Genuine Rieju 2-Stroke Oil Pump 0/005.640.0196 MRT MRX RR RRX SMX RS2 Spike +

Rieju (MRT, MRX, SMX, RR, RRX, RS1, RS2, RS3, SMX, Spike, and Tango 50). before fitting it to the engine. You can do this by carefully turning the pump shaft with a low-speed drill or priming the hoses manually with 2-stroke oil.