I'd agree with Tim, alcohol isn't the thing to use in a brake system .... I'd completely tear down the brakes and chack everything, replace anything that needs it [rusty guts and old rubber] then refill with proper fluid, if you want to do some cleaning when it's apart, use 'Brake Kleen' [basicly acetone] .... if you just want to play around the yard, just add enough fluid to get pedal and pull it all apart later
