Yes.You can barely see the mark on the pump casting that the pulley mark lines up with. This one is set on the rich side a little. Most important thing is to open the pump bleed screw to make sure there is no trapped air in the pump and lines and also premix the first tank of fuel 50/1 for break in. Every new one out of the shop had at least 3 gallons of premix.Will smoke a little extra but this allows the pump to be in good operation when you start using straight gas. Again check this pump out thoroughly to make sure it works properly due to where it's located. Mikuni oil pumps have been around since the late 50s,used in Yamaha,Suzuki and Kawasaki machines also and are reliable for the most part. A lot of people blame oil pumps in cases like yours when the po let top ends go and major damage happens. Plus the oem cast pistons aren't as strong or longer lasting as Wiseco pistons are.