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I'll post some snappies. I'm pretty sure the coil is a cylinder. I'm shit scared to mess with the timing. Never adjusted points before and I dont want to try it. I still havent gotten the carb back off for another cleaning so I dont have any kind of a progress report. I'll think about timing/coil etc after I clean it again.
would the exaust being plugged cause more of a problem at higher RPM than at lower (idle). When it was running, it was idling very nicely. I've tried to pull the sleeve out but coudn't get it. I'll try and have another crack at it after I get it started again. We'll see what happens with the coil etc.Funny, if I'm going to have this much trouble with a moped I may consider
Actually I did try the starting fluid in the carb, and it did not start, but I was thinking that maybe the fluid has gone bad, I've had that can around for probably ten years. I'll pull the carb apart (again) and flush it.I'll keep the 'weak spark' in mind. My biggest nightmare is trying to scrounge up parts for this bike so I hope it's not the coil.
Bleck. Now the thing wont run at all. Cant start it. It sparks when I hold the plug against the engine, if I remove the fuel line at the carb, fuel flows thru it. I just added a new fuel filter (and fuel line) so no rust or gunk should have made it's way into the carb but it wont fire up.Whaaaaaaaaaaa! This isn't any fun any more. I'm thinking stuck float needle but why? I thought t
I found that this made it worse. I tried covering it while it was running on the stand and that almost stalled it. I'm having a problem now (after moving the the throttel needle up/clip down one notch) where it wont start and I'm thinking it's a fuel flow problem. there's a big air bubble in my fuel line and the bike wont start. I'll check it more this weekend. Could be pe
It dosent seem to have an original air filter, the jawa has this weird thing (see photo) where it has a rectangular box that sucks air in, then thru the frame, thru a rubber tube and into a plastic cover and into the carb. There dosent seem to be a place to put a filter. I'd thought about trying to stuff a sponge into the rectangular bit but I've seen a couple of posts here saying they d
One other thing, when I replaced the fuel line I left the new line a little long. The line dosent run straight down, it kind of lays over so there is a flat spot. would this slow the flow to the carb or does suction come into play when it's running? I can shorten it up a bit, but I didnt think it would matter. Let me know if it does.
would this show up at higher revs? It dosent seem clogged intha tit runs great at lower speed (idling on the stand). I did try to pull out the sleeve fromthe exhaust but couldnt get it out. I guess I can try it again, if the needle thing doesn't help.
Hmm, browser messed up my drawing, one more timeBefore|..... clip is here|||after||..... move clip to here||.... this raises fuel content
I thinkthe original post was saying basicly to raise the needle up/lower the clip one notch, this would increase fuel flow.The vertical lines represent the needle -|- <clip is here now|||change it so it looks like this||- <move clip down/neddle up||Do I have the concept right? The second position would cause the needle to seat higher allowing more fuel in.
What plug are you using? I have the standard Champion L86C - Idles really well with that.I thought there was no timing adjustment for the Jawa, there is a big warning sign when you take off the cover that says, no servicable parts, do not touch anything in here (or something like that) I think the Owners manual says the same thing, I'll check it when I get home.
Moped Idles perfectly, nice and slow, putt putt putt, idles well when I come to stop, etc... But there is a problem when accelrating or at full throttle.Fels liek it's not getting something that it wants (fuel/air)Any step by steps (ala freds guide) to adjusting the carb for running conditions (not just getitng it to Idle well). Should I try to adjust the throttle plate, etc or is it just a m
Thanks Gabe, Gas tank is not rusty, I'd had the petcock off and flushed the tank with some old gas. there was rust built up in the petcock screen but I cleaned that out. Flow to the carb from the tank is OK.I did try engaging the choke while it was running and that acually caused it to bog 'worse', no accleration at all.There is no air filter on this bike. I was running it on the st
Idles great. Runs, dosent stall when I come to a stop, etc. Takes off from a stop fine. as I drive it, and apply more throttle the bike bucks and does not want to accelrate, it will try to go faster, but it's as if somehting is holding it back.Does the same thing on the stand, if I open it all the way up, it seems to hit a poin ttoward the middle where it's not getting something that it
Hey Top Hat, I'm not sure that the tranny fluid actually foamed, but it did leak from the vent hole in the fill plug at the top of the tranny. I put this on the raod after it had sat for about 15 years so there was realy no fluid to speak of in it at first. I added dexron III to it and checekd the level correctly as far as I can tell. I've flushed it once since then, gotten it hot, let
I didnt actually pull it off, I removed the cover (three scews and a center nut) and then was able to visually inspect the clutch. I didn't dissasemble it or pull anything out.
I got the clutch cover off of my jawa. Everything looks fine in there, the spring is in place. The three little arms look fine, the grabbing material all looks fine, no oil or grease in there. Is that all there is to check? I hear the clutch 'pinging' some times, like when it's bogging or slowing down. Is that normal?Thanks
Took the clutch cover off. everything looks fine. spring is in place,the three little doo-hikeys look ok. the little grabber material is in place. no oil or grease in there.it's weird, I guess what's actually happening is that when I give it half or full throttle it's just not getting enough power. I tried choking it while I was riding it (that is supposed to richen the mixture) but
Nah, the pinging is deffinetly coming from in side the clutch cover. I'll pull it off and have a look. If I get that off I can always pull the tranny cover off as well and see if there is any goo built up in there, etc...
I'm willingto try differentoils in there but do I run the risk of messing something up if they mix a little bit I.e. will teh left over dribbles of dexron III mix with the 30 weight synthetic motor oil and turn into goo?Did you say you used two stroke motor oil? You mean the kind I mix with the gas? :confused:
the original jawa owners manual says 4oz (half a cup) and when I fill it with that much (after draining it) it fills up and dribbles just a little bit from the check screw hole. I cant see how I could be over filling it.
You know, it did look a little 'foamy' now that you mention it.My original owners manual for the JAWA says to use 'ATF'. but it does not state what kind. I put Dexron III in it. Can I try draining it and putting in 10w 40 with out causing any issues? I dont know enough about it to know whether mixing or adding in a differnet kind of oil would screw anything up.
Ok, I understand that it would need to breathe but it did leak quite a bit, enough to make a mess on the top of the tranny cover.I guess I'll try to get the clutch cover off (have to buy a strap wrench) and have a look. It does feel like it's slipping underload but I've seen other threads where it came back to the carb. I'll try running it with the choke on to see if it'sa
So I drained the transmission fluid from my jawa, refilled with 4oz of Dexron III, tightend everything up and took it for a ride around the block. It idles perfectly, and runs at a slow speed well. When I try to accelerate it to half or full throttle, the bike 'bucks', like it's try to grab and pull me faster, but something is stopping it. If I ride it for say five minutes, it will
Let me know if you cant get it figured out, I can take a snappy of mine and post it for you for reference. Should be similar I would think.
how do I get the right level? There is a check level screw. When I filled it (cold) I filled up till it started to leak from that hole. Should I get it hot and then recheck the level screw i.e, let the fluid drip out after it gets hot?
I put CAM2 Dexron-III/Mercon ATF automatic transmisson fluid (approved for H specification) in my 1982 Jawa Supreme.Can anyone tell me if that's a 'bad' thing? The owners manual says to use 4oz of ATF fluid but dosent state what kind. It's been leaking a littel bit since I put it in. (filled it till it leaked out of the level check hole).Any recomendations?Thanks
Anybody? I assume it's similar on other mopeds as well. Is there an easy way to lock the fly wheel or whatever it is so I can get both hands on the ratchet to turn the nut that holds the clutch cover in place?