Service & Maintenance Question
I purchased Husqvarna 576XP G. the saw arrived at the dealer...escalated
Service & Maintenance Question posted August 28, 2014 by robert smith
, last edited August 28, 2014
, last edited August 28, 2014 591 Views, 6 Comments
Question:
I purchased Husqvarna 576XP G. the saw arrived at the dealer yesterday. dealer called, so I drove to get the new saw.
the saw will not start. it will not even try to start.
using the Husqvarna 95 octane pre-mix I was sold at the dealer because I was told "buy 3 Quart bottles and I receive a 4 year warranty".
I repair/rebuild chainsaws professionally as well as all 2 cycle/4cycle small engine mowers, edgers, etc.
I had a 100 percent success rate until I bought this saw.
I now have over 8 hours labor into this 576xpg and still no start.
here is the list of troubleshooting items that I have personally worked through.
1. spark test. good on the tester.
2. spark test. good on the spark plug being grounded to cylinder head while pulling the recoil starter.
3.fuel flow test. good thru the carburetor, filter, lines.
4.choke linkage test. solid and positive control.
5.throttle linkage test. solid and positive control.
6.start stop switch and wiring solidly connected at switch and igniter.
7.compression test. 156 psi at 5 slow pulls on the recoil starter. max 180.
8.flywheel removed to physically view the keyway on the inside of flywheel, and to evaluate the crankshaft keyway channel condition. both completely intact with positive lockup.
so the magneto rotation perfectly matches piston position tdc timed function. no problem there.
compression also easily evidenced by the fact that fuel atomization mist being forced up the compression release valve while pulling the recoil starter.
9.recoil starter components. recoil spring accurately coiled into the cassette shell and firmly secured into starter cover.
starter wheel intact and secured on the arbor, dogs engage firmly with positive catch into the spring loaded dogs on the flywheel.
10. crankshaft true thru rotation as the recoil rotates flywheel. no hint of a wobble at all.
11.2 different blends of fuel tried. both known and proven fuels that instantly start/run all other saws. (95 octane Husqvarna 50-1 pre-mix, and my 91 blend.
thru all of this on a brand new, just out of the shipping box, Husqvarna 576XP G will not even threaten to start after over 400 trys thru 8 grueling hours of troubleshooting and no result.
so please tell me why would you send me this saw?
please send me a new powerhead and allow me to start cutting.
the saw will not start. it will not even try to start.
using the Husqvarna 95 octane pre-mix I was sold at the dealer because I was told "buy 3 Quart bottles and I receive a 4 year warranty".
I repair/rebuild chainsaws professionally as well as all 2 cycle/4cycle small engine mowers, edgers, etc.
I had a 100 percent success rate until I bought this saw.
I now have over 8 hours labor into this 576xpg and still no start.
here is the list of troubleshooting items that I have personally worked through.
1. spark test. good on the tester.
2. spark test. good on the spark plug being grounded to cylinder head while pulling the recoil starter.
3.fuel flow test. good thru the carburetor, filter, lines.
4.choke linkage test. solid and positive control.
5.throttle linkage test. solid and positive control.
6.start stop switch and wiring solidly connected at switch and igniter.
7.compression test. 156 psi at 5 slow pulls on the recoil starter. max 180.
8.flywheel removed to physically view the keyway on the inside of flywheel, and to evaluate the crankshaft keyway channel condition. both completely intact with positive lockup.
so the magneto rotation perfectly matches piston position tdc timed function. no problem there.
compression also easily evidenced by the fact that fuel atomization mist being forced up the compression release valve while pulling the recoil starter.
9.recoil starter components. recoil spring accurately coiled into the cassette shell and firmly secured into starter cover.
starter wheel intact and secured on the arbor, dogs engage firmly with positive catch into the spring loaded dogs on the flywheel.
10. crankshaft true thru rotation as the recoil rotates flywheel. no hint of a wobble at all.
11.2 different blends of fuel tried. both known and proven fuels that instantly start/run all other saws. (95 octane Husqvarna 50-1 pre-mix, and my 91 blend.
thru all of this on a brand new, just out of the shipping box, Husqvarna 576XP G will not even threaten to start after over 400 trys thru 8 grueling hours of troubleshooting and no result.
so please tell me why would you send me this saw?
please send me a new powerhead and allow me to start cutting.
Details:
post script. I also shot pure starting fluid into the carb throat twice with no result.
perhaps I have overlooked something in attempting to start this gem of a saw. if anyone reading the saga may notice a step not tried, I welcome their input.
because at this point, I am stumped.
Answer
You need to contact your dealer and see what they are willing to do. Personally with it being just out of the box and it would start at all I would had the dealer to replace it; although, they do have the option of repairing it and would have not even did anything to it as this may voided your warranty..
The only thing you didn't list was trying a known good spark plug. I have a few that failed under compression but fired fine when just grounded to the an engines cylinder.
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the afternoon I picked up the saw I called the dealer and let him know the saw would not start. I was advised to troubleshoot the saw by the dealer.
after I went thru it all and still got no result, I mentioned just returning it. but dealer said it was a special order and he doesn't stock pro saws.
so no refund. the dealer wont be capable of making it start either. im an expert mechanic that does this professionally. the powerhead will go back to N.C. and Husqvarna will send a new 576xpg that will start.
if that is not the answer, then we litigate. pretty simple. impossible to void a warranty on a saw that has never been started.
it is very embarrassing for everyone involved in this fiasco, but 1st and foremost Husqvarna is the one that sent this saw out.
that black eye will probably never heal completely.
thanks for your response, Robert...
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I have tried 4 different brands of spark plugs. all of which are tried and proven in other saws. bosch, torch, champion, and 2 different heat ranges of ngk. all 5 of the plugs glow the spark test, and all 5 of the plugs show rocket fire in a darkened room grounding plug to jug.
I have never changed the factory pre-sets on the carburetor because it is functioning normally just as you would expect on a never before used 576XP G. fuel enters chamber, piston compresses fuel/air mixture, and magneto fires the jolt into the jug at perfect timing.
the compression relief valve is probably sticking open as is common on new husqvarnas because the supplier is manufacturing junk compression relief valves (common knowledge in this business and a joke to be honest), but even after blowing out the jug and carb to dry up and start over, not even a hint of a try to start. hell, im even up to trying ignorant things like switching on the handle heater, and switching it back off again.
in all of my extensive experience never before, so I guess there is a first time for anything. I have spoken nice to the gremlin, I have spoken not so nicely. I even offered to stick a little something in her tailpipe.
continuity thru the start/stop is proven good both with test leads and evidenced by the fact that when you switch off, you get no spark, when you switch on you do get spark. so why after all of this proving that it should start, do I get nothing?
please, someone out there, why, por que?
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problem finally solved. I don't understand why a stuck open compression relief valve would not allow a new saw to fire up.
apparently this crappy valve was made so sloppily that it allowed too much of the compressed air out and too much fuel in. so the compression value of 156 PSI with the valve closed didn't matter. what matters is that the compression value is high enough to force the atomization of fuel/air mixture to ignite. since I cannot measure the compression value valve open, the next time I work on a saw that will not start, I am going to remove that valve and plug the jug to see if it is a possible cause.
hey Husqvarna, find a new supplier for your compression relief valves. its an embarrassment to you out in the market...
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the new CRV that Husqvarna sent me has failed also. so I finally discovered the cure. place an O-ring over the stem of the CRV and allow it to act as a limiter between the button and topcap of the valve. the pressure of the O-ring pushing upward on the button causes the valve to partially retract so that it actually closes allowing the saw to start up and run...
this event makes it blatantly obvious that Husqvarna needs a different company making their CRV's...
any body reading this, Husqvarna?
I did not think so...
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Robert, thanks for posting and sharing this with us. We will send your comments to our product and engineer team.
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