Honda air cleaner (or air filter). If the air filter is clogged or dirty, the engine may not start or may run rough.
Small engine NGK spark plug (BPR6ES). If the engine does not start, the spark plug may be defective. The spark plug should be replaced periodically during regular maintenance.
Carburetor gasket. If this gasket is torn or damaged, the engine may run rough. Be sure to clean the surfaces around the carburetor gasket before installing it.
Lawn mower air cleaner cover. If this cover is cracked, or if one of its holding tabs is broken, replace it.
Small engine carburetor gasket. If the gasket is torn or damaged the engine may run rough.
Honda insulator gasket.
Honda Carburetor (BB62W B). If the carburetor is clogged, the engine won't get enough fuel. As a result, the engine may not start or may run rough. The carburetor can often be cleaned or rebuilt, but sometimes it may need to be replaced.
Carb float bowl gasket set
Honda carburetor insulator.
Throttle Return Spring
Honda air cleaner case.