Rob, i got one from this web site, Seloc Marine Home Page
My book covers all 2.5-275hp 1-6 cylinder, 2-stroke models. you just need the year of your motor to get the right book.
They are highly recommended books and a lot less than the mercury manual.

This from the johnson/evinrude manual

Recomended fuel mixture
NOTE
OMC issued a bulletin in Sept 88 recommending a 50-1 fuel .oil mix be used in all recreational O/B motors,which were previously recommended for a 100-1 mix,when the motors are only used periodically or if the motor is used at a constant high RPM. a 100-1 mix may be used if the engine is completly run in,and if the motor is used frequently ,But not at constant high RPM.

I thought this interesting

Jim

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The Fishermans Friend is the Flirty Fly,Fickle Food for Fleeting Fish.

When I bought my silver century seagull it was a 10-1 mix this was very expensive to run and a bit smoky.I bought the 25-1 conversion kit.
This consisted of a new main jet. it has run on this full throttle for the last 10 years with no ill effects.

Jim

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The Fishermans Friend is the Flirty Fly,Fickle Food for Fleeting Fish.

Thank you so much for that. It looks just what I'm after and good to know it comes recommended.

Thanks

Rob

Rob another source is Ebay. You will get a manual for your motor in PDF form on a CD for about £5.00 on there.

Incidently Yamaha made the Mariner 4hp 2 strokes for Mariner. Mariner just badged them. My 4hp Yamaha/Mariner runs on 100-1.

If in doubt post the motor number.




David.

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David Norwich Rod Maker. Custom made Fly Rods.

Carbon Fibre Rod Repairs.. Favourite Fly Rods new or old, renovated or repaired.

Rod Building Supplies Fly Rod Blanks, Guides, Threads, Flex Coat.

The David Norwich YouTube Channel

BP

You need to find out if your mariner is a mercury or a yamaha. Then you can fiigure out if it is 100:1 or 50:1.

Dibbler

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Confusious Say: "Upon seeing the shadow of a pigeon, one must resist the urge to look up"!

Hey guys, I was just looking on eBay and I found 4 HP Mariner Outboard listed, selling for dirt cheap.

It's listed by some BlackPennell guy over in the UK. That's an incredible coincidence, I mean it couldn't be the same Black Pennell that started this thread? Right BP? BP? You still there?

Grouse

I'm still here and it ain't me. I've only just got the thing and I'm not about to sell it.

Do you have a link I'm intrigued.

Oh I get it. Joke right!!

OMC - is Johnson/Evinrude.