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Old 16 December 2014, 16:53   #1
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oil mix ratio yamaha 6hp two stroke

Hallo l have just got myself a yamaha 6hp 2stroke from 2002 can someone here tell me if l need a oil mix ratio from 100/1 or 50/1 and maybe someone has a pdf manuel for my yamy.
Thanks barrie


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Old 16 December 2014, 17:42   #2
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Hi

The mix ratio is 50-1
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Old 17 December 2014, 02:44   #3
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thanks dave have a nice day regards barrie
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Old 17 December 2014, 15:56   #4
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Wrong! It's 1:100 and has been since about 1977. Here's the page from the user manual and a picture of what happens to Pistons when you over oil.Click image for larger version

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ID:	101668Click image for larger version

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Old 17 December 2014, 17:26   #5
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Quote:
Originally Posted by RIB-Teccie View Post
Wrong! It's 1:100 and has been since about 1977. Here's the page from the user manual and a picture of what happens to Pistons when you over oil.Attachment 101668Attachment 101669
Hi

That may be what is said for alot of engines lean is mean.I would still run at 50-1.
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Old 17 December 2014, 17:28   #6
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yep, yammies tend to be 100:1 most others (please correct me if im wrong) are 50:1.
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Old 17 December 2014, 17:45   #7
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Quote:
Originally Posted by RIB-Teccie View Post
Wrong! It's 1:100 and has been since about 1977. Here's the page from the user manual and a picture of what happens to Pistons when you over oil.Attachment 101668Attachment 101669
A 3 cylinder 6hp? ;
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Old 17 December 2014, 17:57   #8
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Hi all


Just did a bit of digging on the interweb.Seems we could all be right,an iboats thread stated that the engines came with a 100-1 sticker on tank but later there was a change to 50-1,get in touch with yam service centre if in doubt,service recalls are sometimes not readily documented especially with older engines and newer.
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Old 17 December 2014, 18:07   #9
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Also stated always use good quality marine 2smoke oil,that goes without saying though
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Old 17 December 2014, 18:35   #10
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Why not go for 75:1 ? :+)
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