Most gasoline engines nowadays only have a "sock"like filter on the suction side of the pump / sending unit inside the fuel tank, with no scheduled replacement interval. There may be an in-line filter between that and the engine, but if present, it's only meant to be a last-ditch emergency filter in case there is a problem with the in-tank filter or if the fuel pump grenades and sends shrapnel down the fuel line.
Not having a filter seems nuts at first, but I see their logic. I had a van that I put 130k on without a fuel filter change, and for all I know it may have been the original factory filter.
One of the selling points of the PM for me was the access panel for the fuel tank and pump. It shows as least they put some thought into maintenance, rather than just assuming you'd throw it away after 100k. Nice.
I was just being sarcastic with my post. However if it isn't in the manual and it's a service item there will be a bulletin issues for it long before it would require service. Almost every gas station has a quality filter within the pump and with the one onboard plus the plastic tank you may never need to change it out.
I would like to know too! The manual mentions draining water from the filter. Some of you in a very humid climate might nee that or any of us that get some fuel from a station with condensate problems.