100:1

[alldownwind]

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I have a new Tohatsu 3.5 and that says 25:1 running in and 50:1 once run in - I am now confused!

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Same reason as others have said - it will last longer. Do what Tohatsu tell you!
Mercury dealer told me that when their small 2-strokes changed from 50:1 to 100:1, all that was altered was the manual and the sticker on the motor cover. Engine was exactly the same. All to keep the environmentalists happy, it seems. /forums/images/graemlins/blush.gif

 

[Guest]

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My Suzuki 2.2 manual says run-in at 50:1, then 100:1 except S Africa which is 50:1!!?????????????

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Blended gasoline is the reason.

Also most 100-1 engines are now advised to be run on 50-1 ....... IMHO - he should stay on 50-1 and give his engine the promise of long life.

Another mentioned Scooters ... and Kawasaki mentioned he was dealer on them ... Just a passing comment of what I experienced with the 3 Lambos I had .. and the loads that my mates had ..... If we changed carb up a size ... engine stuttered at low revs ... too much fuel we were told ... if we bored out the engines (common tactic especially on the 200's ... out to 225) the engines used to overheat as we often didn't increase the fuel jet sizes to compensate. That is 2 examples of common faults .... and were confirmed by my pals at Rafferty Newmans, (my last TV200 Series 3 ... commonly referred to as GT200... bored out to 225 actually went on race track for them when I sold) - who were the main guys for Lambo where I was .. and also by Supertune in London. When we bored out - we were advised to over oil the fuel for a while to ease the bedding in etc. Never ever heard that too much oil in the mix caused overheating ... wrong jets etc. yes.

 

[Kawasaki]

Yep remember Raf Newmans, good Geezers.
What can happen when too much oil is stuffed in, it affects the fuel air mix.
Believe Me I,ve mended enough of them in the Past.
Yep understand where You are coming from ref carbs jets and Lambo bore outs.
Did You ever try a Wal Phillips injector thingy?
What a laugh they were!

 

[Guest]

[ QUOTE ]
Yep remember Raf Newmans, good Geezers.
What can happen when too much oil is stuffed in, it affects the fuel air mix.
Believe Me I,ve mended enough of them in the Past.
Yep understand where You are coming from ref carbs jets and Lambo bore outs.
Did You ever try a Wal Phillips injector thingy?
What a laugh they were!

[/ QUOTE ]

2 of us had Wal Phillips Injection ............... didn't take long before we took 'em off ! Went back to over-jetted Amal's ...

Local Police Mechanic nearly blew my mates 225 to bits ... (he looked after Plod M/bikes ...). He reckoned he could make it really go .. so Steve agreed. Guy had it for a few days and brought it back ... Steve then gave it a test drive .. started easy ... pulled away nice - better than it ever did before .. but once it got to about 1/2 revs .. it was gutless ... after a while it started slowing down ... The silly sod had retarded the ignition so far that the engine was just destroying itself ! Off with the cover ... loosen flywheel ... turn it against TDC .. back a few deg's ... Bingo - flying again.

Wal Philips .... forgotten all about that !! Chucked more fuel out the intake than went into engine .... and a right pig to start ! Skinned a few times the old shins kicking that !!

 

[Kawasaki]

Jumped on Me old Bultaco, after Me mate had "Set" the timing.
Stuck it gear and promptly went astern at a great rate of knots!
Don't start Me off on Old bike tales, I'll Clog the Forum up!
Must admit though, messing about with 2 strokes back in the 60's was a lark.
George Todd heads?
4 speed close ratio box on a Bantam.
Cutting edge stuff Man /forums/images/graemlins/grin.gif

 

[bumblefish]

Beats my 1959 Seagull on 10:1!!! /forums/images/graemlins/laugh.gif

 

[Kawasaki]

bloke on the Slipway started his Seagull at 10 to 1 yesterday.












It was half past 4 when the smoke cleared!

 

[pampas]

My little mariner egg wisk said 100% for leisure and 50% for commercial. "Thinks" if its good enough for commerce, its good enough for me, in 10 years had two plugs oil up,sounds as good as the day i bought it. /forums/images/graemlins/grin.gif some of the running has been done on engine lub oil as well.

 

[Lakesailor]

I dread to think what commercial use you could put a 3.5hp motor to.
Do they mean hire boats? Then it would seem like a precaution against the poor little buggers being flogged WOT when half throttle would produce the same speed.
If it's your own motor, and you have a tad of mechanical sympathy, 100:1 will keep it sweet for years and years.

 

[Chris_Robb]

Re: 100:1 and water coolling!

I'll stick to 50:1 - of course only using the best oils...... I think now that the outboards have effectively been banned from sales, the manufacturers no longer have to pretend about the clean up - so the manual perhaps nopw reflects the real engineering.

I dunno - so I'm going to play safe.

What does worry me is that for the 1st 2 weeks I had it the water pissed out of the cooling telltale, now it barely trickes - Extreme (the dealers) told me not to worry, as so long as something was coming out, then it was ok. Hope they are right!!!

 

[Lakesailor]

Re: 100:1 and water coolling!

Pretty poor advice from a dealer. Look at This Thread I've posted a pic a few posts in of a pee stream. There are more pics of cleaning waterways. There is a small pipe from the powerhead to the peehole which may become blocked which is nothing to worry about or it could be a lack of cooling water altogether which is very serious.
Your impellor (behind the prop) will probably need renewing if it hasn't been changed for a season or two.

 

[jerryat]

>> If however you are a cheapskate and use any old cheapo oil, better to stick to 50:1 however expect it to oil up occasionally and have a shorter life.<<

Maybe, but I'd need a lot more proof. My first little Mariner 2 lasted 17 years and was sold still running well. My current Yammy 2 is 8 years old and runs like a sewing machine. ALWAYS used 50:1 (though it's sposed to be 100:1) and common or garden 'outboard 2-stroke' oil. /forums/images/graemlins/smile.gif /forums/images/graemlins/smile.gif

Perfectly ok for me and, I suspect, for many, many others!!! /forums/images/graemlins/smile.gif

 

[Chris_Robb]

Re: 100:1 and water coolling!

The outboard has only done 5 hours, - I have never run it our of water, but I did make an excursion into the lovely - very soft mud at Wicor Marine and the bottom of spring tides, so I was concerend there was a connection. Explained this to dealer as I didn't want to invalidate my warranty. /forums/images/graemlins/laugh.gif

 

[Lakesailor]

Re: 100:1 and water coolling!

I was confusing you with the earlier posting about an "older" motor.
If it's still under warranty you're covered, however daft the dealer is.