An Aussie Sailor
Join Date: Nov 2008
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Having suffered from a stoppage due to a fuel blockage,I reckon you cannot have too many filters.
My set up is a follows.
Tank to line with fuel bulb for priming to first canister filter "Ryco" brand, larger and cheaper to replace element the the genuine Yanmar article, connector line to Yanmar canister filter, line to engine mechanical pump then the small secondary filter.
The head of fuel in the tank pretty much will refill both the large canister filters but the primer bulb speeds it up.
The manual lever on the engine driven pump then primes up the low pressure side of the system. No problems re-starting, no airlocks on high pressure side.
I also regularly add a water absorbent additive to the fuel and a biocide.