Christmas is coming, I'll put it to the test while I'm doing nothing, 2 weeks off, can't wait. While we're back on carbies, My latest nightmare the CB250na 1980 model that wont rev, seems it's the float levels. Non adjustable floats, moulded plastic, got to be in awe of the Jap engineers to be so confident to get that right, which they are. Anyway we just flexed the floats plastic to get some adjustment & we gained 16mm in the fuel height. We measured the floats off the mating faces before we put them back together & they were about 2mm different to before. so 2mm on the floats gave us 16mm more fuel in the bowls. Too much of course but surprised to see the large effect. Now she revs but only initially. Carbs back out on the weekend to set right to 15.5mm
G'day all Just spent a very interesting two hours reading this thread! My 3LN1 has exactly the same problem as Greyimport. I get chugging on hills and if I don't rev big on pulling away at lights. I'm also two up with the missus quite often which adds to the revs issue. I've also had the idle issue where the throttle does fk all! So I've ordered both carb kits from litetek and I'm wondering if these following parts can / should be used for the 3LN1 and whether after all you guys hard work...It all came down to the float heights and the O ring? http://www.ebay.com/itm/GENUINE-YAM...pt=UK_Motorcycle_Parts_13&hash=item5416721485 http://www.ebay.com/itm/261789680568?item=261789680568&viewitem=&vxp=mtr http://www.ebay.com/itm/Carburetor-...pcs-/261789682900?hash=item3cf3e18cd4&vxp=mtr Also, is it worth getting a set of iridium plugs? http://www.ebay.com/itm/NGK-4218-Iridium-Spark-Plugs-CR8EIX-4-PCS-NEW-Made-IN-Japan-/151358313324?pt=Motors_Car_Truck_Parts_Accessories&hash=item233da8936c&vxp=mtr Thanks guys!
I suggest reading this as well. Worn needles and emulsion tubes are causing these problems at and just above idle. http://2fiftycc.com/index.php?threads/grasshoppers-fzr-3ln3.2004/page-12 cheers Blair
Thanks Blair, I've now ordered the carb repair and parts kit per that thread. Might as well get it all sorted at once. Is it worth ordering float needles as well? http://www.motorcyclespareswarehouse.com.au/products/kvn-16qs2
The carb repair kits come with everything. You need two of these http://www.motorcyclespareswarehouse.com.au/products/k-1205yku-ky-carb-repair-and-parts-kit and these http://www.motorcyclespareswarehouse.com.au/products/k-1205yks-ky-carb-repair-and-parts-kit for 3LN1 carbs. If your idle screw is fixed in the centre, you have 3LN1 carbs. The float bowl covers will have 2 screws. Here's a pic for reference. Top carbs are off my 3LN6, bottom cover is from 3LN1
Yes 3LN1 carbs I've now ordered the Litetek kits and all four repair and parts kits so should be sweet + have some double ups in the rubber department.
There is a guide here for BDST carbs from a 400. Not identical to the 250 but take lots of photos first before pulling apart. http://litetek.co/Guide_MikuniBDST_Rebuild.html You will also find assembly details under each part on my web page. cheers Blair
I'm looking forward to hearing your results. I've got the same issues. Talking to the experts up here, even the coating on some needles will give problems if work off. I'm embarrased to say I have at least one needle in there that has rust pitting on it from sitting in nwater from the previous owners. I'll be getting those carby kits soon, already got the Litetek kits in her.
Is your Fizzer in original Marlboro livery or did you buy a kit? I think they look great btw Also sent you a pm but not sure if I sent it correctly...
Anythings possible, I'm not real sharp on how these sites work, I thinki I might have replied tp a PM ?? The Marlboro is a Chinese kit. I ended up using the front half & re painted the original rear half. The chinese rear end didnt fit & the bit over the tail light was up side down, not funny at the time. Both the kids ride it & looks the part. Oh, & repainted the tank. She was bought for the kids to learn on along with a NSR 150 & in a year or 2 we'll strip her down & do a full restoration What about yours, where did the colours come from?
No, you posted on his profile, PM;s here are called conversations, click on members name and click on start a conversation
I was led to believe it was a production color but maybe it was a previous owners idea. The color is on the money tho. Bright orange / red and correct logotypes. I'm an ex smoker but I love my Marlboro Fizzer
So back on topic The old Fizzball has been sitting in the shed collecting dust for awhile now so its time to do the things required to get it back up to scratch Oil and filter change ... in with the Delo 400 New racing clutch to coincide with change of oil type Pull apart thermostat to fix the leak Change front sprocket to stock 17 toother A few new parts for the original carbs ..... sadly new needles and tubes arnt in this years budget forecast Even get the main fairings on ..... well a set of 'Virgins' that is ..... thanx to @Linkin for the 99 year lease on his spare set
Not gonna be flying around on a half arsed street fighter anymore? Lol. Looks tops gi. I'm attacking my dust collection on saturday
Hmmm, that's definitely not a virgin going to ride that Virgin..... I'm still a half arsed street fighter, non-virgin until I spray my fairings...