1977 1979 1981 1982 battery bobber brake brakes brat build cafe cafe racer cafe racer build project carb carbs carburetor carburetor jetting carburetors charging chopper clutch controls custom cylinder dohc drewpy's tracker electric electric start electrical electrical problem engine engine question engine rebuild events exhaust fabricating for sale forks frame front fuel fuel tank gasket gear handlebars headlight help help me identify how to idle ignition intro introduction leak lights maintenance master cylinder maxim maxim 400 model id new guy non-xs400 oil oil leak paint parts petcock pictures piston project rebuild rectifier regulator restoration seat seca seca 400 spark speedometer starter starting stator suspension tank tci tech throttle timing tires tools tracker transmission wheels wiring wiring diagram xs 400 xs250 xs360 xs400 yamaha