ARCTIC CAT 550 H1 EFI MANUAL Pdf Download. Page 1 550 H1 EFI..; Page 2 For your safety, understand and follow includes detailed instructions for certain all the warnings contained in this Opera- Arctic Cat ATV’s (see cover). Follow tor’s Manual and the labels on your the guidelines for the type of ATV you ATV. Page 3: Introduction 2009 Arctic Cat 550 H1 550H1 ATV Service Repair Manual Oct 19, 20172009 Arctic Cat 550 H1 550H1 ATV Service Repair Manual 1. FOREWORD This Arctic Cat Service Manual contains service, maintenance, and troubleshooting information for certain 2009 Arctic Cat ATV models (see cover). The complete manual is designed to aid service personnel in service-oriented applications.