1. Fuel System Check (Most Likely Culprits):
* Fuel Petcock: Make sure the fuel valve (petcock) is turned ON. These can sometimes get stuck in the OFF position or become clogged. Try turning it off and on several times.
* Fuel Line: Check the fuel line for kinks, cracks, or blockages. A partially clogged line can restrict fuel flow, especially with a small engine like the PW50. Blow air *gently* through the line to check for blockages. Never use excessive force.
* Fuel Filter: The PW50 might have an in-line fuel filter. If so, locate it and inspect it for debris or clogging. Replace it if necessary. (It's a cheap and easy fix).
* Carburetor: This is the most likely culprit. Dirt, debris, or varnish can clog the jets in the carburetor, preventing fuel from reaching the engine.
* First step: Try gently tapping the carburetor to dislodge any debris that might be blocking the jets.
* Next: Remove the carburetor bowl (usually involves a few screws) and check for debris. Clean the bowl thoroughly.
* If necessary: Consider a full carburetor cleaning. This involves disassembling the carburetor and cleaning all jets and passages with carburetor cleaner and compressed air. This requires some mechanical aptitude, but there are many online tutorials for PW50 carburetor cleaning. Be meticulous and keep track of how everything goes back together.
* Fuel Tank: Check the fuel tank for any water or debris. Water in the fuel will cause problems. Drain the tank and clean it if necessary.
2. Reed Valves (Less Likely):
Reed valves are responsible for controlling airflow into the engine. If they're stuck closed or damaged, the engine will have trouble running. However, a sudden failure *while* running is less common for reeds than a gradual decline in performance.
* How to check: You'll need to remove the carburetor and inspect the reed valves. They should be flexible and open freely. If they're cracked, broken, or sticking, they need to be replaced. Again, this involves some mechanical aptitude.
3. Other Possibilities (Less Likely):
* Spark Plug: While less probable given the "fuel problem" symptoms, a fouled spark plug *could* contribute. Check the plug for carbon buildup or damage. Replace it if necessary. (Also relatively cheap).
* Air Filter: A severely clogged air filter can restrict airflow and affect the fuel/air mixture. Check and clean or replace it.
Troubleshooting Steps:
1. Start with the fuel system. This is the easiest and most likely place to find the problem.
2. Work your way down the list. If the fuel system checks out, then move to the reed valves and other possibilities.
3. Clean the carburetor first. This often resolves many fuel-related issues.
Important Note: If you're not comfortable working on the carburetor or reed valves yourself, take the PW50 to a qualified small engine repair shop. They'll have the tools and expertise to diagnose and fix the problem correctly. The cost of a repair will likely be less than the cost of replacing parts unnecessarily.
