All Generac Portable Generators Spark Plug Gap & Socket Size

Generac portable generators are great for providing power during outages, but if you don’t maintain them properly, they won’t work when you need them. One of the most important maintenance tasks is to make sure that the Spark Plug gap & Socket Size are correctly gapped and seated in their sockets.

In this guide, we will discuss all Generac portable generators spark plug gap and socket size. We will also provide some helpful tips on maintaining your generator, so it delivers reliable power when you need it most.

Overview of Generac Portable Generators Spark Plug Gap & Socket Size

The spark plug gap is a space between electrodes that helps regulate the amount of electricity flowing into the spark plug. The gap must be set correctly so that it doesn’t impede proper ignition performance or cause too much compression in the cylinder, leading to damage or an inefficient combustion process.

It is generally recommended to check and adjust your spark plug gap at least once yearly as part of routine maintenance.

Socket sizes are essential for ensuring that the spark plugs are properly secured in position while running. Most Generac portable generators use 21 mm metric-size sleeves, but again, it’s important to consult your owner’s manual before replacing any parts with incorrect specifications, as this can lead to damage and poor performance over time.

List Of All Generac Generators Spark Plug Gap & Socket Size

Generac GP17500E Generator

Type – RC14YC (Champion) or equivalent
Official part number – 0E7585A
Gap – 0.040″
Socket size – 5/8″ (16mm)

Generac GP15000E Generator

Type – RC14YC (Champion) or equivalent
Official part number – 0E7585A
Gap – 0.040″
Socket size – 5/8″ (16mm)

Generac XT8500EFI Generator

Type – F7RTC (Brand not specified) or equivalent
Official part number – 0K20670117
Gap – 0.028″ – 0.031″
Socket size – 13/16″ (21mm)

Generac XT8000EFI Generator

Type – F7RTC (Brand not specified) or equivalent
Official part number – 0K20670117
Gap – 0.028″ – 0.031″
Socket size – 13/16″ (21mm)

Generac XT8000E Generator

Type – N9YC (Champion) or equivalent
Official part number – 0J00620106
Gap – 0.028″ – 0.031″
Socket size – 13/16″ (21mm)

Generac XG8000E Generator

Type – RC14YC (Champion) or equivalent
Official part number – 0E7585
Gap – 0.030″
Socket size – 5/8″ (16mm)

Generac XC8000E (49ST/CSA & CARB) Generator

Type – RC12YC (Champion) or equivalent
Official part number – 0G0767B
Gap – 0.020″
Socket size – 5/8″ (16mm)

Generac GP8000E (49ST/CSA & 50ST) Generator

Type – F7TC (Bosch)
Official part number – 0J00620106
Gap – 0.028″−0.031″
Socket size – 13/16″ (21mm)

Generac GP7500E Generator

Type – N9YC (Champion) or equivalent
Official part number – 0J00620106
Gap – 0.028″−0.031″
Socket size – 13/16″ (21mm)

Generac XC6500E Generator

Type – RC12YC (Champion) or equivalent
Official part number – 0G0767B
Gap – 0.020″
Socket size – 5/8″ (16mm)

Generac XC6500 (49ST/CSA & CARB) Generator

Type – RC12YC (Champion) or equivalent
Official part number – 0G0767B
Gap – 0.020″
Socket size – 5/8″ (16mm)

Generac GP6500E (49ST/CSA) Generator

Type – F7TC (Bosch) or equivalent
Official part number – 0J00620106
Gap – 0.028″−0.031″
Socket size – 13/16″ (21mm)

Generac GP6500 (49ST & 50ST) Generator

Type – LD F7TC (NHSP) / N9YC (Champion) or equivalent
Official part number – 0G84420101
Gap – 0.028″−0.031″
Socket size – 13/16″ (21mm)

Generac RS5500 Generator

Type – Champion N9YC
Official part number – 0J00620106
Gap – 0.028″−0.031″
Socket size – 13/16″ (21mm)

Generac GP5500 Generator

Type – LD F7TC (NHSP) / N9YC (Champion) or equivalent
Official part number – 0G84420101
Gap – 0.028″−0.031″
Socket size – 13/16″ (21mm)

Generac GP3600 (49ST/CSA & 50ST) Generator

Type – F7TC (Brand not specified)
Official part number – 0J00620106
Gap – 0.030″
Socket size – 13/16″ (21mm)

Generac GP3500iO Inverter Generator

Type – F7TC / F7RTC / BPR6ES (Brands not specified)
Official part number – 0J00620106
Gap – 0.024″ – 0.028″
Socket size – 13/16″ (21mm)

Generac IQ3500 Inverter Generator

Type – F7TC / F7RTC / BPR6ES (Brands not specified)
Official part number – 0J00620106
Gap – 0.024″ – 0.028″
Socket size – 13/16″ (21mm)

Generac GP3300 Generator

Type – F6TC (Torch) / BP6IS (NGK) / RN11YC (Champion) or equivalent
Official part number – 0H33750169
Gap – 0.030″ (0.76mm)
Socket size – 13/16″ (21mm)

Generac GP3300i Inverter Generator

Type – F7TC (Brand not specified) or equivalent
Official part number – 0K95530157
Gap – 0.024″-0.028″ (0.6-0.7mm)
Socket size – 13/16″ (21mm)

Generac GP3250 Generator

Type – F6TC (Torch) / BP6IS (NGK) / RN11YC (Champion) or equivalent
Official part number – 0H33750169
Gap – 0.030″ (0.76mm)
Socket size – 13/16″ (21mm)

Generac GP3000i Inverter Generator

Type – E6TC / E6RTC (Brands not specified)
Official part number – 0K95530157
Gap – 0.024″-0.028″ (0.6-0.7mm)
Socket size – 13/16″ (21mm)

Generac GP2500i Inverter Generator

Type – E6TC / E6RTC / BPR6HS (Brands not specified)
Official part number – 0K95530157
Gap – 0.024″-0.028″ (0.6-0.7mm)
Socket size – 13/16″ (21mm)

Generac GP2200i Inverter Generator

Type – E6TC / E6RTC / BPR6HS (Brands not specified)
Official part number – 0K95530157
Gap – 0.024″-0.028″ (0.6-0.7mm)
Socket size – 13/16″ (21mm)

Generac IX2000 Inverter Generator

Type – BPR6ES (NGK) or equivalent
Official part number – 0H8096
Gap – 0.030″ (0.76mm)
Socket size – 13/16″ (21mm)

Generac IQ2000 Inverter Generator

Generac IQ2000 Inverter Generator

Type – LD E6RTC (NHSP) or equivalent
Official part number – 0K91470141
Gap – 0.023″ – 0.027″ (0.6-0.7mm)
Socket size – 13/16″ (21mm)

By choosing high-quality spark plugs from trusted brands and scheduling regular maintenance checks, you can help to extend the lifespan of your generator and ensure that it continues to provide reliable power during outages and emergencies.

Also Read: Guide To All Honda Lawn Mowers Spark Plug Gap & Socket Size

Choosing the right Spark Plug Gap & Socket Size For Generac Generator

If you want to ensure that your Generac portable generator stays in good working condition, it’s essential to select the correct spark plug gap and socket size.

Here are the steps to take to get the right size.

Consult your owner’s manual: Every Generac portable generator model has its specific spark plug gap and socket size requirements. The owner’s manual contains all the information you need, so make sure to read it thoroughly before purchasing any replacement parts.
Measure the spark plug gap: Using a feeler gauge, measure the current spark plug gap and compare it to the recommended values in your owner’s manual. If the gap is too small or large, make sure to adjust it before replacing the spark plug.
Select the correct socket size: The spark plug must fit into the engine block securely, so make sure to select a socket size that is compatible with your Generac portable generator. If you’re unsure, consult your owner’s manual or contact a Generac representative for further assistance.

Spark Plug Gap

First, you’ll need to find out what type of spark plug your generator uses. Generac typically uses LD E6RTC (NHSP) or equivalent spark plugs.

The spark plug gap depends on your Generac generator model Commonly Generac uses the gap 0.023” – 0.027”.

Once you know this, you can look up the official part number for that type of plug – in this case, it is 0K91470141.

Socket Size Gap

Next, you’ll need to check the gap and socket size for the spark plug. The gap for a common spark plug gap is 13/16″ (21 mm) and depending on your model.

Also Read: All Honda Generators Spark Plug Gap And Socket Size Guide

Different Types of Spark Plugs For Generac Portable Generator

Generac portable generators are a reliable source of power for your home and business. But in order to keep it running smoothly, you need to replace the spark plugs as needed.

Here are some of the different types of Generac portable generator spark plugs you should know about. Generac portable generators use several different types of sparks on the model and engine type.

1. NHSP

If you own a Generac portable generator, it’s important to use the right type of spark plug to ensure optimal performance and longevity. NHSP spark plugs are an excellent choice for those seeking superior quality and reliability.

Generac Model And NHSP Spark Plug Type

Generac GP6500 (49ST & 50ST) Generator
NHSP – LD F7TC Gap – 0.028″−0.031″ Socket size – 13/16″ (21mm)

2. NGK

Generac uses the spark plug in their generators one of the most common types is the NGK spark plug, which is a high-quality, durable component designed specifically for small engines.

This type of spark plug features a copper core and a nickel alloy shell, which provides superior thermal conductivity and resistance to wear and erosion over time.

Generac Models And NGK Spark Plug Types

Generac IX2000 Inverter Generator
NGK – BPR6ES Gap – 0.030″ (0.76mm) Socket size – 13/16″ (21mm)

Generac GP3250 Generator
NGK – BP6IS Gap – 0.030″ (0.76mm) Socket size – 13/16″ (21mm)

3. Champion Spark Plugs

Another popular type of spark plug brand for Generac portable generators is the Champion Spark Plugs, which is designed to deliver reliable ignition performance in a variety of conditions.

This type of spark plug features a unique copper core and patented SAC-9 semi-conductor resistor that helps to reduce radio frequency interference and prevent misfires.

Generac Models And Champion Spark Plugs & Sochet Size Types

Generac GP3250 Generator
Champion – RN11YC Gap – 0.030″ (0.76mm) Socket size – 13/16″ (21mm)

Generac GP7500E Generator
Champion – N9YC Gap – 0.028″−0.031″ Socket size – 13/16″ (21mm)

Generac XC6500 (49ST/CSA & CARB) Generator
Champion – RC12YC Gap – 0.020″ Socket size – 5/8″ (16mm)

Generac XC6500 (49ST/CSA & CARB) Generator
Champion– RC12YC (Champion) Gap – 0.020″ Socket size – 5/8″ (16mm)

Generac XG8000E Generator
Champion – RC14YC Gap – 0.030″ Socket size – 5/8″ (16mm)

4. Bosch

Bosch spark plugs are designed to withstand extreme temperatures and conditions, making them ideal for use in a variety of environments. When replacing spark plugs in your Generac portable generator, be sure to consult your owner’s manual to ensure that you choose the correct socket size and gap measurement for your specific model.

Bosch Spark Plug Type

Generac GP6500E (49ST/CSA) Generator
Bosch – F7TC Gap – 0.028″−0.031″ Socket size – 13/16″ (21mm)

Also Read: All Ryobi Generators Spark Plug Gap and Socket Size Guide

Tips on Installing A New Spark Plug On Your Generac Portable Generators

Here are some tips to help you properly install and replace your Generac portable generator spark plugs.

Check your owner’s manual for the correct spark plug socket size and gap measurement
Determine the type of spark plug you need (e.g., NHSP, NGK, Champion, etc.)
Gently remove the old spark plug with a ratchet or wrench
Clean any dirt or debris from around the spark plug area
Insert the new spark plug in its place and secure it
Connect any wires that may have been disconnected
Start your generator to ensure proper installation
Adjust according to manufacturer instructions if necessary
Schedule regular maintenance checks on your Generac portable generator

To help keep it running smoothly. These simple steps can help ensure that your Generac portable generator continues to provide reliable power.

Common Problems Associated With Improperly Gapped Spark Plugs

Generac portable generators are a great source of power for home standby units and recreational activities. However, if the spark plugs become worn out or improperly gapped, it can cause problems with the generator’s performance.

Reduced engine power
Poor fuel economy
Difficulty starting the engine
Excessive vibration
Unusual noises coming from the engine

If you’re experiencing any of these issues, it may be time to replace your spark plug.

Also Read: A Guide To Yamaha Generators Spark Plug Gap and Socket Size

How to Properly Maintain Your Generac Portable Generator?

Maintaining your Generac portable generator’s spark plugs is an important part of keeping your generator running smoothly. Here are some tips on how to clean and maintain your spark plugs.

Maintaining your Generac portable generator and the spark plug is crucial to ensure optimal performance and longevity. Here are some essential tips to help you maintain your generator and spark plug effectively:

1. Regularly Change Spark Plugs When Required: Your Generac generator’s spark plug needs to be changed every 100 hours of operation. When changing spark plugs, be sure to consult your owner’s manual for the correct gap measurement and socket size.

2. Keep Air Filters Clean: Dirty air filters can cause your generator’s engine to run poorly or not start at all. Be sure to clean or replace air filters regularly in accordance with your owner’s manual.

3. Check Oil Regularly: Checking oil levels is key to the longevity and performance of your generator. Oil levels should be checked regularly and changed when necessary.

4. Check for Corrosion: Look over your Generac generator for any signs of corrosion. Inspect wiring and other components to ensure that everything is in good working order.

By following this maintenance checklist and regularly inspecting your generator, you can keep it running optimally and help extend its lifespan. We recommend scheduling a professional inspection every couple of years to ensure that all components are in good working order.

Also Read: All Predator Generators Spark Plug Gap and Socket Size Guide

Recommended Tools for Working on a Generac portable generator’s spark plugs

When it comes to working on your Generac portable generator’s spark plugs, having the right tools is essential to ensure accurate and safe installation.

The recommended tools for working on a Generac portable generator’s spark plugs include a spark plug socket, a torque wrench, and a spark plug gapping tool.

Spark Plug Socket: A spark plug socket is specifically designed to fit around the spark plug and allow for easy removal and installation. It’s important to use the correct size socket to avoid damaging the spark plug or the surrounding components.
Torque Wrench: A torque wrench is also important to ensure that the spark plug is tightened to the manufacturer’s specifications. Over-tightening or under-tightening can cause damage to the spark plug threads, which can lead to costly repairs.
Feeler Gauge: A spark plug gapping tool or a (Feeler Gauge) is used to measure the gap between the center and ground electrodes of the spark plug. This gap is critical to ensure proper ignition and engine performance.
Pliers Or A Wrench: It’s also recommended to have a set of pliers or a wrench handy to remove any wires or connectors that may be in the way. It’s important to disconnect the spark plug wires before removing the old spark plug to avoid accidental shock.

By having these recommended tools on hand and following proper installation procedures, you can help ensure that your Generac portable generator continues to provide reliable power during outages and emergencies.

Also Read: Guide To Champion Generators Spark Plug Gap and Socket Size

Safety Precautions When Working On Generator’s spark plugs

When working with AGenerator’s spark plugs, it is important to take safety precautions. Spark plugs can be dangerous and cause serious injury if not handled properly. Here are some tips for staying safe when working with generator spark plugs:

Make sure the generator is off and unplugged before attempting to change or inspect any spark plugs.
Wear protective gear such as gloves, goggles, and a face mask when handling spark plugs.
Use the correct size wrench to remove the old spark plug and install the new one.
Check your owner’s manual for the proper gap size of your specific model of the generator before installing a new spark plug.
Clean any dirt or debris from around the spark plug before installation to ensure proper operation of the generator.
Inspect all wiring connections for signs of wear or damage before reinstalling them onto the generator after changing out a spark plug.
After installation, test runs your generator to make sure it is running correctly and safely before using it again.

By following these safety precautions, you can help ensure that you stay safe while working with your Generac generator’s spark plugs.

Conclusion

Maintaining your GENERAC portable generator is essential if you want dependable power in an emergency situation.

When it comes time to replace or service your generator’s spark plugs, make sure that you select the right type, gap them correctly according to the specs provided by GENERAC, and use only approved sockets for installation/removal purposes.

Remember the tips and safety precautions outlined in this article to ensure that the job is done safely and correctly.

Regular maintenance of your generator’s spark plugs and other components, coupled with a professional inspection every couple of years, will help keep your portable generator running smoothly and efficiently.