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    Rare 9.5 x 12.5 OMC Propeller (13 spline ) for a 9.9 / 15

    Yea your right. I was almost going to say an increase or decrease, for just in general talking about a .5" pitch change
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    2-Stroke Intermittent Bogging During Break-In (25:1 oil mix)

    Yes good call, he could have a coil that is breaking down when it gets hot. The engine running down a cylinder and then randomly will kick back in and run on all cylinders.
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    Rare 9.5 x 12.5 OMC Propeller (13 spline ) for a 9.9 / 15

    I guess in case someone wanted another 50rpm or so top end?
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    2-Stroke Intermittent Bogging During Break-In (25:1 oil mix)

    Not sure on the color crayon? But hit it with your IR temp gun in a few spots. I imagine you did the water pump when the engine work was done? All grommets etc in place for water tube?
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    Rare 9.5 x 12.5 OMC Propeller (13 spline ) for a 9.9 / 15

    No one makes an aftermarket?
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    2-Stroke Intermittent Bogging During Break-In (25:1 oil mix)

    A two stroke will run fine if tuned correctly at 25:1 especially at higher RPM, will not foul out or coke up with modern oils. Are you sure your not overheating?
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    Oil on choke?

    Don't worry about it unless you see oil and gas leaking profusely somewhere. Oil keeps things from wearing out! Haha
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    Best solvent to soak parts

    The dollar store, which is called the Dollar Tree is now $1.25.
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    Best solvent to soak parts

    Go to Harbor Freight or buy a cheap one off Amazon.
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    Oil on choke?

    Do you mean the choke butterfly? Oil won't hurt anything on the carburetor. If it looks like excess maybe look around for a reason?
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    Engine Overheated on Evinrude

    It sounds like a few cylinders are scored to me. You can put it back together and see if it runs and just run as is. Or you can rebuild it as you see fit. Old motors didn't have a telltale at least the OMC ones. They sprayed out the exhaust is all you see. But in reality if it was peeing at...
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    Rare 9.5 x 12.5 OMC Propeller (13 spline ) for a 9.9 / 15

    I kind of am confused here. You have the pitch and diameter, that's about all the info on a prop you need. It could be an oddball size for that engine and not many were sold which is why it's rare today.
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    1996 130HP Evinrude V4 looper water pressure gauge install question

    Sounds like you had a defective new part...
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    1968 Evinrude Fisherman 6hp (midsection question)

    I just rebuilt a 1973 25hp long shaft. NO it's not the same engine and lower, but VERY similar. All these engines have literally about the same parts. They have to have all the same stuff. They all have water tubes drive shafts and shift shafts. You can buy it piece meal off eBay useing short...
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    60HP 1989 Johnson outboard low compression

    The head gasket and honing is very very small part of that job. At a minimum you might be able to take the block down hone the cylinder and re ring it. Maybe new pistons but you won't know till it comes apart. Worse is that you need to bore the cylinders and put in oversized pistons and rings. I...
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    60HP 1989 Johnson outboard low compression

    Well just from your description, the scratches are the problem. And with middle being lowest it makes the sense that it was the worst. I could of guessed that one pretty easy.
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    No water flow on my Johnson 9.9 4 stroke electric start for 20-30 minutes

    Starting up easy is a good sign. I'd at a minimum replace the impellor cause it for sure is worn/shot without water/lubrication. If you put it in a trashcan how were you running it wide open to know it lost "ummph"?? In gear it would blow all the water out in a second or two?. You can do a...
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    60HP 1989 Johnson outboard low compression

    I agree but was going to assume if it was more he would have seen it if the head is off or surely would see it when he takes it off and rotates the flywheel to raise and lower each piston and inspect the cylinder walls. And if you, the OP weren't planning on this for sure take it off and drop...
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    1996 130HP Evinrude V4 looper water pressure gauge install question

    115 seems normal at idle with all that water going through the motor. 75f seems awfully cold for it to have been running!! Without it actually running in the water I wouldn't worry too much put it back together with fresh impellor then run it on the water and see what you get. Shoot the heads at...
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    1996 130HP Evinrude V4 looper water pressure gauge install question

    Yep that impellor is shot!
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