Get_some Posted April 6, 2021 Report Share Posted April 6, 2021 The red rolling shitheap. I took the handlebars and cowling apart to fit a replacement cowl. I'm reassembling now which is as much fun as covid. The throttle assembly is baffling me, when I start the bike the throttle is wide open, all 4 ponies trying to break free. Anyone tinkered with one of these and know where I am going wrong? Quote Link to comment Share on other sites More sharing options...
Damnthistinleg Posted April 6, 2021 Report Share Posted April 6, 2021 It's quite easy to get the cable nipple caught up at the carb end and that would hold the throttle open. Is the slider closing fully when you shut the throttle off? Have you got the slider in correctly with the guide pin/slot matched up? The carbs on these are so simple there's not a huge amount else it can really be. 2 Quote Link to comment Share on other sites More sharing options...
Get_some Posted April 6, 2021 Author Report Share Posted April 6, 2021 13 minutes ago, Damnthistinleg said: It's quite easy to get the cable nipple caught up at the carb end and that would hold the throttle open. Is the slider closing fully when you shut the throttle off? Have you got the slider in correctly with the guide pin/slot matched up? The carbs on these are so simple there's not a huge amount else it can really be. Its not at the carb end, i think it's the throttle assembly I'm messing up Quote Link to comment Share on other sites More sharing options...
Damnthistinleg Posted April 6, 2021 Report Share Posted April 6, 2021 I get that but if you've had the throttle assembly apart the cable goes slack and this could allow the nipple at the carb end to drop out of its hole, thereby lifting the slider high when you put it back together. It may not be that but for the sake of 30 seconds of unscrewing the cap it's well worth a look. Then make sure the cable outer isn't snagged on the outside of its adjuster barrel. Are you getting full throttle movement or does it feel like some kind of very quick QA throttle? 1 Quote Link to comment Share on other sites More sharing options...
Get_some Posted April 6, 2021 Author Report Share Posted April 6, 2021 9 minutes ago, Damnthistinleg said: I get that but if you've had the throttle assembly apart the cable goes slack and this could allow the nipple at the carb end to drop out of its hole, thereby lifting the slider high when you put it back together. It may not be that but for the sake of 30 seconds of unscrewing the cap it's well worth a look. Then make sure the cable outer isn't snagged on the outside of its adjuster barrel. Are you getting full throttle movement or does it feel like some kind of very quick QA throttle? Thanks I understand now, I'll give it a go tomorrow. The throttle isn't moving freely, there is a channel with the assembly that the throttle cable sits in, feels like it is fouling on the part which would be the closed throttle position, but if I twist the throttle to rest in that position it revs really high, if you get me? Quote Link to comment Share on other sites More sharing options...
trackdaybob Posted April 7, 2021 Report Share Posted April 7, 2021 15 hours ago, Get_some said: when I start the bike the throttle is wide open, all 4 ponies trying to break free. Just leave it. You'll be flat out everywhere anyways 6 Quote Link to comment Share on other sites More sharing options...
Get_some Posted April 16, 2021 Author Report Share Posted April 16, 2021 Right, got it running again but still can't figure out how this goes back together Quote Link to comment Share on other sites More sharing options...
Gixxerthou Posted April 21, 2021 Report Share Posted April 21, 2021 On 4/16/2021 at 11:15 AM, Get_some said: Right, got it running again but still can't figure out how this goes back together If that's not a wind up then you shouldn't be allowed near a motorbike with a set of tools again... ever 😄 2 3 Quote Link to comment Share on other sites More sharing options...
Get_some Posted August 2, 2023 Author Report Share Posted August 2, 2023 I've been using this beast on the road after it flew through the mot with only a concerned look from the tester and a comment about the useless brakes... Does anyone know where I could get a small block of led lights that could replace the headlight? Quote Link to comment Share on other sites More sharing options...
Hayes Posted August 2, 2023 Report Share Posted August 2, 2023 Have a look at the Durite range of led lights, I put some on a fork lift last year, awesome. 1 Quote Link to comment Share on other sites More sharing options...
Get_some Posted February 23 Author Report Share Posted February 23 (edited) I was riding the c90 in September and it ran out of fuel (I think, fuel gauge seems to work). I refilled it at the garage but it wouldn't fire and hasn't since. I let it sit over winter but this week I've been trying to get it going again. I thought the non starting might be because the float was stuck so I removed the carb and had a look,it all looked clean. Checked the battery and spark and all seems fine. Still won't start. Could it be an issue with the new ethanol fuel? Edited February 23 by Get_some Quote Link to comment Share on other sites More sharing options...
lorenzo Posted February 23 Report Share Posted February 23 (edited) Tow it behind a car and repeatedly dump the clutch until it runs again. In all seriousness, take the pilot jet out and clean it to within an inch of it's life. Edited February 23 by lorenzo 1 Quote Link to comment Share on other sites More sharing options...
Gixxerthou Posted February 23 Report Share Posted February 23 5 hours ago, Get_some said: I was riding the c90 in September and it ran out of fuel (I think, fuel gauge seems to work). I refilled it at the garage but it wouldn't fire and hasn't since. I let it sit over winter but this week I've been trying to get it going again. I thought the non starting might be because the float was stuck so I removed the carb and had a look,it all looked clean. Checked the battery and spark and all seems fine. Still won't start. Could it be an issue with the new ethanol fuel? Probably shit in the jets like Loz says. Take the carb out, remove the jets and blow_away... or use a compressed air gun. Quote Link to comment Share on other sites More sharing options...
Get_some Posted February 23 Author Report Share Posted February 23 (edited) 44 minutes ago, Gixxerthou said: Probably shit in the jets like Loz says. Take the carb out, remove the jets and blow_away... or use a compressed air gun. Thanks for the suggestions, done and now she's firing,but revving her nuts off Turning the idle screw has no effect, could that mean an air leak? Edited February 23 by Get_some Quote Link to comment Share on other sites More sharing options...
wazrs257 Posted February 24 Report Share Posted February 24 14 hours ago, Get_some said: Thanks for the suggestions, done and now she's firing,but revving her nuts off Turning the idle screw has no effect, could that mean an air leak? Air leak, or the throttle cable's caught up somewhere. Quote Link to comment Share on other sites More sharing options...
GSXR814 Posted February 24 Report Share Posted February 24 17 hours ago, Get_some said: Thanks for the suggestions, done and now she's firing,but revving her nuts off Turning the idle screw has no effect, could that mean an air leak? How did you fix it last time it was revving it's tits off? Quote Link to comment Share on other sites More sharing options...
Get_some Posted February 24 Author Report Share Posted February 24 31 minutes ago, GSXR814 said: How did you fix it last time it was revving it's tits off? The throttle cable was too tight or the carb slide wasn't in correctly Quote Link to comment Share on other sites More sharing options...
Get_some Posted February 25 Author Report Share Posted February 25 Eh So In the spirit of no such thing as a silly question... Would the excessively revving be caused by the airbox not being tightly sealed to the carb? I put on new gaskets and used gasket seal to make sure the carb to manifold is airtight, disconnected the throttle cable from the bars and it was still revving out. Quote Link to comment Share on other sites More sharing options...
Gixxerthou Posted February 26 Report Share Posted February 26 (edited) 17 hours ago, Get_some said: Eh So In the spirit of no such thing as a silly question... Would the excessively revving be caused by the airbox not being tightly sealed to the carb? I put on new gaskets and used gasket seal to make sure the carb to manifold is airtight, disconnected the throttle cable from the bars and it was still revving out. Slide not seated correctly, cable maladjusted or return spring under the carb misplaced or fouled, other suspect would be idle screw fully 'in'. Not sealing with the airbox would just make it run lean. Edited February 26 by Gixxerthou 1 Quote Link to comment Share on other sites More sharing options...
Get_some Posted February 26 Author Report Share Posted February 26 48 minutes ago, Gixxerthou said: Slide not seated correctly, cable maladjusted or return spring under the carb misplaced or fouled, other suspect would be idle screw fully 'in'. Not sealing with the airbox would just make it run lean. I think it's one of those. Spoke to my father in law (retired engineer of 100 odd years) and his first words where "it's pretty simple really..." still laughing about that comment now 1 Quote Link to comment Share on other sites More sharing options...
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