Briggs & Stratton 398811 Ignition Coil Instruction Manual

Product Overview

This manual provides instructions for the Briggs & Stratton 398811 Ignition Coil. This component is designed for use with 7-16 HP horizontal and vertical single-cylinder engines, serving as a direct replacement for original ignition systems, including those with points and condensers. It ensures reliable spark delivery for engine operation.

Image: The Briggs & Stratton 398811 Ignition Coil kit, including the coil unit, spark plug wire, terminal, and mounting hardware.

Key Features

• Genuine Briggs & Stratton part number 492341 (interchangeable with 398811).
• Compatible with 7-16 HP horizontal and vertical single-cylinder engines.
• Replaces older magneto, points, and condenser ignition systems.
• Includes necessary components for installation.

Compatibility

This ignition coil is compatible with various Briggs & Stratton engines, primarily those found in lawn mowers and other agricultural or construction machinery requiring 7-16 HP single-cylinder engines. Refer to your engine's model and type numbers for exact compatibility.

Part Number Compatibility:

• 1212-6004
• 298968, 298968-A
• 395326, 395326-A
• 395492, 395492-A
• 398265, 398265-A
• 398811, 398811-A
• 440-417, 440-417-A, 440417, 440417-A
• COIL-0111, COIL-0111-A
• ED-1055
• PT15339, PT15339-A

Compatible Engine Models (Examples):

• 176432
• 192400, 196400, 197400, 19E400, 19G400
• 226400
• 250400, 252417
• 326437

Safety Information

Always prioritize safety when working with engine components. Failure to follow safety precautions can result in serious injury or damage to equipment.

• Disconnect the spark plug wire: Before performing any service, ensure the spark plug wire is disconnected to prevent accidental engine starting.
• Wear appropriate personal protective equipment (PPE): This includes safety glasses and gloves.
• Allow engine to cool: Ensure the engine is cool before handling components to avoid burns.
• Refer to engine service manual: Consult your specific engine's service manual for detailed disassembly and reassembly procedures.

Installation Instructions

This section outlines the general steps for installing the Briggs & Stratton 398811 Ignition Coil. Specific engine configurations may vary, so always refer to your engine's service manual for precise instructions.

Tools Required:

• Wrenches/Sockets
• Screwdrivers
• Flywheel puller (may be required if removing flywheel)
• Feeler gauge or ignition coil gapping card (included)
• Wire cutters (if removing old points/condenser wires)

Preparation:

1. Ensure the engine is off and cool.
2. Disconnect the spark plug wire from the spark plug.
3. Remove any engine shrouds or covers necessary to access the existing ignition coil and flywheel area.

Installation Steps:

1. Remove Old Ignition Components: If replacing an older system with points and a condenser, you may choose to remove these components. This typically involves removing the flywheel using a flywheel puller. Alternatively, you can leave the old points and condenser in place, cutting their wires as close as possible and securing them away from moving parts. The kit includes plugs to seal any holes left by removed wires.
2. Mount the New Ignition Coil: Position the new ignition coil unit on the engine block. Ensure the pickup side is correctly oriented (usually towards the left when facing the engine, with the spark plug wire towards the front).
3. Set the Air Gap: Place the provided gapping card or a feeler gauge (typically 0.006-0.010 inches or 0.15-0.25 mm) between the ignition coil's laminations and the flywheel magnets. Loosen the coil mounting screws slightly, allowing the flywheel magnets to pull the coil into contact with the gapping card.
4. Tighten Mounting Screws: While holding the coil firmly against the gapping card and flywheel, tighten the mounting screws. Do not overtighten, as engine blocks are often aluminum.
5. Connect Wiring: Connect the kill switch wire from the new coil to the engine's kill switch terminal. The kit includes a new spark plug connector if you need to shorten the spark plug wire.
6. Reassemble: Reinstall any removed engine shrouds or covers. Reconnect the spark plug wire to the spark plug.

Image: The ignition coil and associated parts, illustrating the components involved in the installation process.

Operation

Once correctly installed, the Briggs & Stratton 398811 Ignition Coil operates automatically as an integral part of the engine's ignition system. It generates the high voltage required to create a spark at the spark plug, initiating combustion within the engine cylinder. No user interaction is required for its operation after installation.

Maintenance

The Briggs & Stratton 398811 Ignition Coil is designed to be a maintenance-free component once installed. Regular inspection of the spark plug wire for cracks or damage is recommended. Ensure all connections remain secure. No internal servicing of the coil unit is required or possible.

Troubleshooting

If your engine experiences ignition-related issues after installing the new coil, consider the following:

• No Spark:
  • Verify all wiring connections are secure.
  • Check the air gap between the coil and flywheel. Readjust if necessary.
  • Inspect the spark plug for fouling or damage. Replace if needed.
  • Ensure the kill switch wire is not grounded prematurely.
• Weak or Intermittent Spark:
  • Recheck the air gap. An incorrect gap can lead to weak spark.
  • Inspect the spark plug wire for cuts or abrasions that could cause arcing.
  • Ensure the flywheel magnets are clean and free of debris.
• Engine Runs Rough or Sputters:
  • While often fuel-related, ignition issues can cause this. Check for consistent spark.
  • Ensure the coil is securely mounted and not vibrating.

If troubleshooting steps do not resolve the issue, consult a qualified service technician or contact Briggs & Stratton customer support.

Specifications

Warranty Information

The Briggs & Stratton 398811 Ignition Coil is covered by a 90-day warranty for defects in material and workmanship. This warranty applies from the date of purchase. For warranty claims or further details, please retain your proof of purchase and contact Briggs & Stratton customer support.

Customer Support

For technical assistance, parts inquiries, or warranty support, please contact Briggs & Stratton directly. You can find contact information and additional resources on the official Briggs & Stratton website.

Image: The packaging for the Briggs & Stratton 398811 Ignition Coil, indicating it is an original service part.