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    Compression on 2004 Yamaha f200 V6

    Does anyone know what the Compression on 2004 Yamaha f200 V6 should be. I understand the "within 10% of each other" thing, but what are the absolute numbers on say, a new engine?
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    Syntheic 2-stroke oil vs conventional Any difference?

    Is there any reason I should not use synthetic 2-stroke oil in my 2000 Yamaha 40, or my 2003 Yami 9.9? I've always used conventional but was given a brand new quart of synthetic. What about mixing conventional with synthetic?
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    Service manual for 2004 F115 but engine is 2005 - OK?

    I just bought a boat with a 2005 F115 and just happen to have a service manual for a 2004 F115. Anyone know if there were any major changes between 2004 and 2005 such that the manual would be grossly inappropriate? I'll only be doing basic maintenance, winterizing, maybe a water-pump, etc. not...
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    Robalo R 190 CC 2005 - Problems?

    Considering a R190 CC with Yami F115. Anyone have experience with this model good or bad? Also is the Yami F115 a good motor and is it adequate power for this boat?
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    Sailfish 206 year 2007 Advice Request

    I am looking at a 2007 Sailfish 206 CC and would appreciate any comments from owners of this model or any model close in size and year. Motor is Yami 200 HPDI.
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    HPDI vs 4stroke reliablility/resale

    Considering a boat with a Yami z200HPDI and I'm not familiar with this type of engine. I had a 2003 F225 and currently have a 2000 40 2stroke both if which were / are excellent. It has and will be used in salt water. 3 basic questions: 1) Any known problems inherent to this motor / type of...
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    Lower unit Nylon Gasket vs. Rubber O-ring?

    I just bought a 2001 hp Johnson (J8RVSIE) and was changing the lower unit gear oil and the "gaskets" I took off were Nylon but the "O-Rings" I bought from WM were rubber o-rings. I noticed on the parts diagram on ********** that both are listed as the same diagram number (31). Part number...
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    prop size unknown on 13' Whaler with Yamaha 40

    Boat is a 1992 13 SS with a Yamaha 40 2-stroke (year 2000). Prop is aluminum and is perfectly matched (5500 WOT) but has no markings I can find. Does anyone know either how I figure out what the prop I have is or does anyone know the appropriate size prop for this boat and engine? What prop...
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    Mis-Fires at low RPM / idle - Yamaha 40 2-stroke

    Yamaha C40 TLRY (2000 40 Hp 2-stroke pre mix) misfires at low RPM in or out of gear. Sounds like "run-run-run-run-PUTT-run-run-run-run-PUTT-run-run-run-run-PUTT". The engine has been running just fine for 2 months and ran fine earlier in the day for an hour or so, then this pattern just...
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    Yamaha 40 hp bogs down at times when cruising

    I have a 2000 Yamaha 40 hp 2s which Bogs down (looses power) at times. It starts and runs fine at low speed, and even throttles up nicely and runs great at all RPM's. BUT, at times crusing at 3500-4500 RPM it just starts to slow down all on its own. Not running rough, just losing power as if...
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    Rough ONLY in forward gear Yamaha F225

    My Yamaha F225 (2002) idles fine in Neutral but runs rough when I put in Forward at idle speed. Even a little throttle makes it run perfectly again. ONLY rough in F gear and at idle speed. Is it possible to have the prop nut to tight...just enough friction to strain engine and make it run...
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    Prop Size Mystery

    Merc Marine Vengeance "48 16314 17P". Can anyone tell me the size of this prop for replacement purposes? I assume 17 P is pitch but how about the diameter? I could not find the spec on this prop anywhere.
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    Prop choice?

    There are so many props on the market and they even vary by models from the same mfg for the same size and application. Is there a "best" prop on the market for my Yamaha F225 which is on a Triton 2300 WA? Cost is not a concern if one prop really is better than the rest.
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    Prop and skeg hit rocks Yamaha F225

    2002 Yamaha F225: Drifted into shallows at 1200 RPM and banged up the tips of 2 of the prop blades and chewed up the skeg a bit. Engine never shut down, kept running fine back to the dock. I will replace the prop but the big questions I have are: Is the skeg anything to worry about? Any...
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    Simple one - Nylon washers for lower unit?

    Where do I get the nylon washers for the lower unit on my 1992 E 40.? Must they come from the dealer or can I get them at a hardware store? Evirude dealer sent me rubber o-rings when I ordered (from diagram) what I thought were the nylon washers and they said that's all I needed but I'm not...
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    Diesel to flush lower unit gearcase?

    Any reason I can't or shouldn't use diesel to "rinse out" the lower unit gearcase to clear it of the "milk" before putting new lube in, after changing shaft seals? Thanks, chris
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    Prop Shaft Seals Tools on Evinrude 40 1992

    Have milk in my lower unit. Suspect prop shaft seals. At least that's the easiest place to start it seems. Questions: Do I need the OEM puller and OEM tamping tools that are shown in Seloc to do this job or are there other tricks to the job? Chris
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    Lower unit gaskets for 1992 E40

    Not sure what proper gaskets are or lower unit lube drain and vent screws. Evinrude dealer sent me rubber O-rings (larger on bottom and smaller on top). On the other hand a repair shop gave me hard plastic (looks like polypropylene) washers for both screws. I removed the screws to drain the...
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    Water in lower unit

    1992 Evinrude 40 TLENM. Oil was milky when I drained it. Both screws had gaskets when I checked them. Where is the water getting in from? What are my options? DIY project? What happens if I do nothing?
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