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Old 04 February 2012, 17:00   #1
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Country: UK - England
Town: Birchington
Boat name: Moneypenny
Make: Avon SR 5.4
Length: 5m +
Engine: Yam 90
Join Date: May 2008
Posts: 182
oil ratio
Hy guys

After a bit of info from anybody who knows early 90's 2 stroke yams. I have just picked up a humber attaque with an 85hp and would just like to know the correct oil ratio mix as I havn't got any paperwork yet.

Any info would be great.

Cheers
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Old 04 February 2012, 17:14   #2
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Country: UK - England
Town: Plymouth
Boat name: 2XS
Make: Halmatic Pacific 24
Length: 7m +
Engine: 135hp Honda X2
Join Date: Jan 2004
Posts: 529
Should be an oil injected engine, is there a big black screw cap, if so fill with oil and all will be sorted.
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Old 04 February 2012, 17:20   #3
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Country: UK - England
Town: Birchington
Boat name: Moneypenny
Make: Avon SR 5.4
Length: 5m +
Engine: Yam 90
Join Date: May 2008
Posts: 182
Quote:
Originally Posted by Ian Austin View Post
Should be an oil injected engine, is there a big black screw cap, if so fill with oil and all will be sorted.
Hi Ian

Sorry, no its not an oil injection so have to mix oil manually!

Cheers Woody
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Old 04 February 2012, 18:31   #4
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Country: Ireland
Town: clifden
Make: Fletcher Bravo Arrow
Length: 5m +
Engine: Yamaha 175
Join Date: Jan 2010
Posts: 43
Have 50 hp yamaha 1995 with oil tank , says 100:1 ratio , took my oil tank off and pre mix 50:1 as it's on my zapcat
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Old 04 February 2012, 20:30   #5
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Country: UK - England
Town: Birchington
Boat name: Moneypenny
Make: Avon SR 5.4
Length: 5m +
Engine: Yam 90
Join Date: May 2008
Posts: 182
Quote:
Originally Posted by Sea Witch View Post
Have 50 hp yamaha 1995 with oil tank , says 100:1 ratio , took my oil tank off and pre mix 50:1 as it's on my zapcat
Thanks for the reply, all my research seems to be coming up with 50:1 so thats good enough for me.

Cheers Woody
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