OB3437 Service Manual – Chrysler 55HP

The OB3437 Service Manual is the original factory-issued OEM repair guide for Chrysler’s 55HP outboard engines (models 559B0M, 559H0M, 559H0N). Published in June 1980, this manual contains ~175 pages of technical detail designed to match original Chrysler / West Bend specifications. It covers everything from engine specs (55 B.I.A HP at 5000 RPM, ~818 cc displacement) to detailed diagrams, part identifications, maintenance schedules, fuel & ignition systems, and lower unit service.

The manual is organized into essential sections:

• Introduction & General Service Information

• Fuel System & Components

• Ignition System

• Power Head / Internal Engine Work

• Lower Unit Maintenance

• Electrical / Wiring & Magneto Systems

• Remote Control & Operating Controls

In this OB3437 Service Manual each section includes step-by-step instructions, OEM torque values, troubleshooting tips, and visual diagrams—perfect for mechanics and serious DIYers. Shop at Arizona Outboard Dismantlers for the parts you need to stay on the water.
Published by Chrysler Marine / West Bend, this OB3437 manual retains original specifications and production standards. It’s a trusted reference for engine rebuilding, part sourcing, and accurate restoration.