Patent ID: 6388446
Filing Date: 2002-05-14
Classification: F02B,F02P

Abstract:
An auxiliary engine ignition timing display tool for use with a strobe timing light in setting the ignition timing of a Harley Davidsonâ„¢-type motorcycle engine, the engine having an indicator for ignition timing viewable on a timing indicator side of the engine and an engine ignition timing setting adjustment device accessible on a timing adjustment side of the engine, the timing adjustment side of the engine being opposite the timing indicator side of the engine; the engine also including a rotatable cam assembly, a gear cover and an ignition unit, the timing display tool comprising, in combination:(a) a rotatable pointer cam bolt having a distal end for releasable attachment to the cam assembly; (b) a pointer indicator for attachment to a proximal end of the pointer cam bolt; (c) an ignition timing measuring plate which when installed is on the timing adjustment side of the engine said measuring plate having a plurality of ignition timing marks for indicating the degree of spark advance or retard relative to a top dead center position; (d) measuring plate fasteners for releasably fastening the measuring plate to the engine or gear cover and positioning the measuring plate proximal to the pointer indicator; whereby the measuring plate and pointer indicator in conjunction with the strobe timing light set to the spark firing frequency of the engine are operable to provide an indication of the ignition timing of the engine while the engine is running.