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For the engine, not the pump, 10W-30 is what Briggs puts in them, but SAE 30 is acceptable if your are not running the pressure washer in cold temperatures. I highly recommend you use synthetic oil in any air cooled engine.
See link; the OEM part # is a 5.3 OZ. bottle http://www0.shopping.com/xPF-Briggs-Briggs-Stratton-Synthetic-Pressure-Washer-Pump-Oil-5-3-oz-190585GS
probably either a clogged fuel pump or a clogged air filter.
Honda K2400HH pressure washer pump how much oil do you need to put back in
A Karcher pressure washer pump requires 15W40 non-detergent oil. It takes 4 ounces and doesn't need to be changed because the oil will last the for the lifetime of the pump.
Nothing!
Nothing!
How much pump oil goes into a Troy Bilt Pressure washer Model 020242
5 oz
Yes, but not very well. The small pump within a pressure washer is designed to PUSH water, not pull it- and the rate of flow is very small. It would pump a long time to move a major amount of water. The pump will also not handle dirty water very well.
If it has no pressure your problem should be on the pump. The three things I'd recommend you to check are: Packings, Unloader and Valve Kit.
Closed or faulty fuel valve, clogged or faulty inline fuel filter, improperly installed or broken fuel pump (if equipped).