There are several good reasons to register your portable generator with Caterpillar:
1.  Customers that register their Cat Portable Generator with Caterpillar within thirty (30) days of purchase will receive an extra year of warranty coverage for a total of three (3) years.
2.  You will be the first to know about product updates, alerts and recalls.
3.  Registration will make it easier to make a warranty claim
 
You'll need your basic contact information, your proof of purchase and the serial number from your unit.  The serial number plate is located on the side of the engine behind the recoil (point one)

To register your product, go to https://www.cat.com/homeandoutdoorpower-warranty