WH125 Stator Trigger

Brand: Mortch Motor
Product Code: MIWH125-3043

Product Viewed: 161

Availability: In Stock

Weight: 0.03kg

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WH125/150 Stator Trigger / Pickup Coil

🔧 Trigger Coil · Pulse Coil · Ignition Pickup

Fits WH125cc / 150cc Engines · Magneto Ignition System

📋 Product Overview

This is the Magneto Stator Ignition Pickup Trigger for WH125cc / 150cc engines, also known as a trigger coil or pulse coil. The trigger coil is an essential component of the engine's ignition system, mounted on the stator and working together with the trigger tab on the flywheel rotor.

As the engine rotates, the trigger tab on the rotor passes by the trigger coil, generating a small voltage signal. This signal is sent to the CDI unit, which determines the ignition timing and triggers the ignition coil to produce a high-voltage spark. A faulty or degraded trigger coil can cause incorrect ignition timing, hard starting, poor acceleration, and other issues.

✨ Key Functions: Generates ignition trigger signal · Controls ignition timing · Works with CDI unit

📐 Specifications

Length

27mm

Width

22mm

Height

20mm

Mounting Hole Spacing

30mm

Length	Width	Height	Mounting Hole Spacing
27mm	22mm	20mm	30mm

🛵 Compatible Models

This trigger coil primarily fits the following engines:

WH125cc Engine (Wangye 125cc)
WH150cc Engine (Wangye 150cc)
Other GY6-type engines using the same trigger coil specifications

Compatible vehicles include:

Various scooters using WH125/150 engines
Some GY6 125cc/150cc scooters
ATVs, go-karts, and other vehicles using Wangye engines

📌 Compatibility Note: This trigger coil has specifications: length 27mm, width 22mm, height 20mm, mounting hole spacing 30mm. Before purchasing, please verify that your original trigger coil dimensions match, or confirm your engine is a WH125/150 series.

⚡ Function of Trigger Coil

🔄 Signal Generation

When the trigger tab on the flywheel passes the trigger coil, it induces a small voltage pulse signal.

⚡ Ignition Trigger

This signal is sent to the CDI unit, telling it the piston position so it can trigger the ignition coil at the correct time.

⏱️ Timing Control

The timing of the trigger signal determines the ignition advance angle, directly affecting power output and combustion efficiency.

🔧 RPM Sensing

The CDI also uses the frequency of trigger signals to sense engine RPM and adjust ignition characteristics.

⚠️ Trigger Coil Failure Symptoms

No Start: Engine shows no signs of ignition, no spark.
Hard Starting: Requires multiple attempts to start, or stalls easily after starting.
Rough Idle: Engine vibrates at idle, unstable RPM.
Misfiring During Acceleration: Hesitation or stumbling during acceleration.
Incorrect Ignition Timing: Backfiring, popping, or lack of power.
Multimeter Test: Trigger coil resistance is abnormal (should typically be in the hundreds of ohms range).

Testing Method: Use a multimeter on resistance mode to measure across the trigger coil terminals. Normal resistance is typically between 50-500 ohms (consult your service manual for exact specs). If resistance is infinite or significantly out of range, the coil is faulty.

🔧 Installation Tip

1. Replacing the trigger coil requires removing the magneto cover and flywheel/rotor. Professional installation is recommended.
2. Clean the mounting surface before installation, ensuring no debris on the stator.
3. Install the new trigger coil in the original position, secure with bolts, and ensure proper air gap between coil and rotor (typically 0.3-0.8mm).
4. Connect the wiring connector, ensuring good contact.
5. When installing the flywheel/rotor, align the keyway and tighten the nut to specified torque.
6. After installation, test starting and idle to confirm normal ignition operation.

⚠️ Important Notice: This is a WH125/150 engine magneto trigger coil with specifications: length 27mm, width 22mm, height 20mm, mounting hole spacing 30mm. It fits WH125cc/150cc engines and other GY6-type engines using the same trigger coil. Please verify your original dimensions before purchasing. Images are for reference only. The actual product may vary.

🔧 Compatibility Notice

Please verify that this part fits your specific vehicle model and year. Many vehicles share similar names but use different components depending on year or market region.
We strongly recommend cross-checking with your vehicle's owner's manual or contacting us for confirmation before placing your order.

📄 Product Disclaimer

Product images, measurements, and descriptions are for reference only. Slight variations in color or appearance may occur due to manufacturing batches or photography lighting—functional specifications remain identical to the ordered part.
Professional installation is mandatory. Mortch Motor assumes no liability for damages, injuries, or losses resulting from improper installation, misuse, unauthorized modification, or abnormal operation.

💰 Import Duties & Taxes

All listed prices EXCLUDE shipping costs, import duties, taxes, and customs clearance fees. These charges (if applicable) are determined and collected by your local customs authority and are solely the buyer's responsibility.
In case of return due to unpaid duties/taxes or refusal to clear customs, the buyer shall bear the original shipping cost, return shipping fees, and any associated administrative charges deducted from the refund.

📌 Order Confirmation: By completing your purchase, you acknowledge that you have read, understood, and agreed to all terms above. For any questions, please contact our support team prior to ordering.