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Old 09-04-2019, 01:40 PM   #1
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Pressure Washer Pump - Oil Change


Hi gang -

I have a Troy-Bilt pressure washer that I bought in 2003. I use it once a year or so for deck and siding; I would be amazed if it even has 150 hours on it. Recently, it was running rough and dying out after the engine ran for about 10-15 minutes. I took it into a local shop with a decent rep and asked them to fix that issue and give it the once-over.

When I got it back not only was the running issue not corrected but, as the pump heated up, oil began coming out of a vent hole in the oil fill cap. I am convinced that they topped off the pump with a lower weight oil than the recommended 75w90, thinning out when heated and being ejected. I want to get rid of the old and replace it but there is no drain plug or fill sight. Additionally the fill hole is blocked by the internal mechanisms.

Leak - https://i.imgur.com/qFxt9B9.jpg
Model - https://i.imgur.com/orCZj5W.jpg
Fill Hole - https://i.imgur.com/MpgLHPA.jpg
Pump - https://i.imgur.com/vuBpCGX.jpg
Pump - https://i.imgur.com/x5laGAu.jpg
Pump - https://i.imgur.com/0oswa7x.jpg

I am looking for suggestions as well as pump specs for oil replacement quantity. Thanks!
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Old 09-04-2019, 07:36 PM   #2
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Re: Pressure Washer Pump - Oil Change


Self-answering and posting for anyone that might search in the future...

Annovi Reverberi Pump Model SJV3G27

Instructions & Parts Manual:
http://www.etscompany.com/pdfs/sj-xj-om%201006.pdf

Turns out than the unit has to be removed for draining in this "maintenance-free" pump. I went all 60s old-school and just turned the whole machine upside down to drain it. Refilled with 4.5 ounces of Mobile 1 gear lube, 75w90. Use it for 45minutes with no spewing from the crankcase vent.
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Old 09-04-2019, 09:14 PM   #3
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Re: Pressure Washer Pump - Oil Change


It seems a lot of small engines don't have drain plugs these days. So you solved the pump problem, but does it run any better after being in the shop? Sounds like it might have been a fuel problem.
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Old 09-05-2019, 11:31 AM   #4
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Re: Pressure Washer Pump - Oil Change


Runs fine once it starts. I cannot figure out why it takes about 20 pulls, long after I smell fuel in the carb.
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Old 09-05-2019, 08:46 PM   #5
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Re: Pressure Washer Pump - Oil Change


Quote:
Originally Posted by DarwinsFlinch View Post
Runs fine once it starts. I cannot figure out why it takes about 20 pulls, long after I smell fuel in the carb.

Check the plug after a number of pulls. If it's wet, you're flooding it; try less priming or less choke/more throttle (or you've got a weak spark). If dry, it's not pulling fuel, perhaps a leaking carb gasket, stuck float.
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Old 09-09-2019, 09:42 PM   #6
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Re: Pressure Washer Pump - Oil Change


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Runs fine once it starts. I cannot figure out why it takes about 20 pulls, long after I smell fuel in the carb.
buy one with a honda engine.

I have a 32 year old pressure washer I still use to this day with a honda engine. 2 pulls and it starts.
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Old 09-10-2019, 06:32 AM   #7
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buy one with a honda engine.
Not really a fix, though, is it?
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Old 09-10-2019, 08:06 PM   #8
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Re: Pressure Washer Pump - Oil Change


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Originally Posted by DarwinsFlinch View Post
Not really a fix, though, is it?
Its the best fix, as youll never have to fix it.
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