That prime pump is probably optional. I've flown one Raven I (in addition to Raven IIs) and it had that installed. I was shown how to use it on cold engine, maybe three strokes during the last pre-flight walkaround. Worked like charm, way better than Raven II, but can't compare it to Raven Is without the sysytem. IIRC only twist grip turns was the practice with warm engine.
Last edited by Senior Pilot; 3rd Mar 2024 at 20:31.
Reason: Threads merged