Product Description
?Genuine OEM replacement part, this part is sold individually. A carburetor basically consists of an open pipe through which the air passes into the inlet manifold of the engine. The pipe is in the form of a Venturi: it narrows in section and then widens again, causing the airflow to increase in speed in the narrowest part. Below the Venturi is a butterfly valve called the throttle valve ' a rotating disc that can be turned end-on to the airflow, so as to hardly restrict the flow at all, or can be rotated so that it (almost) completely blocks the flow of air. This valve controls the flow of air through the carburetor throat and thus the quantity of air/fuel mixture the system will deliver, thereby regulating engine power and speed. The throttle is connected, usually through a cable or a mechanical linkage of rods and joints.Fuel is introduced into the air stream through small holes at the narrowest part of the Venturi and at other places where pressure will be lowered when not running on full throttle.
Frequently Purchased Together
?Troubleshooting
- Weed Eater
- Poulan
- Trimmer
Customer Part Reviews
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Customer Repair Instructions
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
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Engine would not start
Craig from Vista, California
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Parts Used:
- 577135902
primer bulb need to be replaced
Burt from Pearl, Mississippi
- Difficulty Level:
- Easy
- Total Repair Time:
- 15 - 30 mins
- Parts Used:
- 577135902
Replace carburetor.
New carburetor was slightly different than one that came with trimmer, but it worked fine.
Engine was hard to start but would idle once it did. Then it would bog down and die anytime you gave it throttle.
Larry from Bonners Ferry, Idaho
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Parts Used:
- 577135902
Wish the carb would have included the gasket though. Mine was fine to re-use but it would have been nice to replace it. The gasket is ... Read more included in a gasket kit, and I didn\'t need all of the items on the kit. No big deal since mine was fine though.
Weed Eater would start to hesitate at higher speeds then got to the point of stalling and not starting at all. Tried new fuel lines and adjustments with no luck. Purchased new carb at a reasonable pri
Tom from Broadview Hts, Ohio
- Difficulty Level:
- A Bit Difficult
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Screw drivers
- Parts Used:
- 577135902
2) With needle nose pliers remove fuel lines from carburetor.
3) Remove 2 phillip-head screws.
4) Tilt carburetor to remove throttle cable.
5) Check position of gasket at this time to ensure proper positioning when installing.
6) Clean any dirt from carburetor opening a ... Read more nd gasket area.
7) Reverse procedure to install ensuring gasket is in proper position.
8) DO NOT over tighten screws as they are going into plastic.When resistance is felt on screws,
STOP. When both screws are even give an additional 1/8 turn. DO NOT OVER TIGHTEN.
9) With job is done it\'ll run like new. Only thing I had to do was adjust idle, very simple.
Just take your time and you\'ll be fine. Good Luck
Fuel problems
Edward from Clearfield, Pennsylvania
- Difficulty Level:
- A Bit Difficult
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Socket set
Remove the fuel lines and throttle from the old carburetor
Remove the screws hold the carburetor on
Install the new carburetor and tighten the screws
Put the fuel lines and the throttle on the new carburetor
Replace the air filter assembly
Remove the old spark plug
... Read more Gapped the new one at 0.025
Weed eater trimmer will not start.
John from Stockton, California
- Difficulty Level:
- A Bit Difficult
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Nutdriver, Screw drivers, Socket set
2. Replaced air filter foam.
3. Replaced spark plug.
4. Replaced fuel tank cap.
5. Waiting for the fuel line hoses and fuel filter. (found hoses deteriated)
it would start but die out when given gas
mike from Crest Hill, Illinois
- Difficulty Level:
- A Bit Difficult
- Total Repair Time:
- 15 - 30 mins
- Tools:
- Wrench set
- Parts Used:
- 577135902
Hard start turn in to no start over time.
CHARLES from BOSSIER CITY, Louisiana
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Pliers, Screw drivers, Socket set
- Parts Used:
- 577135902
2. Removed carb bolts with works bit on a screwdriver.
3. Disconnect fuel hoses using pliers and pull up carb watching out for a gasket.
4. Pull bolts out of old carb and place in new carb.
5. Place new carb back on the motor making sure gasket stay in place.
6. Tighten ... Read more bolts and connect fuel lines. Installation complete.
7. Now just need to prime carb and check for fuel leaks. No leaks found try to start trimmer.
Bad carburetor on weed eater. Broken tube inside
Bonnie from Beaver Falls, Pennsylvania
- Difficulty Level:
- Easy
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Pliers
- Parts Used:
- 577135902
Trimmer would not start !
James from Rockport, Texas
- Difficulty Level:
- Easy
- Total Repair Time:
- Less than 15 mins
- Tools:
- Pliers, Screw drivers
- Parts Used:
- 577135902
Cleaned filter
Removed two screws holding carburetor.
Disconnected two fuel lines.
Disconnected throttle line.
Connected throttle line to replacement carburetor
Connected two fuel lines to replacement carburetor
Replaced gasket
Installed two screws holdi ... Read more ng carburetor
Installed filter
Replaced cover
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