Small engine Champion spark plug (RJ19LM). If the engine does not start, the spark plug may be defective. The spark plug should be replaced periodically during regular maintenance.
MTD flange lock nut, 5/16-18.
Lock nut, 3/8-16
Self-tapping Screw,15/16-18 x .875
Hex washer screw, 3/8-16 x 1.000
Flat washer. .760" I.D. x 1.5" O.D.
Coupling-logsplitter .500 engine side
Log splitter coupling, .875 pump side