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View Full Version : 84 kxt 250 issue...



4cfed
01-30-2010, 10:30 PM
ok so before i start.. this IS the motor from the 84 i was compalining about a guy i know wanting to put it in a go cart, he sold the motor and everything with a blaster.. well 3 weeks later its done and a friend of mine bought it.. yes a kxt250 in a yamaha blaster..

anyways figured since its a trike motor ill post here..

he went to ride it today with us, and i had it running, and took it for aride to see how the jetting was and it ran fine except for the chain being loose and jumping on the sproket.. so, it sat well irejetted my 250r, we went to ride and he couldnt start it, so i started it for him, running for about 5 seconds than BANG!!! it back fires!

and wont restart, thought maybe i shut the choke off to soon, so i tryed a few time.. about 10 kicks later nothing just endless kicking.... than kick again and BANG!! back fires again, sherd flywheel key is the first thing that came to mind... would that be the issue? or maybe something with the electronics???

dcreel
01-30-2010, 10:34 PM
Check for spark first.. It does sound like the flywheel key sheared.

4cfed
01-30-2010, 11:36 PM
well with it back firing like it did i figure its got spark, its not a little back fire.. id say its about the same as a 22 shot, not jus t alittle pop.. i feel bad for him he has bad luck, he bought a lt230 and it spend 3 weeks at ashop cos we couldnt get it to run, now he got this and didnt even get to ride it.

seems the key sheering is kinda common on the kxt's???