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9003852-1-M-Husqvarna-530047721-Purge Bulb
Part Location Diagram of 530047721 Husqvarna Purge Bulb
See part A-24 in the diagram
Replacing your Poulan Chainsaw Purge Bulb
( Grid squares measure 1x1 inch )
9003852-1-S-Husqvarna-530047721-Purge Bulb 9003852-2-S-Husqvarna-530047721-Purge Bulb Part Location Diagram of 530047721 Husqvarna Purge Bulb Replacing your Poulan Chainsaw Purge Bulb

Purge Bulb 530047721

Manufactured by:
Husqvarna
ERP Number:
ERP9003852
Part Number:
530047721
Original Equipment Manufacturer ?
  Works with your model  033!
$12.35
★★★★★
★★★★★
49 Reviews
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(66 rated repairs) ?
  Works with your model   033!

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Description Frequently Purchased Together Troubleshooting Repair Videos Reviews Questions & Answers Repair Instructions Model Cross Reference

Product Description

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This is a genuine OEM replacement part, it is sold individually. By pressing on the Purge Bulb, it will force fuel into the fuel line from the fuel tank into the carburetor. Once the carburetor is full of fuel, the excess fuel will be purged back into the tank in the fuel return line. Over time the primer will lose its elasticity or crack and need to be replaced. We have an article and video on

Frequently Purchased Together

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Chainsaw Fuel Line Kit
$23.21
In Stock

Troubleshooting

This part works with the following brands:
  • Poulan
  • Husqvarna
  • Craftsman
  • Jonsered
  • RedMax
  • Weed Eater
  • Snapper
This part works with the following products:
  • Chainsaw
  • Trimmer
  • Leaf Blower / Vacuum
  • Pole Saw
Part# 530047721 replaces these:
5300477-21, 530047721,

Videos For installing this part.

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Replacing your Purge Bulb
Replacing your Purge Bulb
Replacing your Purge Bulb
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Customer Part Reviews

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4.8
Average Rating (out of 5):
★★★★★
★★★★★
(49 Reviews)
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  • 5 stars
    45
  • 4 stars
    1
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★★★★★
★★★★★
Easy repair
Arrived on time, exactly what we needed, installation was fast. Very satisfied.
Guest - April 24, 2019
Verified Purchase
★★★★★
★★★★★
ez repair purge bulb
Received on schedule...installed and works perfectly. good job for all involved. THX
Guest - May 7, 2019
Verified Purchase
★★★★★
★★★★★
Satisfied with this product
Fits perfectly, thank you
Guest - April 24, 2019
Verified Purchase
★★★★★
★★★★★
Quality part, as usual,
Part arrive quickly, was the right one, and well made. Just their normal excellent service.
Guest - May 1, 2019
Verified Purchase
★★★★★
★★★★★
Easy repaor
Part arrived quikly
Rod - May 7, 2019
Verified Purchase
★★★★★
★★★★★
Great and prompt service
Ordered and received within 3 working days. Can’t beat that! Would use again
Guest - May 18, 2019
Verified Purchase
★★★★★
★★★★★
Perfect service
The part was exactly right. The part arrived right on time. I will use this site any ti e I need a difficult to find replacement part
Guest - May 28, 2019
Verified Purchase
★★★★★
★★★★★
Simple installation, works perfectly
Customer service is good with this site. Easy to use, quick to respond and ship parts.
Guest - May 30, 2019
Verified Purchase
★★★★★
★★★★★
Perfect fit. Easy to install
Fast delivery. Brand New part and installed was up and running perfectly. Thanks so much for your services.
Guest - June 1, 2019
Verified Purchase
★★★★★
★★★★★
Exactly
I could not believe how quick it arrived ... and it was the right piece. It was just the ticket
Guest - July 2, 2019
Verified Purchase
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Questions & Answers

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Need primer bulb and fuel line.
James For model number 358 350380 - November 17, 2023

Hello James, thank you for your question. The Bulb is 530047721 and the fuel line is 530069247. We hope this helps.

eReplacementParts Team
November 17, 2023

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I have a Wild Thing 18cc chainsaw and need the purge bulb, the two lines (and possibly a new fuel filter). Do you sell this as a kit. I don't really need 2 ft of each type of line.
Jim For model number P4018WT - March 15, 2022

Hello Jim, Thank you for contacting us. We have researched the model you have provided and have found the part you are looking for is Part Number: 530047721 for the Purge Bulb. Part Number: 530069247 and Part Number: 530069216 for the Fuel Lines and Part Number: 530095646 for the Filter. These parts are not sold as a kit sorry, they are only sold separately. If you need help placing an order, customer service is open 7 days a week. Please feel free to give us a call. We look forward to hearing from you!

eReplacementParts Team
March 15, 2022

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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 

(66 rated repairs) ?
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Sorry, we couldn't find any existing installation instruction that matched.

Old Primer Bulb was cracked and would not pump fuel into the carb

Rich from Salem, Virginia

95 of 95 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
Parts Used:
580940901, 530069247, 530069216, 530047721
- Removed top cover (to access carb area and allow side panel removal)

- Removed side cover where primer bulb is located

- Remove old snap in primer bulb (without disconnecting fuel lines)

- Cut and replace the 2 fuel lines one at a time (mine were hard and brittle from old fuel)

- The new bulb has 2 fuel ports, one is longer than the other which matched the old bulb.

- Installation instructions said to double check the direction of the fuel flow (the bulb sucks fuel through the carb, so the inlet side is connected to the carb and the outlet side goes back to the fuel tank).

- Snap the new bulb into place on the side panel

- Attach the side panel

- Attach the top panel
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Wouldn\'t keep a prime, bad purge bulb old broken gas lines.

Dana from Vancouver, Washington

44 of 44 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
More than 2 hours
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
530071894, 530069247, 530069216, 530047721, 530023877
Removed shroud over carb. Removed pull starter shroud. Removed throttle linkage from carb and from saws handle that way you can take the air filter housiing off and get it out of the way, simple to put back together. Removed the choke and kill switch then removed the carb and the carb manifold in order to replace the main gas line to the tank. This makes things alot easier when replacing the main gas line. Installing the main line was the hardest because the line fits extemely tight into the gas tank. I cut the end of the gas line at an angle in order to get it started in to the tank. The gas line I bought comes with instructions to help you do it right. Once I got it started into the tank I used a surgical Hemostat to reach in the tank and pull the hose into the tank to where I could cut the end square and put a new coupler on it and then attach the fuel filter. Long nose needle nose pliers would work but I didn\'t have a pair. Pulling the hose into the tank was the hardest part because the gas line fits really tight. I put a little WD40 on the line to help lubricate it so it would pull thru easier. Then I replaced all the other gas lines, installed a new Purge Bulb, put new gaskets on the manifold (I didn\'t replace any internal carb gaskets) I put everything back together, put gas in the tank, primed the Purge Bulb and after two pulls it fired right up and runs good.
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Two Poulan Pro power heads not running

Neal from Fort Worth, Texas

20 of 20 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Screw drivers
Parts Used:
530095646, 530069247, 530069216, 530047721
The fuel system disintegrates from the ethanol in gasoline, so I ordered the necessary parts; fuel filter and fuel line, purge line (different size), and a primer bulb, if one is needed.. If the primer bulb is tore, cracked, or makes a whistling sound, replace it first. Get a diagram online if your fuel lines are in pieces, but if they are intact, remove the fuel line from the back of the primer assembly, slowly pull the fuel filter and fuel line out through the fuel fill port. Cut your new fuel line\'s end at a diagonal, so that you can insert it through the hole in the gas tank. Slowly push enough through until you can grab it from the fuel fill port. Cut off this diagonal piece so that the end is once again square, and install your new fuel filter. Pull the fuel line back enough so the fuel filter is at an appropriate pickup point, I.e., close to the bottom of the tank while running. Cut the fuel line so that it just connects with the primer assembly. Remove the purge line from the primer assembly and use it to cut a new purge line slightly longer, with a diagonal cut on one end. Feed the diagonal end through the tank wall, and connect the other end to the primer assembly. I was able to do my 2 machines from one fuel line and purge line kit.
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Would start & idle fine, but would not stay running when i gave it throttle.

Blaze from Iowa Park, Texas

18 of 18 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Socket set
Parts Used:
530057925, 530095646, 530047721
Cleaned the carburetor, Purge bulb was cracked, so changed it. put new air filter on & new fuel filter. Also changed the spark plug & cleaned the spark arrestor. didn\'t take very long at all. super easy, believe anybody could do it.
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Ethanol damage

William from Sewaren, New Jersey

10 of 10 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers
Parts Used:
530047721
Had primer failure. Replaced bulb and found gas had rotted gas tank line
as well. Ordered tank replacement. Great web sight. Easy to find exactly what
you need. Installation is straight forward. Instructions for the bulb and tank are easy to get online. Information is everywhere. Very fast shipping. If you need replacement par ts for your tool. This is by far the best place to get them. Enough said. Good luck with your repairs.
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Purge bulb was cracked

ALLEN from EARLY, Texas

9 of 9 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
Parts Used:
530047721
Fairly easy to replace but easier if you have small fingers. I had to use a long nose pliers to put the plastic tubes on to the bulb. Other than that it worked fine.
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Leaky Bulb

steven from High Point, North Carolina

8 of 8 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
530047721
Disconnected (2) fuel lines. Unclipped old bulb from base Clipped in new Bulb and reattached fuel lines. Done.
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Split primer bulb air getting in fuel line.

Daniel from Fordoche, Louisiana

7 of 7 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
530047721
Remove side cover to access the primer bulb,then with a screw driver pry it out and remove fuel lines .
This is a good time to replace fuel lines if they are hard or cracked. Attach fuel lines in same order on new
Bulb ,snap it back in and replace cover. Done!
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Hard starting and ran intermittingly

Neal from Martinsburg, West Virginia

6 of 6 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Screw drivers, Socket set
Parts Used:
530030179, 578942701, 545195901, 530095646, 530069599, 530047721
Replaced gas tank, spark plug and gas hoses. Very easy straight forward repairs, just take a bit of time.
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Primer was leaking. new one fairly easy to replace

mark from San Antonio , Texas

6 of 6 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
530047721
Take off air filter cover, pull 2 gas lines off old primer, put gas lines onto new plunger, screw air filter cover back on. Done.
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Model Cross Reference

This part works with the following models:
ERP Number: ERP9003852
Manufacturer Part Number: 530047721
Brand Model Number Description
Poulan 031 Trimmer - Line Trimmer
Poulan 033 Trimmer - Poulan String Trimmer Model 033 Parts
Husqvarna 125B Leaf Blower / Vacuum - 28cc 2-Stroke 170-MPH Gas-Powered Handheld Gas Blower
Husqvarna 125BV Leaf Blower / Vacuum - Husqvarna Leaf Blower Model 125BV Parts
Husqvarna 125BVX Leaf Blower / Vacuum - Handheld Leaf Blower
Husqvarna 125BX Leaf Blower / Vacuum - Handheld Leaf Blower
Poulan 131 Trimmer - Poulan String Trimmer Model 131 Parts
Husqvarna 31 Trimmer - Wg Handheld Trimmer
Weed Eater 31WG Trimmer - Gas Trimmer
Craftsman 358341900 Chainsaw - Chain Saw
Craftsman 358341950 Chainsaw - Chainsaw
Craftsman 358348360 Trimmer - Trimmer
Craftsman 358350670 Chainsaw - Chainsaw
Craftsman 358350671 Chainsaw - Chainsaw
Craftsman 358350810 Chainsaw - Chainsaw
Craftsman 358350811 Chainsaw - Chainsaw
Craftsman 358350820 Chainsaw - Chainsaw
Craftsman 358350821 Chainsaw - Chainsaw
Craftsman 358350830 Chainsaw - Chainsaw
Craftsman 358350870 Chainsaw - Chainsaw
Craftsman 358350880 Chainsaw - Chainsaw
Craftsman 358350980 Chainsaw - Chainsaw
Craftsman 358350981 Chainsaw - Chainsaw
Craftsman 358350982 Chainsaw - Gas Chain Saw
Craftsman 358350990 Chainsaw - Chainsaw
Craftsman 358350991 Chainsaw - Chainsaw
Craftsman 358350992 Chainsaw - Gas Chainsaw
Craftsman 358351600 Chainsaw - Chainsaw
Craftsman 358351610 Chainsaw - Chainsaw
Craftsman 358351700 Chainsaw - Chainsaw
Purge Bulb
$ 12.35
In Stock
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Stock Status
✖
Mail-In Recycling Rebate

Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.

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