YAMAKATO Electric Start Flywheel – Honda GX340/GX390 11HP/13HP

The YAMAKATO Electric Start Flywheel is an OEM replacement part designed exclusively for Honda GX340 and GX390 engines (11HP/13HP, 339cc–389cc displacement). This flywheel is engineered to match the Q-type crankshaft specification, ensuring a precise fit and reliable performance for these popular small engines.

It’s important to note that the GX390 engine comes in two variants with different ignition timings (Before Top Dead Centre, or B.T.D.C.). This means there are two distinct flywheel types required—verify the correct model against the provided images before purchasing. The alignment of the key slot relative to the magnet is also critical for proper installation; refer to the visual guides for guidance.

This package includes one electric start flywheel and a mounting plate, both made from durable metal. With a weight of 6.07 kg, it’s designed for long-term use in applications like generators, pressure washers, and other power equipment. For additional compatibility, this flywheel also fits Honda 183F and 188F engines (11HP/13HP).