Pistol Pete Posted March 22, 2009 Share Posted March 22, 2009 Just piked up at 78 XS 400 on the cheap. Running pretty well after cleaning the carbs. One of the carbs has a needle that's broken off and I assume that's why one cylinder backfires a bit while at idle. Ordered a carb kit from fleabay which should hopefully take care of that. Now the for question The kickstart lever when all the way down hits the rear brake pedal arm. Sometimes to the point they will bind up on each other. I've rotated the rear brake down slightly so they wont hit but it puts the pedal below the footpeg which renders it useless. I'm wondering if I have an incorrect kickstart lever or wrong/bent brake pedal. Even the ones I see on fleabay seems to have wear in the spot where mine hit. Is this a common problem with these bikes? Pete Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 22, 2009 Moderator Share Posted March 22, 2009 The kickstart lever when all the way down hits the rear brake pedal arm. Sometimes to the point they will bind up on each other. I've rotated the rear brake down slightly so they wont hit but it puts the pedal below the footpeg which renders it useless. I'm wondering if I have an incorrect kickstart lever or wrong/bent brake pedal. Even the ones I see on fleabay seems to have wear in the spot where mine hit. Is this a common problem with these bikes? Pete my brake pedal is slightly below the footrest, that way i can rest my foot on it with out depressing the rear brake!! may be its just the setup, but never had any probs in that dept. Link to comment Share on other sites More sharing options...
dragonnoodle Posted March 28, 2009 Share Posted March 28, 2009 Be careful with the mixture needles the tips like to stay in the carb body if toightened too far and if left tighten for too long. your kick start shouldn't bind up on the brake peddle at all, maybe rub but not bind. Just piked up at 78 XS 400 on the cheap. Running pretty well after cleaning the carbs. One of the carbs has a needle that's broken off and I assume that's why one cylinder backfires a bit while at idle. Ordered a carb kit from fleabay which should hopefully take care of that. Now the for question The kickstart lever when all the way down hits the rear brake pedal arm. Sometimes to the point they will bind up on each other. I've rotated the rear brake down slightly so they wont hit but it puts the pedal below the footpeg which renders it useless. I'm wondering if I have an incorrect kickstart lever or wrong/bent brake pedal. Even the ones I see on fleabay seems to have wear in the spot where mine hit. Is this a common problem with these bikes? Pete Link to comment Share on other sites More sharing options...
Pistol Pete Posted March 31, 2009 Author Share Posted March 31, 2009 Be careful with the mixture needles the tips like to stay in the carb body if toightened too far and if left tighten for too long. your kick start shouldn't bind up on the brake peddle at all, maybe rub but not bind. Well sure enough one of the mixture needs is broken off and the tip is stuck in there just slightly protruding into the body of the carb. After picking at it with whatever right angle tool I could find in my garage I wasn't able to get it out. Anyone have any tips on how to get this sucker out. I assume it will only come out the way it is supposed to go in. Maybe a small right angle pick like a dental pick or maybe drill it out from the top. Any suggestions or tips here? Thanks Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 31, 2009 Moderator Share Posted March 31, 2009 its brass and the only way is to press it down, it wil open up the hole slightly but new needles will screw down to compensate Link to comment Share on other sites More sharing options...
Pistol Pete Posted March 31, 2009 Author Share Posted March 31, 2009 its brass and the only way is to press it down, it wil open up the hole slightly but new needles will screw down to compensate Thanks for the reply. Any suggestions on what kind of tool to use. Maybe a straight pick or an all. Link to comment Share on other sites More sharing options...
Pistol Pete Posted April 1, 2009 Author Share Posted April 1, 2009 its brass and the only way is to press it down, it wil open up the hole slightly but new needles will screw down to compensate Ok I pushed that little sucker out and replaced it. Idles perfect now no backfires. But it leaves me with a new problem. I now occasionally backfire when running 2000-3000 rpm. I assume I have to set the needle much lower than before...? Link to comment Share on other sites More sharing options...
Moderator drewpy Posted April 1, 2009 Moderator Share Posted April 1, 2009 Ok I pushed that little sucker out and replaced it. Idles perfect now no backfires. But it leaves me with a new problem. I now occasionally backfire when running 2000-3000 rpm. I assume I have to set the needle much lower than before...? yep! you'll have to fiddle i'm afraid. Its an old bike so wont be perfect fuelling Link to comment Share on other sites More sharing options...
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