[anyone got cdi box for sr250]

Aye skik" try Rex"s Speedshop, he makes all models CDI. boxes,,

where do i find rex's speedshop

[anyone got cdi box for sr250]

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.

[does it matter what coil i use]

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?

[where's the overflow sr250 carb]

Not familiar skik but cant you see a spigot at the bottom of the float bowl? this is usually the overflow

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

[where's the overflow sr250 carb]

Aye backfire " the float valve will be worn, [ not seating.] no amount of cleaning will sort, Remember to change your engine oil,

will be diluted with fuel,,

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

[where's the overflow sr250 carb]

Excuse me for the late reply, I haven't been online because of my new work and I have been working a lot.

Each time I set the lever in the PRI position, fuel leaked through the carburator.

I removed it for cleaning and checked the float too. Then I reassembled all back.

When I started the motor, I realized that it has a not desired air entry because it can't hold the idle. I must search this failure.

Any suggestion?

Thanks in advance.

Backfire

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.

[sr250 cutting out]

is your tank venting properly skik...can you hear air being sucked in after you open the cap following a ride?

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????

[sr250 cutting out]

is your tank venting properly skik...can you hear air being sucked in after you open the cap following a ride?

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.

[sr250 cutting out]

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?

['73 AT3 - no spark]

check engine is earthed to frame ok and all earth points

[pin to pin shock size]

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?

['73 AT3 - no spark]

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

[where's the overflow sr250 carb]

Did you fix it?

My carb doesn't work properly too.

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?

[1981 Yamaha xt250, anyone had one? have one?]

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

[where's the overflow sr250 carb]

Whats the make and model of the carb? A buddy of mine had his float valve stick open on his drz400 and it filled the crankcase with fuel. Im not sure if this was the product of a clogged relief or if there was no relief like you suspect with yours.

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

[where's the overflow sr250 carb]

If it helps LINKY

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

[where's the overflow sr250 carb]

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

[what to order for sr250 pilot jet]

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

[rattle gor worse]

That link doesn't appear to work

ok try this

[rattle gor worse]

Can you put a link up like you did with the flywheel ?

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

[rattle gor worse]

Have a look at your PM's on the forum.

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

[rattle gor worse]

does this look ok

[rattle gor worse]

In terms of the cam chain. I hope you haven't tightened it up too much. The chain should have some slack in it so it might be worth checking that when you check the alignment marks.

DO you have a manual for the bike?

In terms of the cam chain. I hope you haven't tightened it up too much. The chain should have some slack in it so it might be worth checking that when you check the alignment marks.

DO you have a manual for the bike?

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

[rattle gor worse]

again...check the alignment marks!

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

[rattle gor worse]

i think the thread pitch may be fine and not the usual thread for whatever diameter they are...if they arent stripped why change them, they are probably high tensile too!

was the nut loose? or just the gap had grown?

you have been tinkering with the tensioner and not knowing how its done?

perhaps the chain jumped a cog, check the alignment marks again

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.