micha Posted March 17, 2011 Share Posted March 17, 2011 Hello, I'm Micha from the Netherlands and i have a beauty full 1979 xs400. The bike stood still for about 10 years and ran again after replacing the old fuel. Now i want to get it running properly. can someone tell me how to adjust the ignition timing? i know that the breakers need a gap of 0.4 mm and that the bike sparks when they open, but my flywheel had multiple signs on it, how do i know which one to use? Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 17, 2011 Moderator Share Posted March 17, 2011 Hello, I'm Micha from the Netherlands and i have a beauty full 1979 xs400. The bike stood still for about 10 years and ran again after replacing the old fuel. Now i want to get it running properly. can someone tell me how to adjust the ignition timing? i know that the breakers need a gap of 0.4 mm and that the bike sparks when they open, but my flywheel had multiple signs on it, how do i know which one to use? use a strobe lamp and adjust to the right hand mark when it flashes. LT and RT is for the static setting only! Link to comment Share on other sites More sharing options...
Hornix Posted March 18, 2011 Share Posted March 18, 2011 Here's a great "manual" auf Deutsch http://xs400.net/wb/media/faq_anhaenge/zuendung_v1_2.pdf Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 18, 2011 Moderator Share Posted March 18, 2011 Here's a great "manual" auf Deutsch http://xs400.net/wb/media/faq_anhaenge/zuendung_v1_2.pdf double dutch Link to comment Share on other sites More sharing options...
Hornix Posted March 19, 2011 Share Posted March 19, 2011 Will we ever see Micha again?? Or is he busy adjusting the ignition, German style? Link to comment Share on other sites More sharing options...
micha Posted March 20, 2011 Author Share Posted March 20, 2011 I managed to tune the ignition with the german manual, it now runs better. Now i only need to tune the carburetors, i think he is running to lean. Is it possible to adjust the mixture with the screw on the front side of the carb(number 25 on this parts list http://www.cmsnl.com/yamaha-xs400-2e-1978_model8665/partslist/C-01.html ) or is this only to adjust the idle air? Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 20, 2011 Moderator Share Posted March 20, 2011 I managed to tune the ignition with the german manual, it now runs better. Now i only need to tune the carburetors, i think he is running to lean. Is it possible to adjust the mixture with the screw on the front side of the carb(number 25 on this parts list http://www.cmsnl.com/yamaha-xs400-2e-1978_model8665/partslist/C-01.html ) or is this only to adjust the idle air? put it 3 1/2 turns out from the carb from lightly resting, or you'll snap off the delicate tip. In fact take them out and check they are really pointed, otherwise they have already been snapped off. It has happened twice to me. Link to comment Share on other sites More sharing options...
YPVS TONE Posted March 20, 2011 Share Posted March 20, 2011 Seem to remember on the XS250/400 the LT and RT marks refer to Left and Right TDC (Top dead centre) positions. You should see LF and RF marks which is when the points should begin to open with the engine stopped (static)or when strobed with the engine ticking over. Tony. Link to comment Share on other sites More sharing options...
Moderator drewpy Posted March 20, 2011 Moderator Share Posted March 20, 2011 Seem to remember on the XS250/400 the LT and RT marks refer to Left and Right TDC (Top dead centre) positions. You should see LF and RF marks which is when the points should begin to open with the engine stopped (static)or when strobed with the engine ticking over. Tony. oops your right Tone rt = timimg for the valves and the rf = firing Link to comment Share on other sites More sharing options...
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