0582724 0583378 OMC Timer Base Trigger | Genuine Used Part

🔧 Product Description

Genuine Used Evinrude Johnson Three-Cylinder Timer Base Assembly - Part Numbers: 0582724 and 0583378

A genuine pre-owned OMC, Evinrude and Johnson timer-base and ignition-trigger assembly for selected three-cylinder two-stroke outboards.

Part number 0583378 supersedes earlier timer base 0582724 and is used on compatible 60HP, 65HP, 70HP and 75HP engines without the later Quick Start ignition system.

The timer base is mounted beneath the flywheel and contains the trigger coils that generate crankshaft-position signals for the power pack. It also rotates with the throttle and spark-advance linkage to alter ignition timing as engine speed increases.

⚙️ Key Features

• Genuine OMC, Evinrude and Johnson used timer base

• Current assembly reference 0583378

• Replaces earlier timer base 0582724

• Three-cylinder ignition-trigger configuration

• Designed for engines without Quick Start

• Works with the engine's power pack and spark-advance linkage

• CDI Electronics aftermarket replacement available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 0581949 - Earlier three-cylinder timer base

• 0582724 - Earlier timer-base assembly

• 0583060 - Related earlier timer-base reference

• 0583131 - Related earlier timer-base reference

• 0583378 - Later OEM timer-base kit

• 0584269 - Related later service reference

• 0584562 - Related later service reference

• 0763777 - Related BRP service timer-base reference

• 0778438 - Related service-kit reference

OEM / Related Numbers:

• 0582724

• 582724

• 0583378

• 583378

• 0581949

• 581949

• 0583060

• 583060

• 0583131

• 583131

• 0584269

• 584269

• 0584562

• 584562

• 0763777

• 763777

• 0778438

• 778438

Aftermarket / Verified Equivalents:

• CDI Electronics: 133-3378

• Sierra-related interchange: 18-99406

• WSM / CDI three-cylinder timer base 133-3378

• Aftermarket replacement for 0582724 / 0583378

🚤 Compatibility

Commonly used on:

• Evinrude three-cylinder two-stroke outboards

• Johnson three-cylinder two-stroke outboards

• Loop-charged 60HP to 75HP engine families

• Ignition systems without Quick Start

Typically suits:

• 60HP:

• Selected 1992-2001 three-cylinder engines

• 65HP:

• Selected 1979-2001 three-cylinder engines

• 70HP:

• Selected 1979-2001 three-cylinder engines

• 75HP:

• Selected 1979-1990 three-cylinder engines

• Engine Configuration: Three-cylinder two-stroke

• Ignition Type: Capacitor-discharge ignition without Quick Start

• Trigger Type: Multi-coil rotating timer base

Important fitment note:

• Some later 60HP and 70HP engines use a different timer base with Quick Start or a different wiring connector.

• Confirm the original timer-base number, wire colours, connector shape and spark-advance linkage before ordering.

• The stator, power pack, flywheel and mounting hardware are included only when shown or stated.

🔌 Function

The timer base produces timed electrical pulses as the flywheel magnets pass its trigger coils.

The power pack uses these signals to determine when each ignition coil should fire. The complete timer base also rotates through the spark-advance range as the throttle is opened.

Common signs of timer-base failure:

• No spark on one or more cylinders

• Intermittent spark loss

• Spark disappears as the engine warms

• Engine starts but will not accelerate correctly

• Misfire at a repeatable engine speed

• Incorrect or unstable ignition timing

• Engine will not achieve full spark advance

• Trigger resistance is outside specification

• Cracked or deteriorated wiring

• Timer base binds and does not rotate freely

Recommended checks before installation:

• Compare all wire colours and electrical connectors

• Test resistance between the specified trigger wires

• Check trigger output using a peak-reading adaptor where required

• Inspect the timer-base bearing surface

• Confirm free movement through the complete spark-advance range

• Inspect the flywheel magnets and key

• Test the stator, power pack and ignition coils before condemning the timer base

• Perform the factory link-and-synchronisation procedure after installation

📦 Condition

• Genuine OMC, Evinrude or Johnson used part

• Pre-owned electrical component

• Cosmetic marks, wire ageing and light oxidation may be present

• Electrical testing before installation is strongly recommended

• Included wiring, linkage and hardware are limited to those shown or described

• Supplied in protective or equivalent packaging