Outdoor Power Equipment, Small Engine, Lawn Mower Repairs, Troubleshooting and Safety
Disassembly, Cleaning and Repair of Briggs and Stratton Pulsa Prime carb
Briggs carburetor part numbers 498811, 790206, 790218, 794161, 795475, 795477
used on selected Models 093902, 095902, 095982, 096902, 096982, 098902, 098982, 09B902, 09C902, 09C982, 09D902, 09D982, 09E902, 09E912, 09F902, 09G902, 09H902, 09J902, 09K902, 09L502, 09L702, 09L902, 09M902, 09S502, 09T502, 09T702, 09T802, 10A902, 10A912, 10A982, 10B902, 10C902, 10C982, 10D902, 10D912, 10D982, 10E902, 10F902, 10G902, 10H902, 10J902, 10J912, 10K902, 10L502, 10L602, 10L802, 10L902, 10M902, 10M912, 10N902, 10S902, 10T502, 10T602, 10T702, 10T802, 10T812, 120L02, 120T02
This is a Briggs and Stratton Pulsa-Prime tank-mounted carb on 10L900 Series Engine with vertical crankshaft (#1). Remove air filter by removing single center screw.
-
- #1. Briggs and Stratton Pulsa-prime carburetor 790206
There is a round fiber gasket between the air filter base and the carb. (#2).
-
- #2. Air filter gasket after removal of air filter
View of the area of the fuel tank where the carb mounts (#3).
-
- #3. View of tank w/o carb
View of the bottom of the carb (#4) showing the diaphragm and screens. The diaphragm goes next to the tank; the gasket goes next to the carb.
-
- #4. Diaphragm and gasket
Position of diaphragm spring (#5).
-
- #5. Diaphragm spring
The pickup tube screen must be clean (#6).
-
- #6. Pickup tube screen
-
-
- #7. Intake seal retainer
The seal retainer (#7) keeps the O-ring in position.
-
- #8. Intake O-ring seal
The intake seal O-ring (#8) fits over the intake pipe on the engine.
-
- #9. Throttle plate pulls out
The throttle plate can be pulled out of the throttle shaft (#9). The shaft can then be lifted out.
-
- #10. Removal of primer bulb
Press the tabs on each side of the primer bulb inward and outward (#10) to remove the bulb and its retainer.
-
- #11. Check valve seat
After removal of the primer bulb, the primer check valve can be accessed (#11). The rubber seat (green) can be pulled out with a small hook such as a #5 crochet hook. The grooved side of the seat must face away from the check ball, i.e. it should face outward as in the photo.
-
- #12. Check valve seat, ball, spring
The check valve seat, ball and spring (#12). The smooth side of the seat with the chamfered hole faces the ball.
-
- #13. Main nozzle
The main nozzle can be pressed out from the center of the venturi for cleaning(#13).