My Briggs and Stratton 8 hp Westwood Gazelle mower engine makes a high pitch clicking when you try and start it via the ignition When trying the pull cord it turns freely but the cord returns slow?

Is your battery ok? looks like there is not enough power to start the engine, but just for the starter relaiy Kind regards: Eddy P.S. i am looking for the instruction manual for a '83 westwood 30" single cutter. any idees ,