Engine Operation; Normal Engine Operation; Break-In Service - Northern Lights OM-C3 Operator's Manual

Marine engines

Table of Contents

Normal Engine Operation

Observe engine coolant temperature and engine

oil pressure. Temperatures and pressures will vary

between engines and with changing operating conditions,

temperatures, and loads. See GENERAL ENGINE

SPECIFICATIONS in Specifications Section near end of

manual for temperature and pressure specifications for

your engine.

If coolant temperature rises above the maximum coolant

temperature (see Specifications Section) reduce load on

engine. Unless temperature drops quickly, stop engine

and determine cause before resuming operation.

Operate the engine under a lighter load and at slower than

normal speed for first 15 minutes after start-up. DO NOT

run engine at slow idle unless necessary for maneuvering

out of dock and harbor.

Break-In Service

The engine is ready for normal operation. However, extra

care during the first 100 hours of operation will result in

more satisfactory long-term engine performance and life.

DO NOT exceed 100 hours of operation with break-in

oil. See GENERAL ENGINE SPECIFICATIONS in

Specifications Section near end of manual for oil pressure

and coolant temperature specifications for your engine.

1. This engine is factory-filled with John Deere Engine

Break-in Oil. Operate the engine at heavy loads with

minimal idling during the break-in period.

2. If the engine has significant operating time at

idle, constant speeds, and/or light load usage, or

makeup oil is required in the first 100 hour period,

a longer break-in period may be required. In these

situations, an additional 100 hour break-in period is

recommended using a new change of John Deere

Engine Break-In Oil and a new John Deere oil filter.