Question about Light Outboard Motor Boat Bass Fishing Saltwater Base

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Yamaha outboard f15b

Plasticparts fall out of the water take in shaft and causes overheating how to solve

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  • 456 Answers

Take ro a mechanic

Posted on May 13, 2014

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

Fame_Guru
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SOURCE: Yamaha outboard motor manual

You got it :

http://www.yamaha-motor.com/outboard/service/viewmanuals/outboard_manuals.aspx

here !

Posted on Mar 20, 2009

goldbill
  • 184 Answers

SOURCE: yamaha prop shaft

Think you will need to set them side by side and look at the details. I have used similar shafts but make sure the clutch dog engages the gears properly.

Posted on Sep 12, 2012

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I have a 2003 yamaha 40 hp four stroke outboard, this year started up seemed to run great after about 25 minutes i shut it down an hour later checked oil crankcase full of water


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You should change your impeller.
It is located at the top of the gearbox, around the vertical engine shaft.
First, disconnect the gear control. Underneath the steering bracket, you'll see a long nut with a counternut. ( Maybe you'll have to shift FWD or BWD to get better access ). Loosen the counternut 1/4 turn and then turn the long nut up ( 2 open box wrenches 10mm ).
Then remove the 4 bolts holding from lower to upper the gearcase ( just above the anti-cavitation plate )
The gearbox should drop down easily.
Then remove the 4 screws of the waterpump ( top of gearcase, around the long vertical shaft ). Lift the waterpupp housing, you'll get the impeller.
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Oil coming out of were water goes in on leg of yamaha 15 horsepower outboard why is this so ???


If your water pump has failed it could be that your lower shaft gear oil is getting past and running out.
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1 Answer

1988 evinrude outboard


You need to replace the oil seal on the main shaft located below the water pump. Your lower unit gear oil is seeping into the water pump housing. I had the same problem on a Yamaha that I just repaired. Not a hard job. 7_12_2013_1_59_18_pm.png

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1991 yamaha outboard motor leaking water from bottom


Under The Water Pump Is A Seal Plate Which Has Two Shaft Seals And An Outer O Ring Seal This Is Probably Where Your Problem Lies.

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8hp yamaha runs hot


In most outboards, it will flow through the prop itself (through the inner prop). There should be a stream of water coming from somewhere around the back end of the motor itself, called a telltale, which visually shows that the water pump inside the outboard is pumping water up around the motor. If you cannot see this, then there is obviously a problem with the water pump or pump impeller that needs to be corrected to prevent the outboard overheating.

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Hello, I have a Yamaha 9.9 outboard engine, it stars without any problem. When I ref it up just above idle it dies after a few seconds. There is fuel, fuel filter in the line is no blocked.


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