I have an 87 70ETLH 70 hp Yamaha pushing a 20' Skeeter pontoon. Of late, this outboard has a power fall off after 10-15 minuntes of run time only to shut down entirely. I have checked the fuel lines, replaced inline filter cartridge & vent port to the tank, changed the plugs.....it has plenty oil in resevoir. The impeller is not suspect here. It does restart after sitting for 5 minutes or so, but the condition doesn't change & we limp back to the lift. I'm suspecting either fuel or oil pump going bad .
Thoughts here Gents?
Thoughts here Gents?
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