HOW TO RESOURCE: Checking The Boliy Pro3600Si Spark Plug |
Checking Boliy Spark Plug For Proper Generator Operation |
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Allow engine to cool before removing plug! This will reduce the chances of thread damage.
Make sure that no dirt enters cylinder with plug removed. If area around plug is dirty, try cleaning with a small paint brush before removal.
CHECKING CONDITION OF ELECTRODES
If the engine is operating properly, spark-plug electrodes will be tan or light grey in color.
WHAT IF PLUG ELECTRODES ARE COVERED IN SOOT?
Soot is characterized by a dry black appearance. Soot means that your carburetor is mixing too much fuel with the air it draws in. To fix it, you will need to adjust the carburetor's fuel-mixture screw.
On the Boliy Pro3600si digital generator, the fuel-mixture screw is found on the back side of the carburetor. It faces upward at a 45-degree angle. Accessing it will require some disassembly.
To lean out air/fuel mixture, screw should be turned clockwise. Make sure before adjusting, that engine has reached normal operating temperature.
IT'S A GOOD IDEA TO CHECK AIR-CLEANER BEFORE ADJUSTING CARB
Before you adjust the carburetor, check the air-cleaner element. An element that is dirty, or saturated in oil or gasoline can restrict the flow of air and cause your engine to operate rich. If element is compromised, clean thoroughly in tap water, allow to dry, and test engine again before adjusting carburetor.
ALSO CHECK ADJUSTMENT OF CHOKE CABLE
If a choke cable is poorly adjusted, the choke will not open as it should during normal engine operation. This will restrict air flow, and affect the air/fuel mixture. Before adjusting the carburetor, remove your air filter so that the choke plate is in view, and verify that it fully opens with the choke lever pushed in.
SUPPOSE THAT PLUG ELECTRODES ARE SEARED OR BURNED?
A whitish-grey or seared appearance means that the carburetor's air/fuel mixture is too lean. This will also require you to adjust the air-mixture screw. Turn screw counterclockwise.
Before adjusting, be sure that engine has reached normal operating temperature.
After running the generator, this is what a spark plug will look like with the correct fuel mixture.
The following two images show a fouled spark plug which indicates the fuel mixture is too rich and must be leaned. To lean the fuel mixture, turn the fuel mixture screw clockwise.
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