Association Forum - outboard replacement

Assn Members Area · Join

Home.

Association Forum

Ships Store

Cruising

Racing

Technical Tips

Photo Gallery - New

Boat Search - Updated

Manuals & Brochures

Swap Meet

Links

Officer Flag Line & Staff

Bylaws & Constitution

Members Area

Join the Association

Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.

Association Forum

Username:	Password:
Save Password
Forgot your Password?

All Forums

Catalina/Capri 25/250 Sailor's Forums

General Sailing Forum

outboard replacement

New Topic

Topic Locked

Printer Friendly

Author

Topic

Page: of 2

Davy J
Master Marine Consultant

Members Avatar

USA
1511 Posts

Response Posted - 06/26/2012 : 10:01:24

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Every time I have done it, it is a complicated process of holding the ball valves open and overcoming the check valve in the bulb.<hr height="1" noshade id="quote"></blockquote id="quote">
I'm guessing by that comment you are trying to drain the fuel from just the hose. I am draining the fuel from the line but new fuel from the tank is flushing it out. Hope that clarifies my explanation. See previous post.

Edited by - Davy J on 06/26/2012 10:03:01

Sloop Smitten
Master Marine Consultant

Members Avatar

USA
1181 Posts

Response Posted - 06/26/2012 : 11:03:12

Oh, okay. I missed the part where you said you do this prior to using the outboard. I thought you were flushing the hose as part of your shutdown process.

Edited by - on

CarbonSink62
Navigator

Members Avatar

USA
208 Posts

Response Posted - 06/27/2012 : 11:35:04

I see the logic of running the carb dry at the end of the day; I've gummed up my share of motors by not doing this. I've heard, however, that this leaves the cylinders dry at a time when they are quite hot. The concern (I've read, I don't know anything) is that it will be metal on metal during the next startup until the fuel/oil mixture returns.

Am I obsessing again? (You can be honest, I can handle it.)

Edited by - on

dlucier
Master Marine Consultant

Members Avatar

Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 06/27/2012 : 11:47:56

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by CarbonSink62
 I see the logic of running the carb dry at the end of the day; I've gummed up my share of motors by not doing this. I've heard, however, that this leaves the cylinders dry at a time when they are quite hot. The concern (I've read, I don't know anything) is that it will be metal on metal during the next startup until the fuel/oil mixture returns.

Am I obsessing again? (You can be honest, I can handle it.)
<hr height="1" noshade id="quote"></blockquote id="quote">

You are not obsessing. Personally, I don't see the logic of running the carb dry after each use as now instead of fuel in the system, you'd have moist air. Additionally, what's so special about an internal combustion engine in an outboard that requires running the carb dry whereas it's not practiced in powerboats, cars, lawnmowers, weedwackers, snowblowers, edgers, motorcycles, or any other gasoline powered device.

Edited by - on

Davy J
Master Marine Consultant

Members Avatar

USA
1511 Posts

Response Posted - 06/27/2012 : 11:53:20

<blockquote id="quote">quote:<hr height="1" noshade id="quote">The concern (I've read, I don't know anything) is that it will be metal on metal during the next startup until the fuel/oil mixture returns.<hr height="1" noshade id="quote"></blockquote id="quote">
These are 4-stroke motors.
<blockquote id="quote">quote:<hr height="1" noshade id="quote">Additionally, what's so special about an internal combustion engine in an outboard that requires running the carb dry whereas it's not practiced in powerboats, cars, lawnmowers, weedwackers, snowblowers, edgers, motorcycles, or any other gasoline powered device.<hr height="1" noshade id="quote"></blockquote id="quote">
The tiny orifice in the low speed jet.
BTW, the Tohatsu dealer was the one who recommended running the fuel out of the motor after use.

Edited by - on

dlucier
Master Marine Consultant

Members Avatar

Virgin Islands (United Kingdom)
7583 Posts

Response Posted - 06/27/2012 : 12:47:21

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Davy J
 BTW, the Tohatsu dealer was the one who recommended running the fuel out of the motor after use.<hr height="1" noshade id="quote"></blockquote id="quote">

Define "use". If an outboard is used on three different occasions on the same day, do you then run it dry after each use? What about three times in one hour? At the end of each day?

One would think that the manufacturer, who supposedly engineered the outboard and knows what's best, would have detailed instructions in the owner's manual regarding whether to run the carb dry after each use as this appears to be a very major operating point.

Edited by - dlucier on 06/27/2012 12:54:46

dmpilc
Master Marine Consultant

Members Avatar

USA
4593 Posts

Response Posted - 06/27/2012 : 14:30:15

I believe that use here refers to outing. If I were going to sail/motor out for a weekend on the boat, I would wait until I got back to the dock and was putting the boat away for the weekend to run the carb dry.

Edited by - on

Davy J
Master Marine Consultant

Members Avatar

USA
1511 Posts

Response Posted - 06/27/2012 : 14:30:28

Use for me means about once a week. My motor is four years old, the low speed jet needed cleaning twice in 18 months. Since then I run the fuel out and drain the line before use. Haven't needed to clean the carb since. For me, it's not a big deal. Because if I know I won't use the boat until next week, I flush the salt out of the motor anyway.

Edited by - on

awetmore
Master Marine Consultant

Members Avatar

USA
1144 Posts

Response Posted - 06/27/2012 : 14:42:15

So if I'm using my motor multiple times per week (which has been the case so far) I don't need to worry about this?

I do run out the carb on my Honda BF2 dinghy motor, but it gets very occasional use.

Edited by - on

Davy J
Master Marine Consultant

Members Avatar

USA
1511 Posts

Response Posted - 06/27/2012 : 14:50:01

<blockquote id="quote">quote:<hr height="1" noshade id="quote">So if I'm using my motor multiple times per week (which has been the case so far) I don't need to worry about this?<hr height="1" noshade id="quote"></blockquote id="quote">
I wouldn't think you would. Your carb will get fresh gas every few days, I don't think you will have a problem. When we go out on trips, which has been as long as ten days, I don't run the fuel out at all, until the end. But when I come in from a Sunday sail, I might not be sure when the boat will be used again. That's when I flush the motor and run the fuel out.

Edited by - Davy J on 06/27/2012 14:52:33

GaryB
Master Marine Consultant

Members Avatar

USA
4303 Posts

Response Posted - 06/27/2012 : 19:55:37

It's not necessary to run the fuel out of the carb unless the motor is going to sit unused for more than a week and probably would be fine if it sat for a month as long as you're using clean fuel. If you're using it 3 or 4 times a week it is definitely not going to hurt it to sit.

Do you run your car out of fuel every evening? Yes, I know the carb/injectors in a car are different than a small outboard but not that much different. Gum doesn't form in a week.

BTW... my '96 Maxima has been sitting with a 1/2 tank of gas in it since last October. I was really worried about the gas having gone bad and/or having phase separation. I was able to drain a large jar full of fuel from the bottom of the tank and it looked clean. Other than smelling bad it looked fine. I started the car last weekend and let it run for 30 or 40 minutes before I dared drive it (in case there was phase separation I might have missed). Then I drove it for another 30 minutes. The car ran fine and I let it idle for another 3 hours trying to burn up some of the gas (the registration is out of date or I would have kept driving it) and it ran fine.

The point being that from my experience ethanol is more stable than some people say.

Edited by - GaryB on 06/27/2012 19:57:28

Stinkpotter
Master Marine Consultant

Members Avatar

Djibouti
9076 Posts

Response Posted - 06/27/2012 : 20:21:40

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Davy J
 ...BTW, the Tohatsu dealer was the one who recommended running the fuel out of the motor after use.<hr height="1" noshade id="quote"></blockquote id="quote">...and a Honda dealer, supposedly on the advice of Honda, recommended leaving stabilized fuel in the carb, thereby minimizing varnish buildup from the residue that's left when you repeatedly run it dry. My Honda 8 did fine that way.

Edited by - on

OLarryR
Master Marine Consultant

Members Avatar

USA
3442 Posts

Response Posted - 06/27/2012 : 21:05:15

Same page as Gary B and Dave B,

Long time ago, I mentioned I was running the fuel out of my outboard each time I went sailing. Also, I use Stabil or Startron with each fuel tank fill up. The majority indicated that since I use my Honda 9.9 frequently, usually every week, except some weeks in the winter, that there was greater chance of picking up moisture in the fuel line when it was air bound and less chance of water forming with gas in the fuel line. If the outboard was not used for several weeks or more, then probably better to run the outboard dry. So, for years now, I wind up turning my outboard off as I coast backing up into my slip. I'm pretty good at these dockings and the outboard is shut down right away. My Honda was new Jan 2006, has electronically controlled choke (no manual adjustment) and has run flawlessly every time used..............actually starts up better than my Kohler engine in my John Deere Riding mower (though it runs fine as well and gas only run out at end of season).

Edited by - OLarryR on 06/27/2012 21:07:28

andy
Navigator

Members Avatar

USA
228 Posts

Response Posted - 06/29/2012 : 11:05:02

Consider how you use the motor. I just use mine to get in and out of the slip on a lake or putt putt in when the wind dies, no tide or current to deal with. If you need to buck a sea, you need more horsepower which translates to more $$$ and weight. I got rid of a great running 9.9 Mercury bigfoot electric/alternator weighing 135+LBS and replaced it with a 47LB. 5 hp Honda. The Honda pushes the boat 5+KT and is super reliable. Great for our lake but unsuitable for the Puget Sound where tides can run faster than our hull speed. I just couldn't stand having all that weight hanging off the stern. A buddy has a Nissan 5hp on this C25 and has had great luck with it.

Edited by - on

Page: of 2

Topic

New Topic

Topic Locked

Printer Friendly

Jump To:

Association Forum

Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.