[bblueser]

Please describe the differences between the two Honda lawnmower models noted in the title.

Also, I recently purchased a HRX2173hya and noticed the choke has changed from my neighbor's HRX217hxa model. What has changed on the choke, and/or the carb?

Finally, the owner's manual says to add 12.0-13.5 ounces of new oil when changing the oil in my 2173hya. My neighbor's sa7hxa requires adding 15 ounces of oil when changing the oil.

What is the correct amount of oil to add to my HRX2173hya when changing the oil?