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What type of oil do I use for generac 7550 exl generator and how much

Posted by Ken Karaczewski on


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Wayne McNeil

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Usually takes a quart of sae30.

Posted on Jul 12, 2019



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5w30 syn or straight 30w about a quart and then check the stick

Posted on Jul 12, 2019


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What kind of oil do you use

Judy, Generac portable generator oil recommendations. Above 40°F, use SAE 30. Below 40°F and down to 10°F, use 10W-30. Below 10°F, use synthetic 5W-30. Oil should be changed after the first 8 hours of operation and every 200 hours of run time thereafter.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

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1 Answer

My 7550 exl runs to fast

The generator needs high RPM to produce the right voltage.

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Generac ix 2000 does not start. checked spark plug and it is good. oil good.

what a **** generator, worked for 100 hours and now wont start anymore.
did all the checks and replacing of spark plug and oil etc, simply wont start, ****, ****, ****..... service is horrible too. they just give you the runaround.

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1 Answer

Need Users manual for Generac 4000 EXL generator

Hi and welcome to FixYa, I am Kelly
Below is a list of all the manuals an owner should have:

For the 4000 EXL Your actual model number is 01645.
Operators manual:

Wiring Diagram:

Parts List:

Thanks for choosing FixYa,

May 18, 2011 | Garden

1 Answer

Generator was running and quit delivering voltage while running. Turned it off and then restarted and checked voltage with no load. no smell...plenty of oil...seems like a breaker8000 exl...#...

It very well may have been a breaker that opened up permanently.

But, I bet that the generator was under heavy load for prolonged time, and one / both of the diodes in voltage regulator have opened up. You will have to disassemble the end housing of the alternator to get to these, and then test with multimeter to know for sure.

Of course, your generator may have an electronic controller, and not use diodes / capacitor at all. Since don't have model #, can't be sure.

If engine has dropped much under 1800 (4 pole alternator) or 3600 (2 pole alternator) RPMs, then alternator output would tank or be nonexistent.

Dec 09, 2009 | Generac Electrical Supplies

1 Answer

My EXL 8000,,,,is running but no AC output. Circuit breakers will not reset? Thanks

There should be a "full wave bridge" which consists of three diodes that converts DC to AC. Try your local alternator shop before taking it in to a certified repair center.

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Craftmans generator

Snake oil if its a sears (ie likely generac) this oil will be just as good of an investment as this POS genny is

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