# 7283A2 7283A3 Mercury Trigger | Genuine Used Part

🔧 Product Description

  

Genuine Used Mercury Mariner 7.5HP / 9.8HP Twin-Cylinder Trigger Plate - Part Numbers: 7283A2 and 7283A3

  

A genuine pre-owned Mercury and Mariner trigger-plate assembly for selected 7.5HP and 9.8HP twin-cylinder two-stroke outboards.

  

Mercury part number 7283A2 supersedes to 7283A3. The trigger is mounted beneath the flywheel and rotates with the spark-advance linkage while producing the timing signals used by the ignition system.

  

⚙️ Key Features

  

• Genuine Mercury or Mariner used trigger plate

• Earlier reference 7283A2

• Later service reference 7283A3

• Designed for selected 7.5HP and 9.8HP twin-cylinder engines

• Mechanical spark-advance configuration

• Professionally remanufactured replacement may be available

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 7283A2 - Earlier trigger housing assembly

• 7283A3 - Later functional replacement

  

OEM / Related Numbers:

  

• 7283A2

• 7283A3

• 338-7283A2

• 338-7283A3

• Related assembly reference: 5286A6

• OEM Description: Trigger Plate

• OEM Description: Trigger Housing Assembly

  

Aftermarket / Verified Equivalents:

  

• CDI Electronics remanufactured reference: R338-7283A3

• Professionally rebuilt trigger plate replacing 7283A2 / 7283A3

• No verified new-production direct aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury 7.5HP two-cylinder outboards

• Mercury 9.8HP two-cylinder outboards

• Mariner equivalents using the Mercury ignition system

• Manual-start and electric-start applications where the listed trigger is specified

  

Typically suits:

  

• Selected 7.5HP engines from approximately 1975-1985

• Selected 9.8HP engines from approximately 1975-1985

• Serial-number-controlled United States, Canadian, Australian and European models

  

Important fitment note:

  

• Confirm 7283A2 or 7283A3 on the original trigger.

• Similar small Mercury engines may use a different stator, trigger or breaker-point ignition system.

• Compare the linkage arm, wiring and mounting diameter.

  

🔌 Function

  

The trigger produces ignition-timing pulses and rotates to advance or retard spark timing as throttle position changes.

  

Common signs of failure:

  

• No spark on one or both cylinders

• Intermittent spark

• Difficult starting

• Misfire under acceleration

• Engine will not reach full timing advance

• Trigger wiring is cracked

• Plate binds under the flywheel

• Spark disappears when warm

  

Recommended checks before installation:

  

• Compare the trigger and linkage with the original

• Test resistance and peak output

• Inspect the stator, switchbox and coils

• Check the flywheel key and magnets

• Confirm free spark-advance movement

• Set ignition timing and throttle synchronisation

  

📦 Condition

  

• Genuine Mercury or Mariner used part

• Pre-owned electrical component

• Cosmetic marks, wire ageing and oxidation may be present

• Electrical testing before installation is strongly recommended

• Supplied in protective or equivalent packaging

## Details

- **Price:** 40.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Triggers | Ignition Triggers & Pickup Coils

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 40.00 AUD | In stock |

## Images

- 7283A2 7283A3 Mercury Trigger | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/7283a2-7283a3-mercury-trigger-genuine-used-part)
> Updated: 2026-07-12