Comments on: Boaters Be Warned. Ethanol can and will affect your Yamaha Outboard Motor’s Performance. http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/ Boating Florida Life and Boat Travels Fri, 20 Jan 2012 01:48:47 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: LucyLu http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/#comment-762 LucyLu Thu, 25 Aug 2011 13:17:53 +0000 http://cannons.com/?p=1784#comment-762 Hi Joe, I must disclose that you take your boat to a Five Star Yamaha Dealer for repairs. A certified dealer will have the tools and knowledge to get the job done correctly and efficiently. Okay to address your question - Below are some things that that will need to be done to correct your issues. 1) Make sure that there are no underlining problems with the motor other then the fuel issues such as low compression or high leak down if it is a four stroke. Once you have confirmed the motor is sound then proceed to the fuel issues. 2) Remove all the fuel from the fuel tank. If the tank is a white Plastic tank and exposed to the sun then you should replace it with a red fuel tank, there has been concerns in the industry about the white tanks, sun and ethanol. 3) Pump all the fuel from the hoses on the boat to the motor also check to make sure the fuel lines on the boat are ethanol resistance if not replace them all. You will need to install a fuel water separator in line I suggest the Yamaha 10 micron filter and then check this filter through out your boating season. 4) I am not sure if this motor is a four stroke or two stroke but either way someone will need to go through the carburetors, clean then and replace any and all filters related to the fuel system. If you have a four stroke this maybe more difficult because of the special tools need to setup the carbs after you have removed and clean them. 5) Once the system has been completely gone through fill with gas and treat the fuel with a ethanol fuel additive every time you get gas. </br> From this point on you should never let the boat sit for long periods of time without topping off the tank and treating the fuel. Also a point to know is that ethanol fuel only has a shelf life of around 90 days without treatment and closer to 9 months (give or take) when treated. What happens to the ethanol after 90 days is that the octane levels drop below the recommended rating and becomes a product that can damage your boat motor if run through the engine. </br> If you are going to let a boat sit for long periods you should have the boat flush and fogged before storage and either remove the fuel on top off depending on how long it will be in storage. If you have the option to purchase non-ethanol fuel would recommend that but you should still always treat any fuel with a stabilizer. </br> I hope this helps you and again I highly recommend this be done by a 5-Star Yamaha Dealer. </br> Thanks and if you have a <a href="http://www.facebook.com/CannonsMarina" rel="nofollow">Facebook page</a> think about becoming our friend. (-: Hi Joe,

I must disclose that you take your boat to a Five Star Yamaha Dealer for repairs. A certified dealer will have the tools and knowledge to get the job done correctly and efficiently.

Okay to address your question – Below are some things that that will need to be done to correct your issues.

1) Make sure that there are no underlining problems with the motor other then the fuel issues such as low compression or high leak down if it is a four stroke. Once you have confirmed the motor is sound then proceed to the fuel issues.

2) Remove all the fuel from the fuel tank. If the tank is a white Plastic tank and exposed to the sun then you should replace it with a red fuel tank, there has been concerns in the industry about the white tanks, sun and ethanol.

3) Pump all the fuel from the hoses on the boat to the motor also check to make sure the fuel lines on the boat are ethanol resistance if not replace them all. You will need to install a fuel water separator in line I suggest the Yamaha 10 micron filter and then check this filter through out your boating season.

4) I am not sure if this motor is a four stroke or two stroke but either way someone will need to go through the carburetors, clean then and replace any and all filters related to the fuel system. If you have a four stroke this maybe more difficult because of the special tools need to setup the carbs after you have removed and clean them.

5) Once the system has been completely gone through fill with gas and treat the fuel with a ethanol fuel additive every time you get gas.

From this point on you should never let the boat sit for long periods of time without topping off the tank and treating the fuel. Also a point to know is that ethanol fuel only has a shelf life of around 90 days without treatment and closer to 9 months (give or take) when treated. What happens to the ethanol after 90 days is that the octane levels drop below the recommended rating and becomes a product that can damage your boat motor if run through the engine.

If you are going to let a boat sit for long periods you should have the boat flush and fogged before storage and either remove the fuel on top off depending on how long it will be in storage. If you have the option to purchase non-ethanol fuel would recommend that but you should still always treat any fuel with a stabilizer.

I hope this helps you and again I highly recommend this be done by a 5-Star Yamaha Dealer.

Thanks and if you have a Facebook page think about becoming our friend. (-:

]]> By: Joe Blackwell http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/#comment-761 Joe Blackwell Thu, 25 Aug 2011 03:34:28 +0000 http://cannons.com/?p=1784#comment-761 Fuel with 10% ethanol in plastic tank on Bennington 205L 20' pontoon rigged with Yamaha 50HP Outboard 2002 or 2003 model. This boat sat idle on a Hi-Tide lift for two summers with no stablizer in the fuel. Yamaha used to rev to 5000+ RPM and now will only turn 3600 RPM max. Any help on how to rid contamination that may be in the motors interior? Thanks Fuel with 10% ethanol in plastic tank on Bennington 205L 20′ pontoon rigged with Yamaha 50HP Outboard 2002 or 2003 model. This boat sat idle on a Hi-Tide lift for two summers with no stablizer in the fuel. Yamaha used to rev to 5000+ RPM and now will only turn 3600 RPM max. Any help on how to rid contamination that may be in the motors interior? Thanks

]]> By: Cannons Marina http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/#comment-760 Cannons Marina Thu, 19 Mar 2009 20:43:27 +0000 http://cannons.com/?p=1784#comment-760 Hi Captain Mike, I cannot honestly tell you that you will or will not have problems with your engine. There are several factors like fiberglass tank compatibility. I need to know more information about your boat like the name of the manufacturer and whether it really has fiberglass tanks verses plastic ones. The new plastic tanks can look like fiberglass ones. I strongly suggest that you USE StarTron® Gasoline Additive as directed on the label. This additional step will help in resolving some of the ethanol issues with your Yamaha motor Good Luck and Tight Lines! Hi Captain Mike,
I cannot honestly tell you that you will or will not have problems with your engine. There are several factors like fiberglass tank compatibility. I need to know more information about your boat like the name of the manufacturer and whether it really has fiberglass tanks verses plastic ones. The new plastic tanks can look like fiberglass ones. I strongly suggest that you USE StarTron® Gasoline Additive as directed on the label. This additional step will help in resolving some of the ethanol issues with your Yamaha motor
Good Luck and Tight Lines!

]]> By: mike http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/#comment-759 mike Fri, 13 Mar 2009 19:59:31 +0000 http://cannons.com/?p=1784#comment-759 I have a new flats boat with a new 2007 Yamaha 90 2 stroke. The gas tank is fiberglass. I am a guide and use the boat frequently and service every 100 hrs. The fuel is always new as the boat is used often. Should I expect problems with the tank or motor? I have a new flats boat with a new 2007 Yamaha 90 2 stroke. The gas tank is fiberglass. I am a guide and use the boat frequently and service every 100 hrs. The fuel is always new as the boat is used often. Should I expect problems with the tank or motor?

]]> By: Cannons Marina http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/#comment-758 Cannons Marina Sun, 15 Feb 2009 11:04:49 +0000 http://cannons.com/?p=1784#comment-758 Hi John- My best advice is that you take your engine to a certified Yamaha motor dealer there in Nantucket. There are several potential issues that could be possible and without looking at your engines I would just be guessing. I am uncomfortable giving you anything but solid advice. Best of luck. Hi John-
My best advice is that you take your engine to a certified Yamaha motor dealer there in Nantucket. There are several potential issues that could be possible and without looking at your engines I would just be guessing. I am uncomfortable giving you anything but solid advice.
Best of luck.

]]> By: John Kilmartin http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/#comment-757 John Kilmartin Sun, 08 Feb 2009 15:28:44 +0000 http://cannons.com/?p=1784#comment-757 My 2 year old Yamaha engines as well as other similar Yamaha engines in my marina in Nantucket are having major filter problems, has Yamaha Motors offered any assistance or advice in addressing this problem? My 2 year old Yamaha engines as well as other similar Yamaha engines in my marina in Nantucket are having major filter problems, has Yamaha Motors offered any assistance or advice in addressing this problem?

]]> By: Pallas Knight http://cannons.com/cannons-marina-news/boaters-warned-ethanol-affect-yamaha-outboard-motors-performance/#comment-756 Pallas Knight Mon, 15 Dec 2008 15:45:36 +0000 http://cannons.com/?p=1784#comment-756 Thanks for the update Cannons! We love knowing that you care about boats AND the environment. We also love the post-purchase services you offer. Thanks for the update Cannons! We love knowing that you care about boats AND the environment. We also love the post-purchase services you offer.

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