skik

where do i find rex's speedshop

has anyone got a cdi box for a 1981 sr250?ive have tried everything but it to fix my problem with bike cutting out intermittently like it losses spark for a short time[flicking kill switch].the bike has been at an auto spark now for a week and he cant find the problem.before you ask ive done all the fuel.vacum,air leak checks and i mean everything.so this is my last thing to try.problem is i dont have much money so no ridiculous prices please.

i would like to try a different coil on my sr250 to check if my coil is faulty.i can buy coils that look the same cheaper for the rd 200/250 or the xs750/850 and others.are they all just the same coil?

the bottom of the float bowl????.thats for draining the float bowl

i take it there is no overflow on an sr250 carb then?????????

where was it leaking from on the carb?as for not holding idle.what makes you think is not getting air?it may be getting to much air.check that the rubber boots engine and airfilter side are air tight and have no cracks or tears in them.if you can keep the engine running,spray carb cleaner around the boots and if the bike revs up you have a leak.

cant hear any sucking.right.carb taken off and cleaned.no sign of water.new plug,not new but filter cleaned with filter cleaner,oiled and put back on,battery charged and ht lead sprayed.took it for a run and only got about 1/2 a mile when it cut out.started straight up again first push of the button.so took it home again.starting to think its electrical because of the backfire last time.could it be it stopped sparking,fuel still going into cylinder,resparks,to much fuel,bang heance backfire right .anyway took off headlight,tank,seat and side panels.started bike and looked at all wires and connections.could'nt see anything wrong.shook and played around with wires but nothing happened.so maybe not electrical.what next????

i don't have an inline filter,must put one on.as for air sucking in,never noticed as i checked to see if i had run out of fuel but will check again and let you know.also will clean out carb.

the last few times i went out for a run on my sr250 it cut out after 15-20 miles.it was like i had flicked the kill switch.it starts up again ok but keeps doing it now and again.today though it started up again but after a big backfire.where do you think i should start looking?

check engine is earthed to frame ok and all earth points

hi all.a back shock snaped on me as i tried to adjust the preload[sr250].anyway im going to get a new set.there are these ones on ebay for sr250 but it says 300mm pin to pin.the ones i have are more like 315mm.can i go ahead and buy them?

if you can get a similar coil off another running bike and try that for spark or yours on another bike.

never did get it fixed.ended up buying a second of ebay £45. the threads that hold the pilot jet in were wrung so could'nt screw it in tight.what seems to be wrong with yours?

hi nathan.just to let you know when looking for engine parts the yamaha sr250 uses the same engine

not sure of model but its a 34mm Mikuni carburetor cv type

i have about 4 diagrams and none show one.what happens to the fuel if say the float hight is too high

is there an overflow on an sr250 carb.if so where is it

i cant seem to find a pilot jet for my sr250 in the uk.is there a certain type and number i can order?

ok try this

not sure what i done for the flywheel but i'll try.here goeshttp://www.nibikers.com/attachment.php?attachmentid=3828&d=1336911215

that manual is for the 125 model.mine is a 1981 sr250.looking at the cam chain tensioner on it,the rod sits out from the locknut but on mine the rod is flush with the locknut thats why i cant screw the wee nut in flush.if i could only get a pic up you would be able to see what im on about

does this look ok

i dont have a full manual just bits of oline stuff.i started the bike this morning and there is no knocking but a whineing noise.im thinking i might have the chain to tight.when you say tighten the wee nut in till its flush with the inner rod do tou mean the bottom of the nut or right in so as you cant get the spanner round it anymore

will do and let you know tomorow how i get on thanks

the nut did'nt seem loose but the wee adjuster was away up.no way did i set it there.when i did set them at the start i checked and rechecked.anyway how come it went noisy all of a sudden,there was only a slight ticking before.awell fingers crossed for tomorow when i start it.