Hey All,

My 2006 750 Brute backfires ALOT....I don't lose power but this tends to get annoying over time...any suggestions??

 

running to rich whats the idle at?

 

goto the hardware store and buy 2 #4 washers (very small ) install one under each needle ..

 

sputter and popping through the carb & airbox are common issues with the 05 / 06 - there's a TSB for the carb jets. Both my 05 & 06 bf did it. Dealers would either replace the jets or shim them out... Also, check the buss connection above the gas tank- a lot of people with 05 & 06 have had issues with corrosion and bad connection at that point (I know it sucks getting to the top of the gas tank ) you may have to cut out the buss connector and solder the wires together and shrink wrap...

You can also try going from the 750 stock jet (38) to a 40 jet- which were stock in the bf 650's - part # N424-74C which is the #40 jet.

The main jet controls 3/4 to full throttle-
the needle and needle jet kicks in about 1/8 to 3/4 throttle
and the pilot jet and pilot screw kick in from idle to 1/8 throttle...


also worth mentioning are the valves-
05 & 06 bf 750's were known for tight valve issues- check to see how tight they are.

The 05 & 06 bf 750 motors were pretty buggy- there's a ton of info out there on them because many people experienced the same issues. Try searching google also- Hope that helps a bit