While the Honda EX500 generator manual is exhaustive, it was written in the pre-ethanol fuel era. Here are modern updates:
Without the manual, you might replace the spark plug (which is rarely the issue) or the entire carburetor ($80) instead of cleaning a $2 fuel valve diaphragm. honda ex500 generator manual
There are a few sources where you can find a manual for the Honda EX500 generator: While the Honda EX500 generator manual is exhaustive,
Since the is a portable generator, its "story" isn't a fairytale, but rather a history of reliability and a practical guide to ownership. : Delivers roughly 330VA (400VA max) at 50Hz,
: Delivers roughly 330VA (400VA max) at 50Hz, or 400VA (500VA max) at 60Hz.
Go to powerequipment.honda.com → Support → Owner’s Manuals. Search "EX500." You will need the frame serial number (located on the rear of the generator frame). Honda offers a free PDF download.