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  #1  
Old 09-15-2013, 12:40 PM
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milo milo is offline
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27hp generac engine idle and governor

just bought this mower, runs and works great but idle goes up to 4300rpms and when you lower the idle down it don't go down fast like normal. im not to sure how a governor works well I know it works off engine rpm and weights to speed up rpms under load so anyway im hoping it just not adjusted right so they do not have to open engine to work on governor. anyone know if they had issues with the internals of the governor on these 27hp generacs?
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Old 09-15-2013, 06:03 PM
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Perform the Static Governor Adjustment first.
Perform Dynamic Governor Adjustment second.
Top no load speed (full throttle w/o blades) should NOT exceed 3800 RPM!
Attached Images
File Type: pdf Generac Governor System and Adjustment.pdf (1.37 MB, 48 views)
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Old 09-15-2013, 08:24 PM
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thanks for the info but I took it to the shop already last week. im more wanting to know if its common to have a issue with the parts inside the engine or if linkage not set right. I know this, when its not in the wot position there is a lot of play in all the rods so im hoping just a simple adjustment fixes it.
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Old 09-15-2013, 11:24 PM
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Quote:
Originally Posted by milo View Post
thanks for the info but I took it to the shop already last week. im more wanting to know if its common to have a issue with the parts inside the engine or if linkage not set right. I know this, when its not in the wot position there is a lot of play in all the rods so im hoping just a simple adjustment fixes it.
Sooo.......... What did you take it to the shop last week for? This problem? Is it supposed to be fixed and your still having problems over speeding?

Is it common to have an issue with the parts inside the engine or if the linkage is not set right...
Not common to have an internal failure for no reason, no... An internal problem with the governor is more likely to be caused by either a Static Governor Adjustment slipped, or not set right after reassembly. Or caused by the balljoint sockets/studs being worn on the governor arm and throttle shaft and coming disconnected which would allow the engine to over speed. In which case can throw a rod(s) or break the fly weights off of the governor gear. If a fly weight is broken, it will cause a slow return to idle and cause an over speed... If both weights are broken, it will not return to idle and constantly over speed at any throttle setting!

I'm not sure what parts you are refering to as "rods" that have a lot of play?
The "rods" with the black plastic ball sockets on them? There are 2 of them.
Or the links on the other side of the engine for the choke lever and speed control bracket?
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Old 09-16-2013, 06:47 AM
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Quote:
Originally Posted by milo View Post
when its not in the wot position there is a lot of play in all the rods

This is pretty much normal on any engine since the governor spring isn't pulling/putting tension on the controls......
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Old 09-16-2013, 08:13 AM
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jeff in AL
well I think you just told me my issue, ( weight broken, it will cause a slow return to idle and cause an over speed) that's exactly what it does. at full throttle it just revs up and then goes to like 4300rpm, idle down and slowly it slows down but takes like 5 to 10 seconds.
ok, next question, about how much time does it take to repair this problem? I want to be prepaired for what the dealer tells me it will cost to fix
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Old 09-16-2013, 08:27 AM
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You gotta remove the engine to replace the governor....2 1/2 hrs engine RnR..
Disassembly ,..cleanup...replacement of governor...reassembly....2 hrs...
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Old 09-16-2013, 04:06 PM
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4 1/2 hours total? I never pulled a engine out of zero turn but I think I could r and r engine in 1 1/2 hours. also looking at the manual it looks like you just pull engine cover off and its right there. im hoping no more than 4 hours total for labor for this job but then again I never did it but looks straight forward
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Old 09-16-2013, 07:47 PM
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Quote:
Originally Posted by piston slapper View Post
You gotta remove the engine to replace the governor....2 1/2 hrs engine RnR..
Disassembly ,..cleanup...replacement of governor...reassembly....2 hrs...
Depending on the mower, I would say 1.5 to 2.5 hours R&R time is typical.

I would also agree with the repair time of 2 hours which includes adjusting the valves!

Yeah, it's pretty straight forward...
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Old 09-17-2013, 01:24 PM
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got the call. $300.00 total with parts and labor. like 3 hours labor rest in parts. r and r engine like 1.5 hours.
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