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By Lance Workman
Guys, had a worn smokey recon 250 to the point it it was fouling plugs. Well pulled the jug looked great and believe my culprit was valve seals. They could not even hold the valve in place. So honed the cylinder for good measure and installed new rings while it was apart. Also lapped valves while it was apart due to little corrosion on the intake valve face, went on and did exhuast while it was apart also. Reinstalled everything, adjusted valves, I cant remember how far out they was but they where out a bit. Well long story short it started up, ran great for about 20 minutes and then randomly died while accelerating. Compression is 60 psi at best.... double checked valve lash and it was way out?? Adjusted it, but you can tell its not right. Still no start, and with rockers arms removed still not compression......? Which making believe ring issue? But why is valve lash all over the place?! Is there an easy way to check cam to crank timing to make sure it hasn't jump time? Thanks!
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By matthew smith
I have a honda recon 250 that i just bought. the compression is around 90 needs to be rebuilt. im getting into rebuilding it took apart the top end no problem except for the cylinder walls. as shown in the pictures. the way the piston sits in the cylinder is if you were sitting on the wheeler the skirt on the piston is left to right. so the wrist pin is front to back. which is where the two marks are in the cylinder. so that means the connecting rod is making the piston slap the cylinder on the wrist pin side which seems like a weird way for the cylinder to be moving. not natural. now the connecting rod has slight play left to right but not up and down. ive talked to a few people they say it might be the roller bearings in the connecting rod where it meets the crankshaft. but the play it has is not that much. im just looking for some more input before i start splitting the case.
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By matbogbry
Looking for a used crankshaft (cheap) for a 2003 Honda Recon or 250EX. Several model years will work. I only need the timing chain sprocket, but I can remove it from the old crank.
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By Tahj
I bought a 2003 Recon from a kid that beat it – all plastics cracked etc, When I replaced the rear brake the inside – axle, rear oil - were clean and in good shape, so I think Honda won the kid vs quad battle.
It shifts a little clunky (I made the adjustment) and after riding for a while I get a hot friction material smell I wonder if he used the wrong oil and if any damage was done.
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Similar Tagged Content
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By matthew smith
I have a honda recon 250 that i just bought. the compression is around 90 needs to be rebuilt. im getting into rebuilding it took apart the top end no problem except for the cylinder walls. as shown in the pictures. the way the piston sits in the cylinder is if you were sitting on the wheeler the skirt on the piston is left to right. so the wrist pin is front to back. which is where the two marks are in the cylinder. so that means the connecting rod is making the piston slap the cylinder on the wrist pin side which seems like a weird way for the cylinder to be moving. not natural. now the connecting rod has slight play left to right but not up and down. ive talked to a few people they say it might be the roller bearings in the connecting rod where it meets the crankshaft. but the play it has is not that much. im just looking for some more input before i start splitting the case.
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By Tahj
I bought a 2003 Recon from a kid that beat it – all plastics cracked etc, When I replaced the rear brake the inside – axle, rear oil - were clean and in good shape, so I think Honda won the kid vs quad battle.
It shifts a little clunky (I made the adjustment) and after riding for a while I get a hot friction material smell I wonder if he used the wrong oil and if any damage was done.
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By Mike Iadonixi
Hi my son's 2005 Honda recon engine is seized any ideas on what or where to get another engine
Thanks to you guys i fixed my other son's four wheeler last month
any help would be greatly appreciated
Thanks
Mike
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By johnnie Cooper
I have a 2005 honda trx 300ex sportrax. I pulled the welded together crap of an exhaust that's on my quad I just picked up and the valve is ghost white. Do you guys no what exactly this means? Or do I just need to pull the head and rebuild it? I'm also looking for plastics and a cheaper stock exhaust if anyone has one. Thanks for your time.
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By oxidized_black
1997-2004 Honda Recon TRX 250 Service Manual
View File 1997-2004 Honda Recon TRX 250 Service and Repair Manual
Submitter oxidized_black Submitted 12/14/2016 Category Honda ATV
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