Fuel tank grommet. Secures the fuel supply, return and vent lines to the fuel tank.
Nut-Locking. The manufacturer has changed vendors and the part may vary in character. Some do not have a nylon insert, however the nut is a locking type.
Lock nut with nylon insert.
Tecumseh fuel line clamp.
Briggs & Stratton flywheel key. The flywheel key aligns the flywheel in the correct position on the crankshaft. If the engine stops suddenly due to hitting a hard object, the flywheel key shears in half to prevent damage to the engine. If the flywheel key is broken, the engine won't start.
Grommet fuel tank
MTD carriage bolt, 1/4-20 x .62".
Washer 3/8 Splt Lock
Nylon insert locking nut. Used as part of the shear bolt assembly, as well as other locations within the equipment.