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    6/8/9.9 differences

    Later in the series the block was the same for the 9.9/15, the earlier ones, the 6/8/9.9 shared the same block with the 15 being different.
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    6/8/9.9 differences

    On the early to mid 90's, 6/8/9.9, what are the differences to increase/decrease the horsepower. This is referring to 2 stroke motors only
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    Mercury Mariner 25hp

    Could anyone tell me what the part number is for the extension kit for this motor, it is a short shaft and I would like to convert it to a long shaft. Mariner 25hp, Ser# A136194
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    1986 Mariner 20hp

    I have the option to buy ($300 in nice condtion) a 1986, 20hp, Mariner engine. I am not really very familar with the Mercury/Mariner line, so other than the normal things you check out in a used motor (compression, fire, proper funtioning of gears, etc) is there anything with this series of...
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    Tn-26

    Just picked up something new to tinker with, TN 26, at a good price, $0, so I had to take it. One issue I am having is the springs/wires that hold the retaining ring on the starter pawls. What is on there right now is small wires and they keep coming off so I don't know if they were a homemade...
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    Running without battery

    I tried a search and did not find an answer about my specific engine. My question is, is it safe to run my engine without the battery cables hooked up to a battery. My engine is a Tohatsu 9.9C, it is currently configured as a remote control setup. I am going to redo it to a tiller setup and...
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    Cd-12

    While redoing the lower unit on my CD-12, I noticed the water tube seems to have a built in flow restricter in it. I have not noticed or seen this in any of the other motors I have worked on. It is in the lower end about an inch up from where the tube fits into the impeller housing. I know the...
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    M9.9c

    I was just given this engine and know nothing about it other than the following. Previous owner said the engine ran fine then it just stopped, loosing it's fire. I checked there is no fire to the plugs. I believe at some point the engine was converted over from a tiller model to an electric...
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    1956 ad-10

    I have a chance to pickup a 1956 AD-10 (7.5hp) w/working fuel tank for $50, the motor itself will most likely need the basic's, it sounds and feels like the compression is good and I know for $50 a working fuel tank is pretty much worth that. My question is this, I have a 55 CD-12 that has a...
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    7.5 hp props

    Was wondering if anyone can tell me the answer to the following question. I have a 1957, 7.5hp Johnson that has a two blade prop. I am looking at a 1961, 10hp Johnson as a parts motor (it has a 3 blade prop). I thought that I had read someplace on here that Johnson changed the foot on the late...
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