Carolyn did a great job of filming while also helping me like a theatre nurse, as we did our first change of the on-engine fine particle fuel filter. Apart from a few drips of diesel from my gloves, the job went about as well as we could have asked for. We found that we needed to bleed air from the new filter. That was a simple job. A 10mm spanner loosened the bleed screw and four or five pumps of the manual priming bulb brought up diesel that cleared the air. We used paper towel to catch the little bit of diesel that came out at the end of the priming process. Then the engine was content; it started and ran beautifully.