It will likely be a light duty homeowner unit with the Comet pump. The Robin is a good engine but are parts and service readily available in your area? Robin dealers are scarce here.

Not sure about Suburu replacement parts in my area. I live in Michigan, USA. Here is a link to a description and photo from the company:

http://www.powr-quip.com/pressurewasherimage.html

and another link to a current eBay auction for the same model:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220174701902&_trksid=p3907.m32&_trkparms=tab%3DWatching

I know the company also markets generators, air compressors, etc but have no experience with them or their pressure washers.