Craftsman Mower Starts but Won't Stay Running - FIXED!

Step-by-Step Tutorial: Fixing a Craftsman Mower that Starts but Won't Stay Running

Materials Needed:

• Craftsman mower with Kohler courage 149 cc engine
• Screwdriver (Phillips and slotted)
• Ten millimeter wrench
• Torx screws
• Carburetor cleaner
• Main jet cleaner
• Wire brush
• Fuel stabilizer
• Fresh fuel (91 octane ethanol-free)
• Gorilla Tape

Step 1: Identify the Issue

• If your Craftsman mower starts but shuts off right away, the main jet in the carburetor may have gunk built up in it, causing a fuel delivery issue.

Step 2: Remove the Carburetor

• Remove the air filter cover and disconnect the breather tube and fuel tank vent tube.
• Unscrew the Torx screws to separate the carburetor from the mechanism.

Step 3: Disassemble the Carburetor

• Clean the exterior of the carburetor.
• Remove the throttle back stop, pilot jet, and bowl using appropriate tools.
• Check for any gunk or debris in the carburetor components.

Step 4: Clean the Main Jet and Pilot Jet

• Use a slotted screwdriver to remove the main jet and clean it with a main jet cleaner.
• Clean the pilot jet using a piece of metal from a wire brush.
• Ensure that both jets are clear of any obstructions.

Step 5: Reassemble the Carburetor

• Put the carburetor components back together in the reverse order of disassembly.
• Ensure all parts are clean and properly reattached.

Step 6: Check the Fuel System

• Remove the fuel line clamp and drain the fuel tank.
• Check the inline fuel filter for any debris or blockages.
• Clean the fuel tank and filter if necessary.

Step 7: Reinstall the Carburetor and Fuel System

• Reinstall the carburetor and connect the fuel lines.
• Refill the fuel tank with fresh, stabilized fuel.
• Use Gorilla Tape to secure the airbox cover and air filter.

Step 8: Test the Mower

• Start the mower and listen to how it runs.
• If the mower starts and runs smoothly, the issue has been resolved.

Step 9: Maintenance Tips

• Use fuel stabilizer in your fuel to prevent future issues.
• Regularly clean and maintain your mower's carburetor and fuel system to avoid similar problems in the future.

By following these steps, you should be able to fix the issue of your Craftsman mower starting but not staying running. Remember to perform regular maintenance to keep your mower in top condition.