The last SG20 I bought was 6 yrs ago. It lasted one season and the pump seals failed. I was disappointed with the cost of parts and the lack of availability so I stripped it down and converted the tank to a saddle tank for my Z spray. An electric pump and a few plumbing parts and I now have an independent sprayer with jet agitation for my ride-on. It sprays 1/4 gal per minute.
I have been using Echo BP's since and have had zero issues. Even though my MS-50's have been discontinued by Echo, I am still able to view parts lists and purchase parts online.
I understand mfg to dealer loyalty but not offering parts online is poor business for this day in age in my opinion.
"The Poor Fish" circa 1930's: The Poor Fish wouldn't have been caught if he'd known enough to keep his fool mouth shut.
"Opportunity is missed by most because it is dressed in overalls and looks like work"- Thomas Edison, businessman/inventor