Review on 🏍️ High-Quality BH-Motor Carburetor for Yamaha Raptor 660R YFM660R (2001-2005) by David Merculief

Okay, first off this carburetor is pretty imperfect. Starting with poor quality of machining, there were burrs everywhere in the casting and sharp edges on the machined surfaces, not suitable for connection with rubber bushings. I removed the float bowls to see which injectors they had and noticed metal shavings in the gasket. Then I moved on to the injectors, there were NO sizes marked on any of the injectors in the carburetor. Despite these things, I decided to try this on my 01 Raptor 660. I messed everything up and put the petcock valve on gas. The tank and fuel began to flow from the overflows at the bottom of the carburetor. The floats weren't sealing so I removed them, reopened the float bowls and checked the float levels (13mm from the float bowl seat to the top of the floats), both were slightly misaligned so I adjusted and reassembled. I decided to check the air fuel screws before putting them back in, they were 6 turns! Most things I've read say it goes from 1.5 to 3! So I adjusted them to 2.5 and reinstalled the carburetor, same thing happened with the floats. I ended up getting the bike to neutral but it stalls at 1/4 throttle and stalls. As far as I know it's a problem with the injectors, but since I don't know what type of injectors it is.