Question about Comet GXD2527G Pressure Washer Pump

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I have a Pressure Washer VR2500 , 6.5 horsepower / 2500 PSI number on side 123K12-0134-E Residential - Excell. I do not know which is the oil drain plug for the Pump on the bottom. There is an Allens Wrench plug on the side. However when removed nothing comes out. There is also an Alans Wrench like plug towards the back, that does not want to come out. Which one is the correct plug and do you have a picture as I could not order an Owners Manual on-line? Please Advise!

Posted by david_owings on


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Hi and welcome to FixYa, I am Kelly
First here is the owders manual:

There are 3 versions of the VR2500 Pressure Washer.

1 being the VR2500 Type 0 It has the comet pump that needs no oil
2 being the VR2500 Type 1 Also with the comet pump.
3 being the VR2500-C Again with the coment pump

The allen set screws that you removed hold the bearings in place.

The only pump maintence required is winterization with either a winterizer EX80 or RV anti-freeze


The manufacturer recommends using

a pump protector/winterizer, such as

EX80, when storing the unit for more

than 30 days and/or when freezing

temperatures are expected. If a pump

protector/winterizer is not available,

*RV antifreeze needs to be run through

the pump as outlined in the steps

EXCell does make units that have an AR pump that requires pump oil. The VR2500 pump does not.

Thanks for choosing FixYa.

Posted on Dec 06, 2010

  • Kelly
    Kelly Dec 07, 2010

    Take a look at this link if you still have doubts about pump oil:

    The link lists all pressure washer pumps.. Except Comet. The majority of Comet pumps are dry sump pumps. Only the largers 3200 PSI and above Comet pumps have wet sumps.

    Additionally see this note::

    These pumps do not require the oil to be changed, the oil will last the lifetime of the pump. In the unlikely event of an oil leak, remove all oil and add the correct amount.

    (let me add catastrophic pump failure and overhaul would be a reason to change the oil)

    Thanks again for choosing FixYa.




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