Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

Questions about the Yamaha F150 4 Stroke Outboard

56 views
Skip to first unread message

Joe

unread,
Nov 6, 2004, 8:06:55 AM11/6/04
to
Long time I/O owner here who just bought a new boat which has a 2005
model year Yamaha 4 Stroke, 15OHP Outboard with a few questions.

I am looking into adding gauages that I miss from my I/O boat

1) What is the purpose of this "Water Pressure" gauge that I see on
Yamaha's website?

2) How come I can not find a guage for this outboard that shows me
the engine temperature like my car motor based I/O had?
That sure saved my engine several times when it overheated

3) How come I can not find an Oil Pressure guage either?

4) I am told by the dealer that this engine will sound an alarrm if it
starts to overheat. I guess the alarm is in the engine so is it loud
enough to hear when underway?
This 4 stroke OB is really quiet but at 4500 RPM, it is not exactly
whispering.

Winterizing/Freezing:

Background:

I have a winterizing 'contraption' for my I/O that holds 5 gallons of
anitfreeze. You hook a garden hose to it as well as the ear muffs over
the water inlet on the lower unit. Run the engine till it is warm with
the water running till the thermostat is open and then you twist the
valve on the thing so the engine draws antifreeze from it.
Once about 4 gallons have gone through the engine and you can see the
exhaust water change color to antifreeze color,the block is full of
antifreeze and you turn the boat off for the season.
That is for my car motor based I/O that once done, you are commited
for the season.

I bought this boat with an outbaord (for one reason) because I was
told that there is no need to do the above and if we get one of those
>50 degree day here in maryland that I could use the boat and not have
the hassle of re-winterizing it.

Questions:

A) I was told by the dealer that all I had to do for the winter to be
sure that all the water is out of the Outbaord is to make sure that
the engine is in the down position when the boat is sitting on the
trailer in my back yard. TRUE?

A) Is it true that I do not have to run antifreeze through the motor
on this Outboard to winterize it like I described above for the I/O
boat?

B) When the boat is in the water at my dock (I do not have a boat
lift) , does all the water flow out of the motor when you tilt the
Outboard all the way up such that I do not have to worry about
anything freezing?
I ask this because if we do get a reasonably warm weekend in the
winter (very common in this state) I would like to leave the boat in
the water for the weekend and am worried about freezing since at
night, the air still would be below freezing


Thanks for any answer to my questions.

Joe

tony thomas

unread,
Nov 6, 2004, 12:02:53 PM11/6/04
to
1. Water pressure will tell you if you are picking up water and if the
engine is cooling. Similar to a water temp/head temp guage. Normally found
on outboards.
2. Engine temp guage is usually available but water pressure guage serves
the same purpose for the most part. Plus the engine horn (located at the
drivers station) will go off if engine overheats.
3. Oil pressure guage - not sure if available. Would be a good idea for the
4 stroke but have never seen one.
4. Alarm is at drivers station. You will hear it.

A. Winterize. The outboard does not trap water in the block once the
engine is lowered. Any antifreeze you put in would come right back out. No
need to do it.
B. If you raise the engine - it will trap water in the gearcase. Engine
would drain if you wait for about a minute before you raise it. Leave the
engine down. The river will not freeze and the water in the lower unit will
be at river temp and will not freeze. This is what people around here do
that leave their boat in the water year round. As I said, raising it will
trap water in the gearcase/prop housing and will freeze.

-
Tony
my boats and cars at http://t.thomas.home.mchsi.com


"Joe" <hdti...@yahoo.com> wrote in message
news:uqgpo0t1daq2ip35i...@4ax.com...

Joe

unread,
Nov 7, 2004, 9:18:39 AM11/7/04
to
Thanks a lot for those very concise answers.

Regarding #1 though - that is not very useful as 1) I can already
simply look behind me and see a stream of water coming out from a high
spot on the motor which the manual says is the indicator that the
motor is getting water and 2) I have NO idea when the engine is warmed
up enough to hammer it like I did on my I/O. Just like my car or the
previous I/O , I don't like to accelerate hard until it is warmed up

Joe

On Sat, 06 Nov 2004 17:02:53 GMT, "tony thomas" <t.th...@mchsi.com>
wrote:

Joe

unread,
Nov 7, 2004, 9:23:54 AM11/7/04
to
I forgot to ask. Is there a moderated forum for discussion's like we
just had?
I stick with moderated forums' for my various hobbies and interests.


I stopped using Usenet a long time ago and I see it has not changed.

This group is the typical Usenet group where it is full of completely
OT bullshit.


Thanks,
Joe

On Sat, 06 Nov 2004 17:02:53 GMT, "tony thomas" <t.th...@mchsi.com>
wrote:

>1. Water pressure will tell you if you are picking up water and if the

tony thomas

unread,
Nov 7, 2004, 11:42:13 AM11/7/04
to
The tell tale will let you know it has water when you look around. It won't
tell you how much and when your running and you pick up a piece of trash how
often are you going to be looking around at high speed.
The water pressure will tell you it is getting cooling and the warning horn
will tell you if it is overheating.

As for when the engine warms up - you are right. Most people just wait a
couple of minutes and then let it go.
As I said, you can get a temp guage but most don't bother with it.

As for the modirated group - don't exits. What you have to do is setup your
newsgroup viewer to ignore posts w/ subject containing OT, O.T., Bush,
Kerry, Democrat, Republican, Harry, dildos, politics, political.
That will get rid of most of them. About 200 a day are with this in the
subject.


--

Tony
my boats and cars at http://t.thomas.home.mchsi.com


"Joe" <hdti...@yahoo.com> wrote in message

news:lnbso0l3fo7chjfcu...@4ax.com...

Gould 0738

unread,
Nov 7, 2004, 8:39:45 PM11/7/04
to
>I forgot to ask. Is there a moderated forum for discussion's like we
>just had?
> I stick with moderated forums' for my various hobbies and interests.
>
>
>I stopped using Usenet a long time ago and I see it has not changed.

IOW, "now that I've got the information that I came here for, I'd like to thank
the group by observing you're a bunch of a-holes and your group really sucks
compared to a moderated format."

Go a moderated group, please.

Joe

unread,
Nov 8, 2004, 4:53:39 PM11/8/04
to

Sorry, not taking the bait but nice try anyway:)

Joe

unread,
Nov 8, 2004, 5:17:53 PM11/8/04
to

Tony,
What you say below about the pressure guage does make sense.

A followup question on the winterization.

Doesn't the Outboard have a thermostat in it?

If so, then what prevents the water on the other side of the
thermostat (the engine water jacket) which can't escape when the
thermostats is closed from freezing?

I am thinking again of the I/O comparison where one has to make sure
the engine is wamed up so the thermostat is open before you let the
antifreeze flow into the ear muffs. Other wise, the fresh water on the
other side does not get the antifreeze and it can freeze and pop a
freeze plug.

BTW, the questions about the various guages are because part of the
deal I worked with the dealer for the boat was that I provide any
Yamaha guages that I want and he will install at no extra charge.
Since these guages are not cheap, I wanted to make sure the pressure
guage was a worhtwhile expenditure (and I see now that it is) .

I am ready to order the guages but I sure wish I could find an oil
pressure guage.

Thanks again for your well thought out answers.
Joe


On Sun, 07 Nov 2004 16:42:13 GMT, "tony thomas" <t.th...@mchsi.com>
wrote:

>The tell tale will let you know it has water when you look around. It won't

0 new messages