Marine gear lubrication oil

S

Soldier

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Oct 25, 2015
26
Beneteau 343 Ruskin FL
I have a Yanmar 3MY30 engine and the manual does not specify a marine gear lubrication oil for the transmission. Any recommendations. The engine takes 15W-40 and I have that covered.
 
Terry Cox

Terry Cox

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Dec 25, 2000
5,927
Hunter Passage 42 Shelter Bay, WA
Soldier said:
I have a Yanmar 3MY30 engine and the manual does not specify a marine gear lubrication oil for the transmission. Any recommendations. The engine takes 15W-40 and I have that covered.
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Our Yanmar (4JH2-TE) has an identification plate on the bell housing between the transmission and engine that states the type of transmission lubricate. Our service manual and owner's manual conflict as to which. Your engine should have that identification plate. I would follow what it says.
 
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S

Soldier

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Oct 25, 2015
26
Beneteau 343 Ruskin FL
Thank you very much. Found it on the backside of the transmission. SEA 20/30HD.
 
Terry Cox

Terry Cox

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Dec 25, 2000
5,927
Hunter Passage 42 Shelter Bay, WA
As a side note, our transmission dip stick has a ring just above the bottom of the tube, maybe 3/16th inch. That is the full mark and measured with the dip stick cap resting on the transmission housing, not screwed in.
 
S

Soldier

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Oct 25, 2015
26
Beneteau 343 Ruskin FL
Thanks again.....mine has the same and it was driving me nuts to figure how much oil to put in so I just measured with a measuring cup the amount called for in the manual, .6pints or little over a cup. I will look at the stick today and see where the level is at.
 
Terry Cox

Terry Cox

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Dec 25, 2000
5,927
Hunter Passage 42 Shelter Bay, WA
Soldier said:
Thanks again.....mine has the same and it was driving me nuts to figure how much oil to put in so I just measured with a measuring cup the amount called for in the manual, .6pints or little over a cup. I will look at the stick today and see where the level is at.
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Hmm. Seems not enough, IMHO. Then again maybe our Kanzaki is larger and takes more lubricate; almost a full quart of ATF to bring the level to the dip stick mark.
 
S

Soldier

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Oct 25, 2015
26
Beneteau 343 Ruskin FL
Now you got me worried. I will relook the manual today and check the dip stick.
 
Scott B

Scott B

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Sep 20, 2006
2,952
Hunter 33 Georgian Bay, Ontario, Canada
Kanzaki in the 3YM30 takes .3 litres ( or just over .6 pints ) of HD 30W oil. Just did mine over the weekend.
 
C

Capt jgw

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Feb 8, 2014
1,300
Columbia 36 Muskegon
My Hurth takes the same amount, . 6 pint. ATF on that one though. Don't know what they do if over filled, but with that little amount there's not much distance between a little low and empty. So check it often.
 
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Sailm8

Sailm8

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Feb 21, 2008
1,750
Hunter 29.5 Punta Gorda
Any tricks for reading the dip stick? When I pull it out it fit so tight it seems to wipe itself dry. Also the oil is clear in the first place so twice as difficult. I wish they made a dye for guys with bad eyes in tight spaces.
 
Stu Jackson

Stu Jackson

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Feb 26, 2004
23,016
Catalina 34 224 Maple Bay, BC, Canada
Sailm8 said:
Any tricks for reading the dip stick? When I pull it out it fit so tight it seems to wipe itself dry. Also the oil is clear in the first place so twice as difficult. I wish they made a dye for guys with bad eyes in tight spaces.
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Don't wipe it. Just roll it on a paper towel, you'll see it clearly. Good luck.
 
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S

Soldier

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Oct 25, 2015
26
Beneteau 343 Ruskin FL
I even pulled the printout out today while sailing to make sure I read it right...and your right...watch that often.
 
Ken13559

Ken13559

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Oct 29, 2005
2,362
Hunter Marine 326 303 Singapore
Stu thanks for the tip on using paper towel. I've been struggling all these years trying to read the level with that dip stick.
 
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