In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Being new to this, I pushed (as per my oil company recommendation) on the oil tank gauge bobbing thing - it dropped inside.
Is it a DIY to replace this? Could I replace the whole assembly? It seems to be integrated into the vent pipe. There is a third screwhead (besides fuel and vent pipe openings) - could I just unscrew it and install a new one there?
Any pointers appreciated.