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    Retarded

    XSJohn experimented a lot... and shared his experiences... I decided to try one of his suggestions "gear it tall but retard the timing" I tried the stock 17/34 USA gearing for a couple years, but it wasn't pleasant for freeway cruising. Then, I really enjoyed running a 30 tooth sprocket for...
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    38 tooth gearing experiment

    So far I have run 30, 34 and 38 tooth rear sprockets. All with 17 tooth front. I really liked the 30 tooth for all around use. One thing has become clear. The changes have less impact on low first gear than on 5th. Now that my bike is set up for exploring on back mountain roads (some are...
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    XS650 Cooling

    Since I got my cafe scrambler running, I've been riding with an infra red thermometer in my pocket and spot checking the temps... too high... at the head/cylinder junction just rear of the spark plug it got over 300f on a 90+ day . I need a cooler machine! Been tuning the carbs but got fed up...
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    which way to turn pilot screw...

    Hello: It's been so long since I had the XS650SH running I forget. I made some changes to the exhaust and need to tweek the BS34 Mikunis. On the pilot screw does clockwise make it richer?
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    Scramberized Build

    I just glommed different aspects into a bike to meet my needs. I might call it: Cafenduro These pics show it after firing up after an 8 year build process. It ran well but poured gas out of the T that feeds gas into the carbs... carbs are off here.
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    OK to use DOT 5 brake fluid

    I am reassembling my 1981 xs650 front disk brake, okay to use DOT 5 fluid? Also, there's these brass anti-squeel shims for the pads... no prob to leave these off, right?
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    shims needed on front brake? (81 XS650 SH)

    I'm adding a second rotor with a caliper from a Yamaha SR-500. So I now have 2 matching calipers but one is missing the thin metal shims... even needed?
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    Anyone run radial tires on stock xs650 rims?

    like on the special cast rims?
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    Performance of shorty exhaust

    I am building a scramblerized 1981 XS650. I cut the mufflers off of the headers and have supertrapp mini mufflers (which are also spark arrestors) that will slip on. This is simple and looks good... but will it significantly degrade the performance compared to extending the headers by say 8"...
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    carb rubber paper gasket

    when I mount the carburettor rubber to the head, should I use gasket glue on both sides of the paper gasket?
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    For Sale - shocks from 1981 XS650 special

    Used pair of stock shocks, work well. No leaks, still have damping. Removed from 1981 Yamaha XS650 Special. About 13" eye to eye. $30 + shipping cost. Email jon@calsurv.com or call 530-seven-one-eight-0041
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    For Sale - 18" rear dual sport tire

    CONTI TWINDURO TKC80 DUAL SPORT 40% ON 60% OFF ROAD Size: 120/90-18 I bought this new less than a year ago for 109.85. Never been mounted. $50 + shipping call 530-seven-one-eight-0041 or email jon@calsurv.com
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