What's this sensor on my flame arrestor

Chris Nowell

Active Member
Nov 28, 2011
1,520
Lake Okanagan, Kelowna B.C.
Boat Info
'05 622 Hardtop w Alaska Bulkhead, 270 Mercury Marine sport inflatable, pulled by a 6.0L Silverado
Engines
4.3 MPI Merc w Alpha I drive, 5 hp 4 stroke Merc aux.
I can't find any reference to this in the manual. I'm not having problems, just learning how everything works on the EFI gas engines. My manual is from '97 but the boat's a '00. I figured the TBI system should be the same though.

DSC00679.jpg
 

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