I have a YM2210D. The ID plate on the engine identifies it as a 2T90. When I found that parts for the 2T90 engine did not fit my engine I was directed to look for an engine ID tag on the fuel injector pump. The ID tag on the injector pump identified the engine as a 2TR20. Further inquiry revealed that this engine was from a YM2000 and could be used as a direct swap with the 2T90 utilizing the YM2210D air filter and intake.