probably needs the car rebuilt
Disconnect the fuel lines and use berrymans spray to clean the pit cock.
The correct ratio for that particular snowblower engine is 50 parts fuel to 1 part two-stroke engine oil.
32:1
50:1
Adjust the fuel/air mixture, ensure you have an unclogged air filter/air cleaner.
50 to 1 (parts)
Be sure the vent in the fuel cap is working.
be best to drain fuel and replace with correct mixture
To replace a Toro 5hp engine on a snowblower, first ensure the machine is disconnected from any power source. Remove the snowblower's hood and any covers to access the engine, then disconnect the throttle, fuel lines, and electrical connections. Unscrew the engine mounting bolts and lift out the old engine. Place the new engine in position, secure it with the mounting bolts, and reconnect all components before testing the snowblower.
Surging in a snowblower is often caused by inconsistent fuel delivery, which can result from a clogged fuel filter, a dirty carburetor, or improper fuel mixture. Additionally, air leaks in the intake system or a malfunctioning governor can lead to fluctuating engine speed. Maintaining the fuel system and ensuring proper tuning can help prevent surging. Regular maintenance, including cleaning or replacing filters and inspecting the carburetor, is essential for optimal performance.
Possible causes: faulty spark plug; dirty or clogged fuel filter; dirty or clogged air filter; carburetor needs adjustment.
No fuel in tank; clogged line at/in the fuel tank; clogged fuel filter; carburetor needle valve is closed, fuel float stuck closed. Disconnect fuel line at carb, if you have fuel there, the problem is at the needle valve or float; if no fuel. the problem liies between the carb and the tank, next methodical check would be the fuel filter, etc.