How to Replace the Fuel Tank Purge Line on a Poulan Chainsaw (Model P3314)

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Is gas leaking from your engine? You might want to take a close look at the fuel lines. There are multiple fuel lines found on most small engines. At a minimum, there will be a line carrying fuel from the tank to the carburetor, and a second line returning excess fuel from the carburetor to the fuel tank.

Many models have a remote purge bulb, which adds a third line between the bulb and the carburetor. Some models will have a remote fuel tank vent (and another piece of fuel line connecting it to the tank).

Fuel lines are in constant contact with gasoline. Over time, the gas will begin to harden and deteriorate the fuel lines. Once hardened, the fuel lines are easily cracked or broken. Even a small crack will create a potentially dangerous fuel leak, and will allow air into the fuel system. Air in the fuel system can cause the engine to run erratically, die, or not start at all.

This article provides step-by-step instructions for replacing the fuel tank purge line on a Poulan chainsaw.

Let's get started.   REMOVING THE PURGE LINE [top] 1. Drain the fuel.

Drain any excess fuel from the tank.

  2. Remove the top cover.

Remove the (3) screws securing the top cover to the saw.

Lift the top cover away from the saw.

  3. Remove the air filter housing.

Remove the air filter cover.

Remove the air filter from the housing.

Remove the (1) screw securing the air filter housing to the engine.

Remove the (2) nuts securing the air filter housing to the engine.

Lift the air filter housing away from the carburetor assembly.

  4. Remove the carburetor.

Pull and hold the throttle trigger to expose the throttle linkage attachment point (on the trigger).

Disconnect the linkage from the throttle trigger.

Disconnect and remove the throttle linkage from the carburetor.

Slide the carburetor assembly off the mounting bolts and away from the engine.

Use long-nosed pliers to disconnect the fuel intake line from the carburetor.

  5. Remove the fuel tank purge line.

Use long-nosed pliers to disconnect the fuel purge line from the carburetor.

Use long-nosed pliers to disconnect the fuel purge line from the purge bulb assembly.

  INSTALLING THE NEW PURGE LINE [top] 6. Cut the new fuel line to the proper length.

Align the ends of the old fuel line and the new fuel line.

Cut the new fuel line to the length of the original fuel line.

  7. Install the fuel purge line.

Connect the new fuel tank purge line to the primer bulb assembly.

  REASSEMBLING THE UNIT [top] 8. Reinstall the carburetor.

Connect the incoming fuel line (usually green) to the intake nipple on the bottom of the carburetor.

Connect the new fuel tank purge line to the outlet on the top of the carburetor.

Slide the carburetor onto the two mounting posts on the engine.

Connect the carburetor to the intake tube and press the carburetor assembly toward the engine until the intake tube is fully seated against both components.

Connect the throttle linkage to the carburetor linkage.

Pull and hold the throttle trigger to expose the attachment point for the trigger-portion of the throttle linkage.

Connect the throttle linkage to the throttle trigger.

  9. Reinstall the air filter housing.

Slide the air filter housing over the carburetor mounting posts.

Secure the air filter housing to the engine with the (2) nuts.

Secure the air filter housing to the carburetor with the (1) screw.

Install the air filter.

Install the air filter cover.

  10. Reinstall the top cover.

Install the top cover onto the saw.

Secure the top cover with the (3) screws.

Do-it-yourself repairs like these are easier than you might think: From lawn machines to cordless drills, kitchen mixers to outdoor grills. Our "how-to" articles walk you through each repair from start to finish.

So, doing-it-yourself means never having to do it alone.

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