[dave s]

Hello all mariah owners.Owned mine for a while and did not know about owners club.Really enjoy my boat even if it has a yamaha i/o. Lucky to have a yamaha dealer about a mile away.Would like to get a few more mph.Any suggestions? We clocked at 47 mph using gps.Thanks

[Firestone]

Welcome to the club Dave! Yamaha 305 is a V8 correct? Do you know what is the hp and prop you are running? Post some pictures when you get a chance.

[dave s]

dave s here Anyone who could tell me how to change the foot oil in a yamaha i/o.Have paid to have it done in the past but want to do my own maintenance .Thanks

[CHICKS75]

Gonna have to give a little info to get info..

[Hudson River Steve]

I've never worked on a Yamaha outdrive but I assume they are a pretty close copy to either a Mercruiser or Volvo Penta drive. Tilt the drive all the way up. Remove the lower drain screw located on the starboard side of the drive at the bottom of the bullet then remove the upper vent screw usually located on the right side at the top of the drive. Let the oil drain completely. To refill with drive lube, purchase a quart bottle oil pump available at any marine store. Install the pump in the lower fill screw hole. Tilt the drive so it is fully down. Pump the recommended fluid until it just starts to come out of the upper vent screw hole. Install the upper vent screw with a new gasket then remove the pump and install the lower drain screw with a new gasket.

[dave s]

Thanks a bunch for that info.Will give it a try and let you know how it comes out.Thanks again dave s.

[dave s]

Dave S here Has anyone tried iridium spark plugs in your boat?Put some in my 66 mustang and man what a improvement.