This replacement fuel tank assembly is an authentic item that is sourced directly from original equipment manufacturer for use with Troy-Bilt string trimmers. It is made from high quality plastic and it includes the fuel tank, fuel lines, fuel cap and the screws to secure it. Over time the material may deteriorate or crack eventually requiring replacement. Make sure to drain the gas tank before starting a repair.
Fuel Tank Asm Ac8 941-031506S
OEM part for: Troy-Bilt, Cub Cadet, MTD
Part Number: 941-031506S
Compatibility
This part will fit the following 19 machines
Troy-Bilt
Cub Cadet
MTD
This item works with the following types of products:
- Trimmer Parts
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.
I had a pinched fuel line, and since I had my trimmer tore apart I wanted to tune it all up. I didn't want to rebuild the carburetor so I just replaced it with a new one.
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
2. Removed the 3 screws holding on the outer cover
3. Loosened the bottom two screws on the lower outer cover.
4. Slide the bottom cover back, and pulled the gas tank out.
5. Removed the two screws behind the air filter, pulled them out and slid the carburetor up.
6. Hooked the new gas tank line to the new carburetor. Ran the line from the carburetor to the primer. Then ran the primer overflow line back to the gas tank.
7. I slid the carburetor in replaced the two screws, then slid the new gas tank in. Tightened the bottom two screws that were just loosened to hold the gas tank in place. Replaced the top cover put the final three screws back in. Then changed the spark plug. It fired up on the second or third pull and ran better than when I purchased it new.
Crack in tank
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
Air purge primer dry rotted and fuel lines pulled out of gas tank.
Tool Type
Trimmer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
FUEL LINES (OLD) BROKE
Tool Type
Trimmer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Power Drill
Parts Used
2) REMOVE THE SCREWS THAT HOLD THE REAR CASE ON THE MOTOR SO THE FUEL TANK COULD BE REMOVED.
3) INSTALL NEW TANK AND RECONNECT FUEL LINES.
4) REPLACE TOP CVER AND SCREWS TO REAR COVER.
NOTE: THE PROBLEM IS THAT THIS FUEL TANK ASSEMBLY ONLY HAS TWO FUEL HOSES INCLUDED. THE FUEL TANK ASSEMBLY SHOULD INCLUDE THE AIR PURGE BULB TO CARB. FUEL LINE.
Fuel return hose became brittle and broke when conducting other repair
Tool Type
Trimmer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, Impact driver with bit set speeds things up
Parts Used
1. Drain any residual fuel from the tank.
2. Unscrew two torx coarse-thread screws from the rear of the red top cover by the pull cord, and three torx machine screws from the front, then lift the cover straight up to remove. You may need to pivot it around the spark plug boot if it gets in the way. Use caution, as the fuel lines are still connected to the primer bulb in the cover.
3. Remove the blue fuel line (primer to tank) from the primer bulb - it just pulls off. Be sure to not remove the yellow line (carb to primer), or else mark the outlet side of the primer where the blue line was in case both lines get removed - they need to go back the same way.
4. Remove the black fuel line on the front side of the carburetor at the carburetor (tank to carb). It just twists/pulls off, but the carb has aggressive flanges - you may have to cut a slit in it to remove, or use needle nose pliers (careful not to damage the carburetor flange).
5. The tank is held in by two large rectangular index holes in the front and rear black plastic clamshell body that houses the engine. These holes have a rubber gasket in them, and basically just pinch around ears on the tank to hold it in place. Remove the two large pocketed torx screws on the bottom of the black engine clamshell and it should allow you to spread open the bottom of the case enough to give you the clearance needed to slide one of the tank ears out of the index hole, then pull the tank out.
6. Put the new tank in the index holes, ensuring the rubber gaskets are in place. Connect the black and blue hoses to the carb and primer bulb, respectively. The black hose may require some effort to slide over the carburetor flanges - I was able to get the hose on the nipple by hand, but had to use pliers to twist/push it over the flanged part. Put a small amount of fuel in the tank, and press the primer bulb a few times and make sure there is good vacuum, and suction is pulling fuel from the black line into the carb, out through the yellow line into the bulb, and out of the bulb through the blue line back into the tank, and that there are no leaks.
7. Assemble in reverse order - screw in two large torx screws into the pocketed holes at the bottom of the black clamshell case, then fit the red cover over the engine, carburetor and exhaust (use care that the exhaust port in the cover slots into place in the black engine clamshell), and re-install the five torx screws.
Broken fuel lines, gaskets torn on carburetor and cracked purge bulb
Tool Type
Trimmer
Difficulty
Medium
Time
More than 2 hours
Tools Used
Screwdriver
Return fuel line broke at tank
Tool Type
Trimmer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers
Parts Used
2. Removed carburetor fuel line with pliers.
3. Removed old fuel tank assembly.
4. Placed new fuel tank assembly into rubber grommets in housing.
5. Reconnected black fuel line to carburetor and green return fuel line to priming bulb.
6. Replaced cowling with screws and made sure all were securely tighted.
7. Operation followed normal instructions.
Pawls for the starter rope broke
Tool Type
Trimmer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, None
Parts Used
Replaced the pawls on the fan blade
Put the starter rope mechanism back
Bad carburator and gas tank.
Tool Type
Trimmer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver
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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.