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Posted on Jun 24, 2009

Where can I download a manual for a Dp3750 Dewalt pressure washer with a Honda GX 390

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  • Posted on May 27, 2010
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We need a manual for our pressure washer 3700 PSI, 13 HP-GX 390. How do we get this?

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.
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Got a Dewalt 3800 PSI Pressure Washer with 4.0 GPM with a Honda GX 390 gas engine. Tipped it up to roll it out to my truck and got a big puddle of water with what looked like Pump oil in the puddle. Can...

Could very well be. Did you check the oil level and condition of oil? If its too full or if its light brown milky, then water has entered crankcase. Pressure washer pumps cannot stand to ever let run dry. Even a little. Also excessive idling will overheat pump if it doesn't have a thermostatic relief valve that allows some more cool water to enter pump.If it doesn't have one add one. Find your PUMP mfg and model number. IF it's pumping good now and no leaks, quick replacing the seals will save big future repairs. www.pressure-washer-parts.com has lots of info on many pump manufactures. Or get some seals from dewalt.
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Honda gx 390 only starts when it feels like it

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Timing a 13 hp GX 390 Honda engine

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