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Old 18-03-2008, 19:17   #1
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Yanmar 3gm30.

Have a slight but annoying oil drip ,faster as oil gets hotter. Drip coming from bottom of crancase, appears gasket will need replacing.Not worth pulling apart for, any suggestions on some gasket goo or....to stop oil drip as a bandaid solution.Would appreciate it if there was a workshop manual or pics. i could use to pull casing off ,fix and replace for when next i get a needless burst of energy.Thanks and Happy Easter.
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Old 18-03-2008, 21:08   #2
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My Yanmar 3GM30F had an annoying leak that I had repaired in New Zealand. It was from a pinched O-ring on the oil pump. The oil pump had to be removed and a new O-ring installed for the leak to go away. After that, no more leaks in 4000 hours of use.
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Old 18-03-2008, 22:14   #3
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Thanks Dave

Will recheck does appear to be from gasket deteriation on bottom of crancase.Regards Geoff.
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Old 18-03-2008, 23:59   #4
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I've used the 2 part epoxy putty stuff as a temporary fix once or twice and it worked OK. On motors, toilets and the other odd spot. Clean the surface well and it stick like a thingy to a blanket.

I'd only think it was a short term thing though even though the toilet repair is still going strong after 2 years.
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Old 19-03-2008, 10:14   #5
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e-mail me and I can PDF you a few pages from the parts manual inletmarineservices@comcast.net
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