1. Introduction
This manual provides essential information for the proper use and maintenance of the Generac 5664 Air-Cooled Home Standby Generator Maintenance Kit. Regular maintenance is crucial for ensuring the optimal performance and longevity of your Generac air-cooled standby generator.
Scheduled maintenance is recommended at every 200 hours of operation or every 2 years, whichever comes first. In environments with high dust levels, more frequent maintenance may be necessary.
2. Compatibility
The Generac 5664 Maintenance Kit is specifically designed for Generac air-cooled standby generators with a power output of 13kW to 17kW. It is compatible with generators equipped with 760cc or 990cc Generac OHVI engines, manufactured between 2008 and 2012.
Before performing maintenance, verify your generator's model and engine specifications to ensure compatibility with this kit.
3. Kit Contents
The Generac 5664 Maintenance Kit includes the following components necessary for a complete maintenance service:
- Air Filter
- Oil Filter
- Spark Plugs (Quantity: 2)
- Oil Funnel (Paper)
- Chamois/Wipe Cloth
- Instruction Manual (this document)
- Maintenance Reminder Sticker
Image 1: Contents of the Generac 5664 Maintenance Kit, including air filter, oil filter, spark plugs, and other accessories.
Important Note: Engine oil is not included in this kit and must be purchased separately. Refer to your generator's owner's manual for the recommended oil type and capacity.
4. Maintenance Procedures
The following procedures outline the steps for performing routine maintenance using the Generac 5664 Maintenance Kit. Always ensure the generator is turned off, cooled down, and disconnected from any power source before beginning maintenance.
4.1. Oil Change
- Locate the oil drain plug on your generator's engine.
- Place a suitable container beneath the drain plug to collect used oil.
- Remove the drain plug and allow all old oil to drain completely.
- Replace the drain plug and tighten it securely.
- Remove the old oil filter (see Section 4.2 for details).
- Using the provided oil funnel, add the recommended type and amount of new engine oil. Refer to your generator's manual for exact specifications.
- Check the oil level using the dipstick and adjust as necessary.
- Properly dispose of used oil and the old oil filter according to local regulations.
4.2. Oil Filter Replacement
- After draining the old oil, locate the oil filter.
- Use an oil filter wrench to loosen and remove the old oil filter. Be prepared for residual oil to spill.
- Apply a thin film of new engine oil to the rubber gasket of the new oil filter.
- Thread the new oil filter onto the engine by hand until the gasket makes contact with the engine block.
- Tighten the filter an additional 1/2 to 3/4 turn by hand. Do not overtighten.
4.3. Air Filter Replacement
- Locate the air filter housing on your generator.
- Open the air filter housing cover.
- Remove the old air filter. Note its orientation.
- Insert the new air filter from the kit, ensuring it is seated correctly.
- Close and secure the air filter housing cover.
4.4. Spark Plug Replacement
- Locate the spark plug wires and carefully disconnect them from the spark plugs.
- Use a spark plug wrench to remove the old spark plugs.
- Inspect the new spark plugs for correct gap. Refer to your generator's manual for the specified gap. Adjust if necessary.
- Thread the new spark plugs into the engine by hand to prevent cross-threading.
- Tighten the spark plugs with a wrench. Do not overtighten.
- Reconnect the spark plug wires firmly.
5. Specifications
| Feature | Detail |
|---|---|
| Brand | Generac |
| Model Name | 5664 |
| Compatible Generator Wattage | 13kW - 17kW |
| Compatible Engine Displacement | 760cc / 990cc Generac OHVI engines |
| Compatible Generator Manufacturing Years | 2008 - 2012 |
| Item Weight | 1.6 Pounds (approx.) |
| Product Dimensions | 9 x 9 x 5 inches (approx.) |
| UPC | 696471056648 |
6. Troubleshooting
This section addresses common issues related to maintenance kit components or the maintenance process itself. For general generator troubleshooting, refer to your generator's primary owner's manual.
6.1. Incorrect Spark Plugs
Some users have reported receiving spark plugs that differ from their generator's original specifications (e.g., RC14YC4 instead of RC12YC). Always verify the correct spark plug type and gap for your specific generator model in its owner's manual before installation. Using incorrect spark plugs can lead to poor engine performance or damage.
6.2. Generator Not Starting After Maintenance
- Check Oil Level: Ensure the oil level is correct. Too much or too little oil can prevent starting.
- Spark Plug Wires: Verify that spark plug wires are securely reconnected.
- Fuel Supply: Confirm the generator has adequate fuel and the fuel valve is open.
- Air Filter Installation: Ensure the air filter is correctly seated and the housing is properly closed.
7. Support
For further assistance, technical support, or to inquire about specific generator models and their maintenance requirements, please contact Generac customer service or visit the official Generac website. Always refer to your generator's specific owner's manual for detailed operational and maintenance instructions.
Generac's official website: www.generac.com
