Welcome to the site, I have used his VMmanuals to refresh the job I am going to do and they are worth the $. Between this site, ScannerDanner’s and Donnyboy73 for small engines you can fix most anything.
Depends on how long you have owned it and repair history you have. This is normal maintenance. I agree with the other poster that is a lot of miles. I’ve had a lot of Hondas and never gotten rid of one due to a poor engine if kept up on normal repairs.