Searching for replacement motor for HK paramotor

My motor smoked on the third takeoff attempt, but I am cannot find the name/spect of the replacement. . Something llke "3534 1300KV" is insufficient because the HK implementation has a peculiar bolt-on propellor shaft. . HK's product number for the replacement motor would be ideal, but just the correct terminology for that bolt-on shaft would help. . The web page I am composing this on requires a "Topic" but the only one it allows is "Feature Request"... so here it is...