Timing a 13 hp GX 390 Honda engine

This appears to be relating to an Ingersol Rand Air Compressor rather than anything in the Honda Garden category? Make Model (What is is) in all questions please.

https://www.indiamart.com/proddetail/ingersoll-rand-t30-air-compressor-electric-motor-driven-tank-mounted-compressor-package-15hp-22929260312.html

According to my research is has a 20HP 3-PHASE ELECTRIC MOTOR. There are some other tihings to consider. When you are running this Honda gas engine, you are filling your workshop with deadly carbon monoxide gas.

Your Honda GX-390 is only 11.7 hp (8.7 kW) @ 3,600 rpm, not 20hp so it is doomed to failure. Also, how are you going to get it to cycle on when the tank needs it.

Take your existing electric motor and get it repaired or rewound. Much cheaper option for a safe working environment and doing the job it is meant to.

https://engines.honda.com/models/model-detail/x-large-gx

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Voltage regulator, carbon buildup in the cylinders, the carburetor may need overhauling, engine governor may have a stretched spring, Spark plug may need replacing, Timing may be off, air filter may need changing, and lastly, your load may exceed the ability of the generator.Checking this list will uncover the loss of power

you have a dingo, ugh
I would suspect a bad pump or wheel motor if the rpms are set correctly and no safety switches are causing it to die...

15 seconds it is running out of gas. check flow from the tank.

check the valve adjustment

Check the crank sensor wires

The numbers you have listed are for the engine, Honda doesn't actually make pressure washers but makes the engines. If you are looking for the manual on the pressure washer itself you are going to have to find some other numbers that should be listed on the frame of the machine.

Make sure the engine is not full of paint or dust debris in it's cooling system. If the fuel mixture setting is very lean, it can cause overheating. Make sure the fuel tank vent is open to prevent fuel starvation. Does the engine seem to be running at full operational speed? If not, it will be short on developed horsepower. Make sure the water source is not partially shut off. Hope some of this helps!

Sometimes you have to lower the air pressure in the tank to allow it to run. The back pressure from the compressed air in the compressor head overcomes the pressure created in the engine at the slow RPMs you are able to pull while attempting to crank it.

http://www.honda-engines.com/Engines_owners_manuals/ownersmanuals/gx390.htm

Hi, this is manual for engine only. maybe of some use.