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    2002 optimax 225 water pump

    When I drop the engine into the water it immediately starts pumping water. However, when I get it home and flush it out it will no longer pump water. It has in the past but does not now. The flush gasket (or whatever its called) appears to be in the same condition it has always been in...
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    trailer jacks - which easier to wind?

    Is there some sort of gear reduction difference between a 1000lb jack and a 1500lb jack which would make the 1500lb jack easier to wind given the same amount of tongue weight? Presently I use the least expensive walmart 1000lb jack (no grease fittings) in saltwater. Before long it begins to...
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    225 optimax - slipping prop?

    Six weeks ago I had a cracked hub inside the prop which was replaced by dealer. Prior to this rpm's had topped out consistantly at 5500 with a speed of 48mph. When I got it back rpm top was 5600 with a top speed of 46mph. I didn't think much of it. Meaningless increase in rpms and slightly...
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    Opti 225 missing, going slower but rpm increasing

    Little by little in past month speed has been slowing slightly while rpms have been slightly increasing. Now I seem to hear a slight rattle (as if not getting quite enough oil but there is no other indication of this) or miss (running a little rough). This does seem to smooth out after running...
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    Loss of speed 225 opti/HydrasportDC20

    Boat is dual console hydrasport w/2002 opti 225 A few days ago, while I was sitting on the dock, a friend took my boat for a run. I could see that he got out of the channel and into about a foot of water below which was a couple of feet of mud. He trimmed the engine up and gave it a little...
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    Two stroke not smoking

    Refer to my post "Optimax not running right" for further info. In the process of figuring out a problem with boat I cleaned oil resevoir and engine oil tank on 225 opti and put in new oil. First thing I noticed when running on muffs is that the engine smoked. I had not seen that before and it...
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    225 opti not running right

    When first putting boat in water engine starts and runs out fine. Very shortly it begins to bog down. Put in neutral for a minute or two and it will run fine again. Then it will settle into 30mph range for a few minutes before bogging down to idle again. At that point when it does go again...
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    Optimax spark plug change/Why?

    I may be beating a dead horse with all this discussion about spark plug difference but I'd sure like to understand why the slight discrepancies and why the change from one year to another. What does it all mean? NGK, after conversation with them, revised their specs and sent me this info in an...
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    What are coils and their function?

    What are coils and their function? How does one tell a good coil from a bad? Are there symptoms or is it something that has to be inspected? Thanks
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    Regarding 225 optimax plugs/NGK reply

    There have been, in earlier forums, a question about which plug to use in different year Opti's. I asked the question of the NGK technical plug guy. On the NGK site the 1998-2002 225 opti requires a PZFR5F-11 gapped at .040. The 2006 225 opti (No other year is mentioned.) calls for the IZFR5G...
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    What the Merc dealer says

    I have not received any answers to my last two posts in this forum so am concerned that I have offended you good folks in some way. I feel compelled to remind you that if you share a thought with me that does not mean that it is gone and unavailable to be shared with someone else. I took my...
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    Plugs for 2002 225 optimax

    Searching the forums I find two very definitive statements. One says that NGK IZFR5G gapped at 0.031 is correct. The other says PZFR5F-11 (no timing mentioned) is correct. Which one is correct? Thanks
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    2002 Hydrasports 20DC

    Anyone know how much gas tank holds - or where to find out? Thanks
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    New (used) boat problems

    I bought a boat (2002 20' Hydrasport)which was supposed to be in good working condition across the board. Not the case. Trim tabs switches are reversed. Left is right and up is down. Recently installed gauges said to be working do not. After market guages-tach and fuel guage do not work...
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    2002 225 optimax problems

    I bought a boat, 1992 Hydrasports with 225 opti. It was supposed to be in good operating condition. During trial run engine would not hold power. It kept missing, slowing down, catching again, start to come up strong, miss, slow down, etc. We took it to Merc dealer who ran computer check and...
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    gps antenna tied in with vhf antenna

    Can a gps be tied in to vhf antenna? Thanks
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    Counter rotating prop

    Gentlemen - you too, Steelspike - I am in need of a quick opinion regarding two issues. I have finally put together the rig I want at a price I can afford but must move quickly. The engine is a 225 optimax but lower unit is left hand or counter rotating. I can't imagine that it could make a...
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    Choice to make

    Options keep opening up so I need some more good thinking. Engine to go on a Hydra-sport 20' Dual Console Choice between 2002 225 opti with about 800 hours and good compression or 2002 Opti with Quicksilver factory reman powerhead with 1 year factory warranty from Mercury. $1500 price...
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    How to determine prop size?

    How would I determine the appropriate prop for a 175 Mercury opti on a 20'Hydra- sport dual console? Just checked the Mercury site and narrowed down recommendations - sort of. They gave me choices. Aluminum or stainless. 5 blade, 4 blade, or 3 blade. This part confused me. The alum 3 blade...
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    Brand New? 1999 150 opti

    This is supposed to be a never used in the box 1999 150 optimax. Price is $4500. Was this a problem year for optimax and something to stay away from - or fixable? All opinions welcomed. Thanks
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