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CC538
Fuel Pump Sight Tube Inspection (Models with Mechanical Fuel Pump)
1 The engine fuel pump (carbureted models) and vapor separator tank (EFI models) are equipped with a sight
tube which gives visible evidence of a ruptured fuel pump diaphragm.
If fuel is visible in tube, fuel pump and/or vapor separator tank should be replaced by your Authorized
MerCruiser Dealer immediately.
CC68
A Models with Seawater Pump Only
B Models with Seawater/Fuel Pump (Combination)