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Oil/Gas Ratio for 8hp Mariner 2 cycle

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javadano
Deckhand

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USA
15 Posts

Initially Posted - 05/07/2005 : 17:53:07

Anyone have the Oil/Gas Ratio for my 8hp Mariner 2 cycle?
1979/

I spoke to the guy i bought the boat from...genius huh?! Anyway, he said it is 50:1. Then two days ago, he dropped off the owners manual, confirming that it is 50:1. Now if i can just get it to start...she's got spark, getting fuel...just won't turn over. Anyone wanna trade for a four cycle?

Edited by - javadano on 06/01/2005 09:48:24

Buzz Maring
Master Marine Consultant

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USA
1773 Posts

Response Posted - 05/07/2005 : 18:08:57

Hi Dan,

I don't have a Mariner, but I would bet it's 50:1 ... maybe someone with that particular engine will know for sure.

Have you tried to Google it? That might get you the answer.

Good luck!

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Brooke Willson
Admiral

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USA
983 Posts

Response Posted - 05/07/2005 : 21:46:23

My 1985 9.9 Mariner uses 50:1. Mine is actually a Yamaha under the hood -- check the serial number or talk to a good old outboard mechanic to see what yours is.

Brooke

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SailormanCGA72
1st Mate

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77 Posts

Response Posted - 05/08/2005 : 09:48:46

My 1982 Mariner 9.9 uses a 50:1 ratio.

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PZell
Admiral

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USA
548 Posts

Response Posted - 05/08/2005 : 14:58:26

50:1 for 2000 Mariner 8hp 2 stroke

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John Bixby
Navigator

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118 Posts

Response Posted - 05/12/2005 : 00:42:45

MY OLD MARINER USED 50:1.
JOHN ON MS ACHSA

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Champipple
Master Marine Consultant

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USA
6855 Posts

Response Posted - 05/12/2005 : 11:43:26

50:1 is pretty much the standard for two strokes....Unless your still breaking it in, then its a tad richer at about 25 or 30 to 1. Break in on most two strokes is 10 to 15 hours where you shouldn't full throttle for more than a minute or two at a time...

dw

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oldsalt
Admiral

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USA
578 Posts

Response Posted - 05/14/2005 : 15:44:34

The standard mix for 2 cycles is now 50:1 but Johnson/Evinrude toyed around with 100:1 in the 80's. It was a big, big mistake for them and they dropped it.

The older standard mix for all outboards was a 25:1 fuel/oil ratio and since your outboard is a '79, I'd research this very carefully.

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seastream
Navigator

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USA
242 Posts

Response Posted - 05/14/2005 : 23:49:35

I agree with what Oldsalt said. IMHO 50:1 should be the standard for 2 strokes 10 hp and under. Larger engines probably use oil injection. My '87 9.9 'Rude Yachtwin says 100:1, but given it's age, I go 50:1. Hey, too rich, you blow smoke...too lean, you seize.

Start rich, lean out from there.

Bob

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pjeffarch
Navigator

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USA
135 Posts

Response Posted - 05/23/2005 : 23:23:16

How does one measure to get the 50:1 ratio?

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Buzz Maring
Master Marine Consultant

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USA
1773 Posts

Response Posted - 05/23/2005 : 23:56:09

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by pjeffarch
 How does one measure to get the 50:1 ratio?
<hr height="1" noshade id="quote"></blockquote id="quote">
Hi Paul,

Every time I've purchased marine 2-cycle oil the directions for getting the desired mixture are printed in a chart on the container. Simply add the proper number of ounces per gallon to get the ratio you want.

The last 2-cycle oil I bought came in a special container that has a vial built into the side of the container ... it allows you to transfer the proper number of ounces from the main container into the vial, then pour just that measured amount into your gas container/fuel tank.

BTW, welcome to the group!

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ChrisDara
1st Mate

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USA
88 Posts

Response Posted - 06/03/2005 : 13:09:04

1998 9.9 Mariner 50:1

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pjeffarch
Navigator

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USA
135 Posts

Response Posted - 06/05/2005 : 22:49:53

Thanks Buzz. Yes, the container gave the instructions...and whaddya know - first start of the season and it started with the first pull!
Thanks for the welcome; this forum is great.

PJ

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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.