34 replies to this topic

[DeepCountry]

the bike starts sorta hard sometimes and wont run for long.. it will idle forever but when i hop on and ride she dies after a minute.. it just sputters backfires and stalls. if i turn the gas on all the way it runs out the bottom tube on the bowl.

[DeepCountry]

ktm

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[tntrotax]

Plug the bottom tube on the bowl.

[XXROBBOBXX]

instead of buying lots of junk why not save your money and buy one nice thing that actually runs....just saying

[DeepCountry]

wow... i think i remember why i have not logged onto dootalk for so long... thanks for the help guys!!! geeze.
back to dirtrider.



mods please delete this.

[thatguy]

wow... i think i remember why i have not logged onto dootalk for so long... thanks for the help guys!!! geeze.
back to dirtrider.



mods please delete this.

You have a clogged main or pilot jet for the running issue. The fuel pouring out is from an o ring that goes bad on the top portion of the needle & seat. You have to pull the tube out that the n/s rides in, and it is in the end of that tube that holds the o ring. They are about $2.50 for that little part and you need to order it for the Keihin carb from a bike dealer (I got one thru Parts Unlimited or a KTM dealer) - auto parts stores wont carry one that size. The Keihin FCR 41 in the 520 can be a little finicky if it sits for awhile - like over a year - likes to clog up. OR your not getting enuf fuel to the motor because that o ring is failing soo bad.

[SKI_DOO_MAN_484]

You have a clogged main or pilot jet for the running issue. The fuel pouring out is from an o ring that goes bad on the top portion of the needle & seat. You have to pull the tube out that the n/s rides in, and it is in the end of that tube that holds the o ring. They are about $2.50 for that little part and you need to order it for the Keihin carb from a bike dealer (I got one thru Parts Unlimited or a KTM dealer) - auto parts stores wont carry one that size. The Keihin FCR 41 in the 520 can be a little finicky if it sits for awhile - like over a year - likes to clog up. OR your not getting enuf fuel to the motor because that o ring is failing soo bad.

you got it

[XXROBBOBXX]

did i say something wrong???

[DeepCountry]

i cleaned the carb(sucked getting off) now she runs perfect!!! but thanks thatguy! lol

[rampage]

instead of buying lots of junk why not save your money and buy one nice thing that actually runs....just saying

LOL, unless you ride supercross, I'd take a 10 year old KTM over a 2 year old Japanese bike any day. Although I do have a soft spot for the old steel frame honda 250s, KTM makes the best trail bike and even though I'm not a 4 stroke fan they seem to have less problems with their 4 stroke motors than the ricers.

[DeepCountry]

yup! i race harescrables so this bike should suite me well in class open A lol.. cant wait to take it to the local mx track though

[XXROBBOBXX]

LOL, unless you ride supercross, I'd take a 10 year old KTM over a 2 year old Japanese bike any day. Although I do have a soft spot for the old steel frame honda 250s, KTM makes the best trail bike and even though I'm not a 4 stroke fan they seem to have less problems with their 4 stroke motors than the ricers.

i wasnt saying KTMs are junk....but everything he buys has problems and then he comes on here and wants to do a complete rebuild and turbo it....and then ends up just saying F it....and not finish anything..theres usually a reason for why i say things...and most of the time its sarcastic

[DeepCountry]

just chill lol.. when it come to sleds i really dont care. but give me a dirt bike and i wont stop till its done.. this one is done haha

[thatguy]

Not to rain on your parade here - but just throw out some advice.

The 520 is wayy to big to be a contender in hare scrambles unless you truly are a skilled professional. I am not judging your skill level in anyway, but I dont think you will be competing at "A" level - especially here in the midwest and especially in the open class. Your best bet is to compete in your age bracket under a "B" level if you want to be competitive in any way. I would even consider selling the 520 for nice 450 or better yet 250(2 or 4) - you'd be far better off than the powerhouse 520.

I have raced both my 520 and my 250 and find that my 250 2 stroke is far better than my monster 520 - it simply has too much power for that type of racing - unuseable power. Hard to explain - but it will get you in more trouble than it will do good. If you lived in an area where you were blazin across the desert - then YES the 520 would be the bike of choice. But most of the terrain in the midwest hare scrambles is tighter, woodsy, rocky type terrain - all of which the 520 will beat you down. You will be faster on a smaller bike - trust me.

If memory serves me right - you had/have a Yamaha 250 F ??? if so, use that bike

[DeepCountry]

the 250f launched, and is sold. i dont care about winning. i race for fun b class was easy. the 520 is the scariest thing ive ever ridden(and ive had fat girlfriends before) lol ill try A once and see how it goes