Yo - youse four stroke outboard types...
 

Short Wave Sportfishing wrote:
On Sun, 03 Jun 2007 17:22:26 -0400, HK wrote:

I drain the
oil on the tractor's Kawasaki four stroke every 25 hours, and replace
the oil filter at that time, too.

What size Kawasaki?

I've got the 21 horse Husqvarna with the Briggs Intek V-twin - kind of
a Kawasaki clone. Great lawn tractor.


Two cylinder 18 hp Kawasaki...lovely engine, really.

Yo - youse four stroke outboard types...
 

JimH wrote:
"HK" wrote in message
...
NOYB wrote:
"HK" wrote in message
. ..
lid wrote:
sherwindu wrote:
There is no doubt that the 4 strokes give better fuel economy.
Yep.
However, on the
down side, this is accomplished by designing the carburetor jets to be
very
fine, resulting in periodic blockages of the jets, at least in my
experience with a
Yamaha T9.9.
On my (still new) Honda 20hp, it's not *just* the jets. The entire
design of the carburetor is far more complex than any 2 stroke o/b
I've ever owned. And a rebuild can be more expensive than buying a new
carburetor, which I've done already.

Another problem I'm having is impellers. This engine eats 'em for
breakfast and I don't know why. I've decided to stop flushing with a
garden hose bracket and flush only in a barrell, just to see if it
makes a difference. Otherwise, I may start buying impellers in bulk.

In a nutshell, I'm happy (amazed actually) with the fuel economy. But
this is the highest maintenance outboard I've ever owned (and that
includes quiet a few big ones).

Rick ---- who's had no problem over the years with Mercury -shrug-
whut's up with that?

Short Wave Sportfishing wrote:
What are you guys getting for fuel efficiency on your four strokers?
In Gph if you please.
What about maintenance costs - general operating costs?
It would appear that I might have to switch out of ETEC and go with
#$%^$%%^#$^$%#$%$^&* Yamaha's or Suzuki's to get the boat I want.
Which annoys me no end.
No, I will not go with Mercury under ANY circumstances.
My Yamaha 225 has been a "no maintenance" outboard, aside from
winterizing and dewinterizing. My previous outboard, a Merc 135 OptiMax,
also was pretty much maintenance-free, other than a factory "recall" for
a computer swap-out. But that was done at no cost to me.

I've already done 2 oil changes (engine and lower unit) on my motors in
less than a year. You describe your F225 as "no mainenance". Does that
mean you haven't changed the oil yet?



Fluids, plugs, and filters are attended to during winterizing and
dewinterizing, as it were. My gasoline powered lawn tractor requires more
attention because of the dirt that flies around when I operate it, and the
fact that it is run (properly) at WOT all the time. I drain the oil on the
tractor's Kawasaki four stroke every 25 hours, and replace the oil filter
at that time, too.


I have the same engine in my JD tractor. Just coming up on the 8 hour
break in maintenance.




Change the oil and filter every 25 hours, no matter what the book sez.

Yo - youse four stroke outboard types...
 

Part of the reason is that as the engines get bigger, the orifices and jets also get
bigger, so blockages are less likely. The problem is probably more apparent in
the smaller engines.

Sherwin D.

HK wrote:

lid wrote:
sherwindu wrote:
There is no doubt that the 4 strokes give better fuel economy.

Yep.

However, on the
down side, this is accomplished by designing the carburetor jets to be very
fine, resulting in periodic blockages of the jets, at least in my experience with a
Yamaha T9.9.

On my (still new) Honda 20hp, it's not *just* the jets. The entire
design of the carburetor is far more complex than any 2 stroke o/b
I've ever owned. And a rebuild can be more expensive than buying a new
carburetor, which I've done already.

Another problem I'm having is impellers. This engine eats 'em for
breakfast and I don't know why. I've decided to stop flushing with a
garden hose bracket and flush only in a barrell, just to see if it
makes a difference. Otherwise, I may start buying impellers in bulk.

In a nutshell, I'm happy (amazed actually) with the fuel economy. But
this is the highest maintenance outboard I've ever owned (and that
includes quiet a few big ones).

Rick ---- who's had no problem over the years with Mercury -shrug-
whut's up with that?

Short Wave Sportfishing wrote:
What are you guys getting for fuel efficiency on your four strokers?
In Gph if you please.

What about maintenance costs - general operating costs?

It would appear that I might have to switch out of ETEC and go with
#$%^$%%^#$^$%#$%$^&* Yamaha's or Suzuki's to get the boat I want.
Which annoys me no end.

No, I will not go with Mercury under ANY circumstances.

My Yamaha 225 has been a "no maintenance" outboard, aside from
winterizing and dewinterizing. My previous outboard, a Merc 135 OptiMax,
also was pretty much maintenance-free, other than a factory "recall" for
a computer swap-out. But that was done at no cost to me.

Yo - youse four stroke outboard types...
 

Maybe the really big big engines use fuel injection. I'm not talking about those.

Sherwin D.

wrote:

On Sun, 03 Jun 2007 01:47:38 -0500, sherwindu
wrote:

There is no doubt that the 4 strokes give better fuel economy. However, on the
down side, this is accomplished by designing the carburetor jets to be very
fine,
resulting in periodic blockages of the jets, at least in my experience with a
Yamaha
T9.9.
What's a carburator? Most new outboards use some kind of fuel
injection if they are living in the 21st century, 2 stroke or 4.
If you add the complexities of the oil injection system a new 2 stroke
is certainbly as complicated.

Yo - youse four stroke outboard types...
 

HK wrote:
NOYB wrote:
"HK" wrote in message
. ..
lid wrote:
sherwindu wrote:
There is no doubt that the 4 strokes give better fuel economy.
Yep.
However, on the
down side, this is accomplished by designing the carburetor jets to
be very
fine, resulting in periodic blockages of the jets, at least in my
experience with a
Yamaha T9.9.
On my (still new) Honda 20hp, it's not *just* the jets. The entire
design of the carburetor is far more complex than any 2 stroke o/b
I've ever owned. And a rebuild can be more expensive than buying a new
carburetor, which I've done already.

Another problem I'm having is impellers. This engine eats 'em for
breakfast and I don't know why. I've decided to stop flushing with a
garden hose bracket and flush only in a barrell, just to see if it
makes a difference. Otherwise, I may start buying impellers in bulk.

In a nutshell, I'm happy (amazed actually) with the fuel economy. But
this is the highest maintenance outboard I've ever owned (and that
includes quiet a few big ones).

Rick ---- who's had no problem over the years with Mercury -shrug-
whut's up with that?

Short Wave Sportfishing wrote:
What are you guys getting for fuel efficiency on your four strokers?
In Gph if you please.
What about maintenance costs - general operating costs?
It would appear that I might have to switch out of ETEC and go with
#$%^$%%^#$^$%#$%$^&* Yamaha's or Suzuki's to get the boat I want.
Which annoys me no end.
No, I will not go with Mercury under ANY circumstances.

My Yamaha 225 has been a "no maintenance" outboard, aside from
winterizing and dewinterizing. My previous outboard, a Merc 135
OptiMax, also was pretty much maintenance-free, other than a factory
"recall" for a computer swap-out. But that was done at no cost to me.


I've already done 2 oil changes (engine and lower unit) on my motors
in less than a year. You describe your F225 as "no mainenance". Does
that mean you haven't changed the oil yet?




Fluids, plugs, and filters are attended to during winterizing and
dewinterizing, as it were. My gasoline powered lawn tractor requires
more attention because of the dirt that flies around when I operate it,
and the fact that it is run (properly) at WOT all the time. I drain the
oil on the tractor's Kawasaki four stroke every 25 hours, and replace
the oil filter at that time, too.

I've watched the crankcase oil being drained out of my Yamaha twice.
Still looks like "oil."



Kawasaki? Isn't that a "rice burner"?

Yo - youse four stroke outboard types...
 

On Mon, 04 Jun 2007 06:28:07 -0400, "Reginald P. Smithers III"
wrote:


Kawasaki? Isn't that a "rice burner"?

Yep and they build small engines for a lot of manufacturers now.

I sold my Kubota diesel generator because I don't have a need for that
big a generator anymore and bought a smaller, Kawasaki powered
generator - just enough to keep the freezers, refrig and water
running.

They've really branched out with small engines.

Yo - youse four stroke outboard types...
 

sherwindu wrote:
Part of the reason is that as the engines get bigger, the orifices and jets also get
bigger, so blockages are less likely. The problem is probably more apparent in
the smaller engines.

My little T-8 hasn't given me any carb problems, maybe
because it gets run almost every week.