Ameer Randolph
The Homelite 330 is a chainsaw that has been known to experience issues with its carburettor, specifically with fuel flooding and clogs in the fuel line. This can be caused by a faulty needle valve or inlet lever, or by a deteriorated carb diaphragm. The Zama C1U carb model, which is used in the Homelite 330, has been known to experience these issues and can be difficult to repair. When reassembling the fuel lines, it is important to ensure that the supply line is connected to the nipple on the fuel pump diaphragm side, while the return line is connected to the nipple closer to the primer bulb.
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What You'll Learn
Troubleshooting a Homelite 330 that's not getting fuel
If your Homelite 330 is not getting fuel, there are several things you can check and troubleshoot.
Firstly, check if the fuel supply and return lines are connected correctly. On a Zama C1U carb, the supply line should go to the nipple on the main carb body, while the return line should go to the nipple closer to the primer bulb. The supply line should connect to the nipple on the fuel pump diaphragm side, while the line from the bulb returns to the tank.
If the lines are connected correctly, the next step is to check the inlet needle and lever. Ensure that the lever is adjusted properly and that the needle is not hanging open. You can do this by trying to blow into the fuel inlet area. If air passes when you press the lever, and it is sealed when you let go, then the lever and needle are functioning correctly.
If you suspect that the inlet needle or lever is the issue, you can try adjusting the lever height and ensuring it is seating properly. It may also be a good idea to pressure test to make sure the pop-off pressure is correct. If you don't have a pressure gauge, you can try taking the carb apart and leaving the needle and lever in place to get a sense of whether they are functioning correctly.
If your Homelite 330 still doesn't get fuel after these checks and adjustments, there could be other issues at play. It may be beneficial to consult a professional or seek further advice from a Homelite specialist forum.
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How to test the fuel inlet on a Homelite 330
To test the fuel inlet on a Homelite 330, you will need to check the needle valve and lever.
Firstly, inspect the lines and intake boot. If everything looks good, you can move on to the next step. If not, you may need to rebuild the carb.
If you are experiencing flooding, check that the metering diaphragm is functioning correctly. If the saw is spilling fuel out of the muffler, it could be an inlet needle or inlet lever issue. To test this, you can try blowing into the fuel inlet area. If air passes when you press the lever, the lever is functioning correctly. When you let go of the lever, it should be sealed. Ensure that the lever height is set correctly and that it is seating properly.
You can also perform a pressure test to check that the pop-off pressure is correct. If you have a pressure gauge and an air pump, use them to test the pop-off pressure. If you don't have these tools, you can try the method described above, but it may not be as accurate.
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Zama vs Walbro carburettors for the Homelite 330
The Homelite 330 is a chainsaw that has been known to use both Zama and Walbro carburetors. Some users have reported issues with the Zama carburetor, such as severe flooding, which has led them to switch to the Walbro WT4 carburetor. However, others have noted that the Zama carburetor should work fine as long as the needle valve is adjusted properly and the lever height is set correctly.
The Zama carburetor is a popular choice for many power equipment and chainsaw manufacturers, including Homelite. It is known for its durability and reliability, and it is often praised for its ability to provide consistent performance even in demanding conditions. One of the key features of the Zama carburetor is its primer bulb, which makes it easy to start the engine and helps to ensure a consistent fuel supply.
On the other hand, the Walbro carburetor is also a well-known brand in the carburetor industry and is used by many leading manufacturers of outdoor power equipment. Walbro carburetors have a reputation for being high-quality and reliable, with some users preferring them over Zama carburetors due to their perceived superior performance and fuel efficiency.
When it comes to the Homelite 330, both the Zama and Walbro carburetors can be used. However, it is important to note that there may be some differences in the specific models and parts used. For example, the Zama carburetor for the Homelite 330 is typically the RB-3 model, which is available as a repair kit. On the other hand, the Walbro carburetor used in the Homelite 330 is often the WT4 model, which is a direct replacement carburetor.
In terms of performance, some users have reported issues with the Zama carburetor flooding, as mentioned earlier. This could be due to a faulty needle valve or improper adjustment of the lever height. However, it is important to note that these issues can often be resolved by properly diagnosing and addressing the specific cause. On the other hand, the Walbro carburetor has been reported to perform well in the Homelite 330, with some users preferring it over the Zama option.
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How to fix a flooded Homelite 330
If your Homelite 330 is flooding, the first thing you should check is the needle valve. Make sure the lever height is set correctly, and that it is seating properly. You can get a gut feel for whether the lever is adjusted properly by taking the carb apart, but leaving the needle and lever in place. Try to blow in the fuel inlet area and see if any air passes. Press the lever and air should pass freely. Let go of the lever and it should be sealed. If you think it is sealing properly, again, make sure the lever height is set correctly.
If you have a pressure gauge and an air pump, you can pressure test to make sure the pop-off pressure is correct. If you don't have these tools, you can follow the method described above.
If you have a Homelite blower with a Zama C1U carb, the supply line should go to the nipple on the main carb body, and the return line to the nipple closer to the primer bulb. Depressing the primer bulb should draw fuel into the carb via the supply and back to the tank. The supply line should go to the nipple on the fuel pump diaphragm side. The nipple from the bulb usually just goes back into the tank to reclaim the fuel.
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Where to buy a Homelite 330 fuel line inlet
The Homelite 330 is a chainsaw that has been known to have issues with its Zama carburetor, which can cause severe flooding, with fuel spilling out of the muffler. This is suspected to be an issue with the inlet needle or inlet lever.
You can buy a Homelite Genuine OEM Replacement Fuel Line Inlet # 570259055 on Amazon.com. This product is listed under "Patio, Lawn & Garden".
Another option is to purchase a GardenPal Replacement Fuel Line with Fuel Cap, which fits the Homelite XL12 Super 12 model. This product replaces OEM 63744A/63745A/UP07287 and can be purchased on Amazon.com.
Additionally, eReplacementParts.com offers a range of Homelite parts, although it appears that the specific fuel line inlet you are looking for (part number 570259055) is no longer available on this website.
Finally, you may be able to find the part you need by searching for it using a search engine or trying alternative retailers. It is worth noting that some 330s used Walbro WT4 carbs, so this could be an alternative option to the Zama carb.
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Frequently asked questions
This could be an inlet needle or inlet lever issue. Check if the lever is adjusted properly and if the needle is hanging open. You can also try pressure testing to make sure the pop-off pressure is correct.
The fuel line for the clunk in the tank could be damaged or blocked. Try cleaning out the entire fuel system and replacing the lines.
The supply line should go to the nipple on the fuel pump diaphragm side, while the line from the bulb goes back to the tank.
Some Homelite 330s used Walbro WT4 carbs. Try replacing the Zama carb with a Walbro WT4 carb.
