If the unit is new check and make sure the choke is fully operational. The Carb might have something not connected or out of adjustment. If it was me I'd be bringing this unit back. Why should you have to play with a brand new washer. I've got a work shop full of marginall units which run like a tempermental donkey. Although most of them have at least 1500hrs on them.

DAFF

DAFF MOBILE WASH
WINDSOR, ONTARIO CANADA
DAFFMOBILEWASH@AOL.COM