Topteng Ignition Pick Up Pulse Coil Instruction Manual
Model: AM118220
1. Product Overview
The Topteng Ignition Pick Up Pulse Coil (Model AM118220) is a critical component designed for the ignition system of specific John Deere Lawn and Garden Tractors. This coil is responsible for generating the timing signal required by the ignition module to fire the spark plugs at the correct moment, ensuring efficient engine operation.
It serves as a direct replacement part, engineered for reliable performance and easy installation.
Image 1.1: Front view of the Topteng Ignition Pick Up Pulse Coil, showing the main coil body, mounting brackets, and connected wiring harness with a white connector.
2. Compatibility
This ignition pick up pulse coil is specifically designed for the following John Deere Lawn and Garden Tractor models:
- John Deere 425
- John Deere 445
- John Deere 455
Replacement Part Number: AM118220 (PC2351)
Important: Please confirm the exact year and model of your vehicle before ordering to ensure proper fitment.
3. Key Features
- Direct replacement for the original equipment manufacturer (OEM) part.
- Plug-and-play design for straightforward installation.
- Engineered for stable performance and high reliability.
- All units are tested for performance prior to shipment.
4. Package Contents
The package includes:
- 1x Topteng Ignition Pick Up Pulse Coil (AM118220)
5. Installation (Setup)
Installation of the ignition pick up pulse coil requires basic mechanical knowledge and tools. If you are unsure about any step, it is recommended to consult a qualified technician or refer to your tractor's service manual.
Safety Precautions:
- Always disconnect the battery's negative terminal before beginning any electrical work.
- Ensure the engine is cool to the touch before working on it.
- Wear appropriate personal protective equipment (PPE), such as gloves and eye protection.
Installation Steps:
- Locate the Existing Coil: Identify the current ignition pick up pulse coil on your John Deere tractor. It is typically located near the flywheel or crankshaft, often behind a cover.
- Disconnect Wiring: Carefully disconnect the electrical connector from the old coil. Note the routing of the wires.
- Remove Old Coil: Unscrew and remove the mounting bolts securing the old coil. Keep these bolts as they may be reused.
- Install New Coil: Position the new Topteng ignition pick up pulse coil in the same location as the old one. Align the mounting holes.
- Secure New Coil: Reinstall the mounting bolts and tighten them securely. Ensure the coil is firmly in place and does not wobble.
- Connect Wiring: Reconnect the electrical connector to the new coil. Ensure a snug and secure connection.
- Reassemble: Replace any covers or components that were removed during the process.
- Reconnect Battery: Reconnect the negative terminal of the battery.
- Test: Start the tractor and check for proper engine operation. Listen for any unusual noises or signs of malfunction.
Image 5.1: Top view of the coil, showing the mounting points and the wire connection.
Image 5.2: Side view of the coil, highlighting the compact design and wire exit point.
6. Operation
The ignition pick up pulse coil is an integral part of the tractor's ignition system. Once installed, it operates automatically as the engine crankshaft rotates. It generates a precise electrical pulse each time a specific point on the crankshaft or flywheel passes by it. This pulse is then sent to the ignition module, which uses this timing information to determine when to send a high-voltage signal to the spark plug, initiating combustion.
Proper functioning of this coil is essential for consistent engine starting, smooth idling, and efficient power delivery.
7. Maintenance
The Topteng Ignition Pick Up Pulse Coil is designed to be a maintenance-free component. However, regular inspection of the surrounding area can help ensure its longevity and proper function:
- Wiring Inspection: Periodically check the wiring harness connected to the coil for any signs of fraying, cracks, or damage. Ensure the connector is clean and securely seated.
- Cleanliness: Keep the area around the coil free from excessive dirt, debris, oil, or moisture, which can potentially interfere with its operation or cause corrosion.
- Mounting Security: Occasionally verify that the coil remains securely mounted and that its bolts are tight.
If the coil or its wiring appears damaged, replacement is recommended.
8. Troubleshooting
If you experience issues with your tractor's ignition system, the pick up pulse coil could be a contributing factor. Here are some common symptoms and troubleshooting steps:
| Symptom | Possible Cause | Solution |
|---|---|---|
| Engine cranks but won't start | Faulty pulse coil, wiring issue, or other ignition component failure. | Check for spark at the spark plug. Inspect coil wiring for damage. Test coil resistance (refer to tractor service manual for specifications). Replace coil if faulty. |
| Intermittent engine misfires or rough running | Intermittent signal from pulse coil, loose connection, or other ignition/fuel issue. | Ensure all connections are secure. Inspect coil and wiring for signs of heat damage or corrosion. Consider professional diagnosis. |
| No spark | Completely failed pulse coil, broken wire, or failed ignition module. | Verify power to the ignition system. Test the pulse coil for continuity and resistance. If the coil tests good, investigate the ignition module or other components. |
For detailed diagnostic procedures, always refer to the official service manual for your specific John Deere tractor model.
9. Specifications
| Attribute | Value |
|---|---|
| Brand | Topteng |
| Model Number | AM118220 |
| Type | Ignition Pick Up Pulse Coil |
| Vehicle Service Type | Tractor |
| Installation Type | Bolt-On |
| Number of Wires | 2 |
| Number of Plugs | 1 |
| Number of Pins | 2 |
| Product Dimensions (L x W x H) | 7.09 x 5.12 x 1.97 inches |
| Item Weight | 0.1 Kilograms (3.52 ounces) |
10. Warranty and Support
For information regarding warranty coverage or technical support for your Topteng Ignition Pick Up Pulse Coil, please refer to the seller's policies or contact Topteng directly through their official channels. Details are typically available on the product's purchase page or the manufacturer's website.
For general inquiries or to visit the Topteng store, you may refer to the following link: Topteng Official Store
