Part Location Diagram of 577135902 Husqvarna CARBURETOR ASSEMBLY
See part B-17 in the diagram
( Grid squares measure 1x1 inch )

CARBURETOR ASSEMBLY 577135902

Manufactured by:
Husqvarna
ERP Number:
ERP18528963
Part Number:
577135902
Original Equipment Manufacturer ?
  Works with your model  SST25CE!
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(20 rated repairs) ?
  Works with your model   SST25CE!

Product Description

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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

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Troubleshooting

This part works with the following brands:
  • Weed Eater
  • Poulan
This part works with the following products:
  • Trimmer
Part# 577135902 replaces these:
577135901, 577135902,

Customer Part Reviews

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4.5
Average Rating (out of 5):
★★★★★
★★★★★
(6 Reviews)
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Questions & Answers

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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.

Easy 

15 - 30 mins 

(20 rated repairs) ?
  • 1
  • 2
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Engine would not start

Craig from Vista, California

13 of 13 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
577135902
After receiving my ordered part within 4 days. I replaced the carb assembly. By removing the air filter assembly, and the the two screws. Removed the fuel lines and linkage from the old carburetor, then hooked them up in the same place on the new carburetor. Installed the two screws and then the air filter. Primed it, pulled it 3 times an d it fired right up, runs like new now
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primer bulb need to be replaced

Burt from Pearl, Mississippi

10 of 10 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Parts Used:
577135902
Remove air filter and carburetor.

Replace carburetor.

New carburetor was slightly different than one that came with trimmer, but it worked fine.
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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

9 of 9 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
577135902
Popped off the air filter. Removed the fuel lines and throttle cable then removed the two hex head screws that hold the carb assy on. Reversed steps to install new one. Ran like new afterwards.

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 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.
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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

7 of 7 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
Parts Used:
577135902
1) Remove air cleaner cover and filter.
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 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
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Fuel problems

Edward from Clearfield, Pennsylvania

6 of 6 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Socket set
Parts Used:
577135902, 530030179
Remove the air filter assembly
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
Gapped the new one at 0.025
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Weed eater trimmer will not start.

John from Stockton, California

5 of 5 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Screw drivers, Socket set
1. Replaced the carburetor assembly.
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)
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it would start but die out when given gas

mike from Crest Hill, Illinois

3 of 3 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Wrench set
Parts Used:
577135902
Removed air filter removed carburetor reinstalled using oldgaskets started up runs great I\'m very satisfied
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Hard start turn in to no start over time.

CHARLES from BOSSIER CITY, Louisiana

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
577135902
1. Removed air filter cover and filter.
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 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.
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Bad carburetor on weed eater. Broken tube inside

Bonnie from Beaver Falls, Pennsylvania

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers
Parts Used:
577135902
Removed old carburetor and replaced with new one
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Trimmer would not start !

James from Rockport, Texas

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers
Parts Used:
577135902
Removed air cleaner cover and filter
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 ng carburetor
Installed filter
Replaced cover
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