Just bought a brand new yamaha 8 hp

[bowman316]

I just picked up a brand new yamaha 8 hp motor. It's a long shaft, electric start, and it was only 1790. After a 6% sales tax, it was 1890 or so.
I have always been an evinrude guy, but this seemed like a really good price, so i jumped on it.

Plus it was kinda hard to find an evinrude dealer around here. I had to drive 30 miles to get this motor. West marine only sells mercury's. So you have to find these mom and pop shops to buy motors at.

But I just wanted to know how good of a price this was, and what you guys think about yamaha's. It seems like a really nice motor.

 

[robert graham]

Re: Just bought a brand new yamaha 8 hp

Well, I've had a Yamaha 4HP, 40HP, 115HP and a 90HP, all bulletproof, no problems. The main thing is clean, fresh(stabilized) fuel. Get a fuel/water separating filter at Walmart($27), easy 2 screw installation, save you lots of fuel related problems! You can take real good care of that 8HP and sell it in 5 years for pretty near what you have in it! Good Luck!

 

[bowman316]

Re: Just bought a brand new yamaha 8 hp

i'm going to start running the carbs dry after every use. I have never done that before, but they mechanic at the dealer highly reccomended it. Due to the ethanol and such.
Also I'm going to use the fuel treatment.

I never use boat gas if it is over 2 months old.
I guess i'll use 87 octance, i forgot to ask.

 

[robert graham]

Re: Just bought a brand new yamaha 8 hp

Carbs have little drain screws on each float bowl....easy to do and drains all fuel out, better than trying to run carbs dry, which actually leaves some fuel in the bottom of float bowl. If you use the stabilizer all the time than maybe only drain carbs a couple of times a year, just to remove any water or debris that gets past the filters. 87 octane is fine! Good luck with your new motor!

 

[bowman316]

Re: Just bought a brand new yamaha 8 hp

some things will never be settled...
How was the earth made?

Where did life come from?

And 87 octane or 93 in boat motors?

lol

 

[Cannondale]

Re: Just bought a brand new yamaha 8 hp

i'm going to start running the carbs dry after every use. I have never done that before, but they mechanic at the dealer highly reccomended it. Due to the ethanol and such.

I'm curious why you would do that despite what the "mechanic" said.....it's a new motor and was designed with ethanol-laced gas in mind. So, what possible problems could the motor have with ethanol? If anything, it'd be your gas tank that would pose a problem if it's old. Other than that, I'd forget trying to drain the carb bowls after every use....the motor is made to use ethanol.

 

[DJ]

Re: Just bought a brand new yamaha 8 hp

some things will never be settled...
And 87 octane or 93 in boat motors?

lol

That's because people are allergic to owners manuals. Plus, they would rather believe hearsay than someone that designed, built and warrants it.

 

[robert graham]

Re: Just bought a brand new yamaha 8 hp

There's only a few places in a fuel system where water, trash, varnish, whatever can form, in the tank, lines, pumps, filters, and the carbs. The carbs/jets are where the debris really causes the problems, so draining them occasionally makes good sense. Good Luck!

 

[bowman316]

Re: Just bought a brand new yamaha 8 hp

I'm curious why you would do that despite what the "mechanic" said.....it's a new motor and was designed with ethanol-laced gas in mind. So, what possible problems could the motor have with ethanol? If anything, it'd be your gas tank that would pose a problem if it's old. Other than that, I'd forget trying to drain the carb bowls after every use....the motor is made to use ethanol.

The mechanic is the one who told me to run it dry. I am doing what he says.

And another mechanic told me that the motor companies have not solved the ethanol problem yet.
they are not the ones who decided to put ethanol in the gas, and they do not know how to run a boat motor on ethanol.
It was not their idea to use ethanol.

 

[Cannondale]

Re: Just bought a brand new yamaha 8 hp

The mechanic is the one who told me to run it dry. I am doing what he says.

And another mechanic told me that the motor companies have not solved the ethanol problem yet.
they are not the ones who decided to put ethanol in the gas, and they do not know how to run a boat motor on ethanol.
It was not their idea to use ethanol.

Then you need new mechanics.

Think about it logically. Do you honestly think the engineers for the marine divisions from Honda, Yamaha, Mercury, et al, are so inferior to their counterparts in the other motor powered divisions (Honda cars, motorcycles, etc.; Yamaha motorcycles and car engines for example)? Don't you honestly think the motorcycle/car engineers at Yamaha, who seemingly have "solved the ethanol problem" with their respective car and motorcycle engines, would share their knowledge with the marine division engineers?

And the recommendation to drain the carb bowls is a solution only for the problem of crap in your gas tank and improper fuel lines. I think even Yamaha would tell you their outboard engines produced in the last decade or so are immune themselves to any ethanol related problems......Yamaha surely is using proper gaskets and seals that are ethanol resistant. It'd be ludicrous to think a major engine designer/producer like Yamaha is still mystified by ethanol use in their outboards. Your mechanics are living in the 1980's, unfortunately, and are still spreading the FUD that still circulates through the marine industry.

Modern outboards should have absolutely no issues using ethanol. They were designed to use it, pure and simple. To think anything else is just feeding into the ethanol lunacy that exists, unfortunately.

Seriously, why would you purchase an outboard motor from a company with such incompetent engineers? If they are unable to solve the ethanol problem after having ethanol in the gas for decades, why would you trust them to design a motor that would work at all? Surely the motor's design has other defects/problems......poor head gasket design, poor carb design, poor cooling design.

And I'm sure your owner's manual also states your motor won't tolerate ethanol, doesn't it? I mean, since Yamaha's engineers are so incompetent and ignorant, Yamaha must state that their motors are at peril using ethanol and therefore are prohibited from using fuel containing it, right?

 

[bowman316]

Re: Just bought a brand new yamaha 8 hp

i'm not saying the yamha engineers are incompetent.
But maybe there is no possible way to run ethonal thru a boat motor.
Maybe even einstein could not rig up a way to run ethonal thru a marine engine.

Because ethonal based gas was designed to be run the car engines. With fuel injectors.
The guys who thought up putting ethonal in the gas were not considering how to run marine engines on them.

I thought they just started using ethonal a few years ago?

 

[Cannondale]

Re: Just bought a brand new yamaha 8 hp

i'm not saying the yamha engineers are incompetent.
But maybe there is no possible way to run ethonal thru a boat motor.
Maybe even einstein could not rig up a way to run ethonal thru a marine engine.

Because ethonal based gas was designed to be run the car engines. With fuel injectors.
The guys who thought up putting ethonal in the gas were not considering how to run marine engines on them.

I thought they just started using ethonal a few years ago?

You're really not serious, right?

Ethanol has been used as an oxygenator in gasoline for over 25 years. My 1985 Chrysler LeBaron Convertible's owner's manual specifically mentions it is permissable to use up to 10% ethanol in the vehicle....so were Chrysler engineers fortune tellers? No....ethanol was being used but the pumps weren't required to be labeled as they are today. If you live anywhere near a big city, such as LA, Atlanta, DC area, NYC, Chicago, among other places, you've been using ethanol in the winter blends of gas for decades.

And there's no special sauce or big mysterious engineering feat to using ethanol blended gas in marine engines. They are, simply put, just an engine, just like car engines. True, some are two strokes, but that doesn't change the fact they take in air, mix it with a gas vapor, burn it and exhaust it. The internals of a marine engine use metal rings on the pistons, metal pistons, metal cylinders and block, metal head.....just like a car engine.

The problem with ethanol is it burns leaner so you have to enrichen the mixture a slight amount to compensate.....but that's been done, again, for decades. Carburetors have no problem passing ethanol through them provided the gaskets are ethanol resistant, again, something that's been done for decades. But the draining of the carb's bowl(s) has nothing to do with protecting your motor from ethanol damage and everything to do with preventing the crud from settling out in the bowl from non-ethanol resistant gas lines leading up to the motor and/or a filthy tank that's being cleaned by the ethanol----and these problems are owner induced for not keeping up with proper maintenance...not the motor's or ethanol's fault. But some around want to blame the gas instead for their failing to do proper maintenance. Why replace gas lines when that costs money and when it's easier to blame ethanol for their lack of maintenance.

All the horror stories are just that....FUD. (FUD=Fear, Uncertainty, Doubt.) If your motor's new, it can run ethanol blended gas. Read the owner's manual. It'll most assuredly say it can run up to 10% ethanol blended gas. And if your Yamaha is so poorly built, according to your "mechanic", go buy an OMC or Mercury or Honda...those brands have no problem using ethanol.