Outdoor Power Equipment, Small Engine, Lawn Mower Repairs, Troubleshooting and Safety
Removal of Carb 790120 (w/ primer system) from Briggs & Stratton 128600 series engine (128602 0304)
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- #1. Air cleaner cover
Remove air cleaner cover by loosening two 5/16 screws (#1).
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- #2. Air filter
Lift out air filter (#2).
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- #3. Disconnect crankcase breather tube
Remove the crankcase breather tube (#3).
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- #4. Remove air cleaner base
Remove two screws to remove the air cleaner base (#4).
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- #5. Remove air cleaner base
#5 shows the air cleaner gasket on the air cleaner base. This gasket is critical to the operation of the primer.
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- #6. Remove fuel line from carb
Remove fuel from carb (#6).
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- #7. Carb and links without air cleaner
The next photo (#7) shows the carburetor and linkages after removal of air cleaner base and fuel line.
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- #8. Tilt carb to slip off throttle link
Remove two carb mounting screws, separate carb and gaskets from engine control bracket, tilt carb to slip off throttle link (#8).
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- #9. Carb gaskets as removed from engine
Carb with gaskets between it and engine control bracket (#9).
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- #10. Engine control bracket without carb
Engine control bracket to which carb mounts. Throttle link visible. (#10).
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- #11. View of carb bowl in place on engine
The carb bowl can be accessed without removing carb from engine (#11) for quick cleaning or inspection. Use a short offset 1/2 in. box wrench.
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- #12. Carb bowl removed while carb on engine
Carb bowl removed with carb in place on engine (#12).
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- #13. View of carb linkages
Another view of carb links (#13). The tang to which the extension spring is attached should be bent to adjust engine speed. Bend it outward to increase speed.