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76681A1 96452A4 Mercury Trigger | Genuine Used Part

76681A1 96452A4 Mercury Trigger | Genuine Used Part

$90.00 AUD
$90.00 AUD
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Low stock: 2 left

🔧 Product Description

Genuine Used Mercury Mariner Four-Cylinder Straight-Arm Trigger - Part Numbers: 76681A1 and 96452A4

A genuine pre-owned Mercury and Mariner four-cylinder trigger assembly used on selected 30 Jet and 40HP through 85HP two-stroke outboards.

Mercury 76681A1 supersedes to 96452A4 within the straight-linkage-arm trigger family. The assembly generates ignition-timing pulses and rotates mechanically as the throttle linkage advances the ignition timing.

⚙️ Key Features

  • Genuine Mercury or Mariner used trigger
  • Earlier OEM reference 76681A1
  • Later service reference 96452A4
  • Four-cylinder straight-arm configuration
  • Suitable for selected 30 Jet through 85HP engines
  • CDI and Sierra replacements available

🚤 Compatibility

Commonly used on selected

  • Mercury 30 Jet
  • Mercury 40HP
  • Mercury 40 Jet
  • Mercury 45HP
  • Mercury 50HP
  • Mercury 55HP
  • Mercury 75HP
  • Mercury 80HP
  • Mercury 80 Jet
  • Mercury 85HP
  • Compatible Mariner four-cylinder engines

Representative application period

  • Approximately 1976-1997, depending on horsepower and serial number

Important fitment note

  • This is the straight-arm trigger configuration.
  • Engines requiring a hooked linkage arm use a different trigger family.
  • Confirm the arm shape, wire colours and connector before ordering.
  • Four-cylinder and three-cylinder Mercury triggers are not interchangeable.

🔌 Function

The trigger identifies crankshaft position and sends timed pulses to the switchbox.

Its movement under the flywheel changes ignition timing as the throttle linkage advances.

⚠️ Common Signs of Failure

  • No spark on one or more cylinders
  • Intermittent ignition
  • Engine misfires under load
  • Spark disappears when warm
  • Engine will not reach maximum timing
  • Trigger arm binds
  • Wires crack near the rotating plate
  • Peak trigger voltage is below specification

🛠️ Service Notes

Recommended checks before installation

  • Confirm the straight-arm design
  • Test each trigger circuit
  • Inspect the switchbox and stator
  • Check the flywheel key
  • Confirm free trigger movement
  • Route wires clear of the flywheel
  • Set maximum timing after installation

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 73372A1 - Earlier trigger reference
  • 73410A1 - Earlier trigger reference
  • 76681A1 - Earlier OEM trigger
  • 77000A2 - Related trigger reference
  • 96452A1 - Later trigger reference
  • 96452A4 - Later service assembly
  • 96452A5 - Related later reference

OEM / Related Numbers

  • 76681A1
  • 96452A4
  • 73372A1
  • 73410A1
  • 77000A2
  • 96452A1
  • 96452A5
  • Trigger Type: Four-Cylinder Straight Arm

Aftermarket / Verified Equivalents

  • CDI Electronics: 134-6452
  • Sierra: 18-99390
  • Aftermarket straight-arm trigger replacing 76681A1
  • Aftermarket trigger replacing 96452A4 / 96452A5

📦 Condition

  • Genuine Mercury or Mariner used part
  • Pre-owned electrical component
  • Wire and linkage wear may be present
  • Electrical testing before installation is strongly recommended
  • Supplied in protective or equivalent packaging
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