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Thread: 1989 Yamaha Pro 50
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05-06-2015, 09:55 AM #1
Screaming And Flying!
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1989 Yamaha Pro 50
My dad has a 1989 pro 50 that the oil from the injection tank is draining down when it sits and coming out the lower unit. Is that usually a sign that the pump is going bad or any check valves? I am going to check all the oil lines and make sure none of them are cracked or split but I was not sure if there is a common cause for the tank to drain.
Ralph Musser
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05-06-2015, 02:01 PM #2
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Send a pm to DoktorC I remember him telling me the fix on a 90 yamaha he had that had the same issue (i think?). He loves his yamahas like Bender
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05-06-2015, 03:00 PM #3
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I love Bender like I love yamahas??
It's the seal behind the pump likely.'08 SRV
Yamaha 3.1 Phase III
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05-06-2015, 03:32 PM #4
Screaming And Flying!
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Thanks is the seal part of the pump or where is it located?
Originally Posted by DoktorC
I love Bender like I love yamahas??
It's the seal behind the pump likely.
Ralph Musser
27' Fountain Fever W/ 525SC
22' Rapid Craft W/ Evinrude 300 V8 January 2009 BOAT OF THE MONTH SOLD
24' Triton 240 Gold W/ Mercury 60
14' Royalcraft W/ Evinrude 75 father/daughter project
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05-06-2015, 03:44 PM #5
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Part of the pump yes...the shaft runs thru a seal on the back of the pump.
'08 SRV
Yamaha 3.1 Phase III
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05-06-2015, 03:46 PM #6
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Can you buy the seal separate? I do not see it on the parts list and it looks like the pump is nla also.
Ralph Musser
27' Fountain Fever W/ 525SC
22' Rapid Craft W/ Evinrude 300 V8 January 2009 BOAT OF THE MONTH SOLD
24' Triton 240 Gold W/ Mercury 60
14' Royalcraft W/ Evinrude 75 father/daughter project
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05-06-2015, 03:56 PM #7
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That is a good question I had a pump seal in stock but I don't know the PN off the top of my head. I'll see if I can find something...after I'm done picking up leaves in the yard lol.
'08 SRV
Yamaha 3.1 Phase III
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05-07-2015, 02:23 PM #8
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Did you get a chance to check the part number? Thanks
Ralph Musser
27' Fountain Fever W/ 525SC
22' Rapid Craft W/ Evinrude 300 V8 January 2009 BOAT OF THE MONTH SOLD
24' Triton 240 Gold W/ Mercury 60
14' Royalcraft W/ Evinrude 75 father/daughter project
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