhaust system, i have re-jetted...but i think i need help in the pilot jet..at 0 - 1/4 throttle it is running very rough, and it will backfire..i was told that if it backfires out of the exhaust it is to rich, so i have been trying to adjust the pilot screws but nothing is happening..should i get a rejet kit..would that give me more options

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SOURCE: kawasaki brute force 750 2005,

Your jetting on the carbs are wrong.

if you want more info on the jetting and how to do it along with some GREAT info, check out highlifter.com/forum

Posted on Dec 18, 2008

  • 4 Answers

SOURCE: kawasaki brute force 750

try to drain carb
water probably got in through air box and carb vent hose
drain and flush carb
replace spark plug
spray contact cleaner in carb throat through air box

Posted on Dec 19, 2008

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I have a 1995 kawasaki ts jet ski it runs but goes really slow will not hit high end. i just got this jet ski it looks like the carb and lower end of motor is new. i did find some water in carb and cleand...


If the carburetor was properly cleaned including the teeter-totter float needle then you may just have accidentally changed the setting screws. Try setting the the high end and low end adjustment screws the standard settings are: Low speed screw: 3/4 turns out (+ or - 1/4 turn for fine tuning) high speed screw: 1 1/4 turns out (+ or - 1/4 turn for fine tuning) If the previous owner rebuilt the whole machine but could not figure out why the boat would not rev out, the next thing to do is remove the water box and and split the halves. http://www.bikebandit.com/houseofmotorcycles/1995-kawasaki-750-ss-jh750a4/o/m3253#sch27834 If a mouse nest has been built in the exhaust system the extra back pressure could be the problem. If the exhaust coupler has broken rubber tubes, has come apart, or has not been put together correctly that might also be the cause of the problem. http://www.bikebandit.com/houseofmotorcycles/1995-kawasaki-750-ss-jh750a4/o/m3253#sch29444

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2 Answers

"06" Brute Force 750 back firing thru the carburators


Sounds like you may have to do a complete carburetor cleaning. Also, after this is done, be sure to put the breather box back and that includes the box cover. That bike is not worth a fiddlers, ..... without that cover put back on it. If the carburetor cleaning is not done properly then you'll still have the problem. Also, be careful when taking the carbs apart, they have different size jets in them and don't move anything in regards to linkages. Those carbs are also syncronized.

If that don't do it, then maybe, you'll need your valve clearances adjusted.

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Kawasaki brute force 750 2005, idles fine, but when you press the throttle it backfires, is this due to a carb problem?


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if you want more info on the jetting and how to do it along with some GREAT info, check out highlifter.com/forum

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