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.
Lawn mower blade adapter. 25mm. If the lawn mower's blade isn't engaging properly, the blade adapter may be stripped. If the blade adapter is stripped, replace it.
Screw, 1/4-20 x .5
Blade retaining bolt
Lock nut, 3/8-16
Torsion spring, mulch door