5-5.5hp air pump. 5 to 5.5 HP motor. Gas motor up to 9hp. Rated pressure: 145 PSI. Pump speed: 655 RPM to 930 RPM. Flywheel: 14-1/2” with dual V-groove (A-1600belt). Proven belt driven design for excellent compression & smooth running. Two mufflers with two high efficiency intake filters. Oil viewing…