Honda GC135 2001 Owner's Manual

For the Honda GC135 engine, it is recommended to use SAE 10W-30 oil for general use.
The air filter should be checked and cleaned every 25 hours of use, and replaced if necessary.
The correct spark plug gap for the Honda GC135 engine is 0.7-0.8 mm (0.028-0.031 inches).
To troubleshoot starting issues, check the fuel level, ensure the spark plug is clean and properly gapped, and verify that the air filter is clean.
Before storing the engine, drain the fuel, change the oil, remove the spark plug and add a few drops of oil into the cylinder, and store in a dry place.
To improve fuel efficiency, ensure that the air filter is clean, the spark plug is in good condition, and use fresh, clean fuel.
To change the oil, warm up the engine, turn it off, remove the oil filler cap, drain the oil, and refill with new oil.
To adjust the idle speed, turn the idle speed screw located on the carburetor until the engine runs smoothly at idle.
If the engine is overheating, check for obstructions in the cooling fins, ensure the air filter is clean, and verify that the oil level is correct.
To identify fuel leaks, inspect the fuel lines and connections for cracks or damage. Replace any damaged parts and ensure all connections are secure.