Hey guys new to the forum. Just recently picked up a 1990 Yamaha 225 ETLD. Motor runs a little rough cause it been sitting awhile but that is to be expected. My only concern with the motor is that the guy that owned it before me unhooked the precision blend. He disconnected the oil line running from the remote tank to the oil tank on the motor, and looped the oil tank line that connects to the oil pump so that the oil would stay in the tank without setting off the alarm. So my main question is with no oil running to the oil pump does that mean its probly trashed? The guy said he only unhooked it because he didn't want the oil pump to fail and blow the motor up. I really need the precision blend to work because I will be running a kicker motor off the same fuel tank and its a 4 stroke.
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1990 Yamaha 225ETLD oil pump disconnected
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Originally posted by pstephens46 View PostThis is a definite case of needing the correct service manual. No doubt you can get the PB back in service. Seems like a good system. Never understood why people want to bypass and premix...
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any local Yamaha dealer should be able to find the correct service manual part # .
They should be able to get you one, or if they will give you the part # you can do a search on the web for that #.
I thought the oil pump did not have a hose feeding oil to it, it picks up oil from inside the tank and then put it out thru hoses.
but if that is true about the pump having a hose feeding oil and your motor has been running without oil to lubricate the pump and its drive, and the oil pump drive shaft has not been removed, then it is very possible that the oil pump and/or the crankshaft could be damagedLast edited by 99yam40; 07-28-2017, 08:02 AM.
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Originally posted by 99yam40 View Postany local Yamaha dealer should be able to find the correct service manual part # .
They should be able to get you one, or if they will give you the part # you can do a search on the web for that #.
I thought the oil pump did not have a hose feeding oil to it, it picks up oil from inside the tank and then put it out thru hoses.
but if that is true about the pump having a hose feeding oil and your motor has been running without oil to lubricate the pump and its drive, and the oil pump drive shaft has not been removed, then it is very possible that the oil pump and/or the crankshaft could be damaged
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Here is a picture of the oil pump. If you look at the left side of the picture you will see a nipple that doesn't have a line going to it. I assumed this is where the oil line was suppose to go.
IMG_0613.jpg
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Seems you have TWO oil pumps! One mounted on the engine, another attached to the large, remote oil tank.
Does this help?:
Oil tanks, part #9 & 23:
1990 225ETLD Yamaha Outboard OIL TANK Diagram and Parts
Oil injection pump, part #1:
1990 225ETLD Yamaha Outboard OIL PUMP Diagram and Parts
.Last edited by TownsendsFJR1300; 07-28-2017, 04:58 PM.Scott
1997 Angler 204, Center Console powered by a 2006 Yamaha F150TXR
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Originally posted by Phillips_211 View Postwell now you have me 2nd guessing myself. I just figured the oil was pulled from the bottom of the oil tank on the motor straight to the oil pump. if the oil pump doesn't have oil going to it, how would it mess up the crank shaft?
if the oil pump is turning and not pumping oil it will eventually lock up from lack of lube and damage the drive shaft and crank gear if the drive shaft is not removed when eliminating the oil injection.
at least that is what i think i happens.
looking at what Scott posted it seems the hose from the float /level gauge switch unit with a strainer to keep junk out of the oil pump is hooked to the sump drain where you drain the water /crud out of the very bottom of the tank when neededLast edited by 99yam40; 07-28-2017, 07:37 PM.
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