A local customer. This 450 twin had over $800(!) at a local shop that rebuilt the carburetor and did a tune up. It never ran quite right, with a very obvious lean spot at 1/4 throttle. When inspecting the Jet Needle to verify if it had the service bulletin update it was found that the Jet Needle had a washer stacked in there. From here the float valves and height were checked. Confirmed to being using aftermarket K&Ls and a float height of 17mm. With OEM we now have a proper float height of 15.5mm. Compression was initially 155psi, after a full tune up we now have 175psi. Balancer chain adjustment was done as the bike has approx. ~10k miles.
Now runs very well. Nice, crisp throttle response. Pulls well through all the gears. Excellent handling and suspension after front fork fluid swap and regreasing swingarm bushings.
