Easy
Less than 15 minutes
This genuine part is supplied by the original equipment manufacturer for use with Ryobi handheld lawn and garden equipment. The cap is designed to keep the fuel in the tank. Note that it is a vented cap that lets the air back into the tank so a vacuum is not created. It provides an identical replacement for a missing or a faulty component that was included with a new unit. Please make sure to check the diagrams of your model for the correct location and installation. Keep in mind this high-quality fuel cap assembly is made of durable plastic and is sold individually.
Fuel Cap Assembly 310816006
OEM part for: Ryobi
Part Number: 310816006
$5.31
In Stock
Order within the next 4 hours and your part ships today! 
Compatibility
This Fuel Cap Assembly will fit the following 20 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Displaying 20 of 20 matching models.
20 total model matches. Try the above search to narrow your results.
This is the official OEM part for the following brands:
- Ryobi
This item works with the following types of products:
- Blower
- Cultivator
- Edger
- Trimmer
- Vacuum
This part replaces obsolete part #: 310586001
Customer Part Reviews ?
Average Rating (out of 5):
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Garden tool parts!!
The gas cap arrived quickly and fit perfectly. My trimmer is working great again.
William -
July 26, 2021
Verified Purchase
Great part,fit perfectly
Arrived quickly,string trimmer no longer leaks from vent in cap
Guest -
April 25, 2020
Verified Purchase
Perfect fit!
This part works as advertised and is a perfect fit for my Ryobi 4 cycle trimmer. No leaks.
Guest -
August 19, 2019
Verified Purchase
Great Ryobi gas cap!
Worked as expected. Now my weed eater doesn’t leak gasoline.
Guest -
August 6, 2019
Verified Purchase
It was the right part.
The part worked fine
Guest -
July 20, 2019
Verified Purchase
Shopping for the right part without leaving my home.
The order was correct and received quickly and got back to work with minimal down time. Thanks for great service.
Guest -
July 12, 2019
Verified Purchase
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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.
Major Tune-Up
mike - November 16, 2015
👍 3 of 3 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Socket set, Wrench Set
It was time to perform a major tune-up on my 4-cycle trimmer. This included replacing the air filter and spark plug. Also, an oil change and gap check and inspection on the valve rockers.
The gas cap had leaked from the filtered-vent. Previous cleanings failed to correct this issue. the only remedy is to replace the fuel cap.
eReplacementParts.com is the perfect place to find OEM replacement parts.
Thank you!
The gas cap had leaked from the filtered-vent. Previous cleanings failed to correct this issue. the only remedy is to replace the fuel cap.
eReplacementParts.com is the perfect place to find OEM replacement parts.
Thank you!
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Trimmer would start and die repeatedly
eric - July 24, 2016
👍 3 of 4 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Parts Used
I noticed that I could hear a hissing sound from the gas cap the one-way valve in the cap that lets air in but prevents fuel from leaking out and stuck closed. A new cap fixed instantly
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Needed a new fuel cap
Curt - May 20, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Parts Used
I received the new fuel cap, then just threaded it on the fuel tank.
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Leaking gas cap center yellow air flow filter
jeffery - May 4, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Srew the cap off,screw the new cap on
Parts Used
It was as easy as just replacing the old cap with the new one. Personally I found this to be a poor design on Ryobi's part as the gas deteriorates this type of system that allows the air to flow thru preventing what one would call a vapor lock.
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fuel cap leaked
Erik - June 8, 2022
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Hand
Parts Used
1. removed old fuel cap
2. installed new fuel cap
3. no more leaks
2. installed new fuel cap
3. no more leaks
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Spits gas
Henry - September 28, 2019
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, None
Parts Used
.take the cap off then put the new one on
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Gas leaking from one-way valve on gas cap.
David - September 20, 2019
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Rag
Parts Used
1. Started engine.
2. Saw fuel leaking out of one way valve (white part of gas cap).
3. Ordered new gas cap.
4. Received part and opened package.
5. Use rag to cover gas cap prior to removal to avoid gas on hands.
6. Removed gas cap.
7. Screwed on new gas cap.
8. Started engine and no leaks.
2. Saw fuel leaking out of one way valve (white part of gas cap).
3. Ordered new gas cap.
4. Received part and opened package.
5. Use rag to cover gas cap prior to removal to avoid gas on hands.
6. Removed gas cap.
7. Screwed on new gas cap.
8. Started engine and no leaks.
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Gas cap was leaking through the vent hole in the top of the cap.
George - April 8, 2017
👍 1 of 2 people found this instruction helpful
Tool Type
Edger
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, None required.
Parts Used
Replaced the original gas cap with a new one.
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Cap to our gas tank was leaking gas.
Steve - August 10, 2016
👍 1 of 2 people found this instruction helpful
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Parts Used
Unscrewed bad cap, screwed on the good cap.
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
