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The carbs have been synched

The rod has been greased. It operates smoothly but I still think the springs are a tad too light.

My 1976 XS650C is running a Pamco electronic ignition and stock (re-built) carbs. It runs perfectly, but tends to resist returning to the proper idle RPM when warm. I have explored every possible cause I can think of and have come to suspect that the spark advance is hanging up. I've...

So, I started her up and let her get good and warm. The chirp was still there in the area of the RH carb. I sprayed a little Simple Green around the joint between the carb and the rubber intake manifold and the chirp immediately stopped. I repositioned the clamp and screwed it down tight. No...

I'll look for an intake leak. I thought this might be the culprit. Only 1500 miles on the engine since rebuild.

Nice lines and proportions. How's the ride quality?

Ok. So my 1976 XS650C runs like a Swiss watch. Mike's XS big fin cylinders and pistons, electronic ignition, new electrical system, everything. Plenty of power and starts and runs beautifully. It has the stock Mikuni carbs with new sliders and diaphragms, new needles/seats, and new jets...

I'm running a 1976 XS with the Pamco electronic ignition kit from Mike's XS. Stock Mikuni carbs with new diaphragms and sliders. The bike starts and runs great, but I've been experiencing trouble with it not wanting to drop back down to the normal idle speed (approx 1200 RPM) after it gets...

She is now for sale http://cgi.ebay.com/ebaymotors/Customized-1976-Yamaha-XS650C-Pegasus-650-Speedwing-British-Tribute-/121108541142?_trksid=p3984.m1558.l2649&ssPageName=STRK:MESELX:IT&forcev4exp=true

My customized 1976 XS650C is for sale http://cgi.ebay.com/ebaymotors/Customized-1976-Yamaha-XS650C-Pegasus-650-Speedwing-British-Tribute-/121108541142?_trksid=p3984.m1558.l2649&ssPageName=STRK:MESELX:IT&forcev4exp=true

Stock early shouldered rims. Tires from Tucker-Rocky.