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    250 OX66 idle warmup

    I have started having trouble with my 2001 250 OX66 on warmup idle. The motor when cold used to rev up to around 1400 rpm for a minute or two, then idle back down to 700 rpm. Now when it's started, it doesn't go to high idle to warmup, just to around 600 rpm, no matter what the outside...
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    2001 250 OX66 Diesling on shutdown

    Put the boat in the water today which hasn't been run in about 3 months, and the engine started up fine and ran fine, 5500 rpms pushing a 23 Regulator, but when I turned the key to the off position, instead of immediately shutting down like normal, the engine would slowely spool down and take...
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    2001 250 OX66 Trim Ram Frozen

    Started having trouble trimming my motor up and down today and when I pulled the boat out of the water I noticed that the starboard side trim piston was stuck in the extended position and would not retract. The fluid level is topped off. Is this something that can be repaired or do I need to...
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    250 OX66 Cold Start Idle

    Motor is a 2001 250 OX66 with 500hrs. All maintenance has been performed religiously alternating between 100 and 200hr services in accordance with the owners and service manuals. I'm 50 hrs into the last 200 hr service, which included new VST and new LP diaphram pumps. I put the boat in the...
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    2001 250 OX66 Bypass Valve

    I'm installing a new bypass valve and it's different from my old one. The old one had a cross on each end, the new one has a cross on one end and a half moon shape on the other. My question is, does the cross end go in the grommet in the block or in the spring on the other side. Thanks
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    2001 250 OX66 Drive Shaft Bushing

    I was getting ready to reinstall the lower unit after a water pump change, and noticed the drive shaft bushing was a little loose. By little loose, I mean I can take a screw driver and wiggle it just a little. Should this bushing have a tighter fit? Should I replace it or let it ride. Thanks
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    250 OX Diagnostic Lamp

    Ordered the diagnostic lamp for a 2001 250 OX66 , the lamp I recieved was PN YB-06795. When I checked the service manual, the lamp illustration was different than the one I recieved. The service manual shows a lamp with 3 connections, the one I recieved has a fourth plug which is light grey in...
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    250 ox66 backfire

    have an 01 250 ox66 i recently purchased and put about 35 hours on it. have noticed the last 2 times iv'e pulled the boat and flushed on the muffs that it will backfire 4 or 5 times during a 5 minute flush. when it does this this is a noticable pop and a puff of smoke from the exhaust. i...
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