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Governer help

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ravi

05-05-2003 20:02:38




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Please help.
I have a 52 8n with a governer that does not seem to work. if I put the tractor in any gear and go up a hill the rpm's drop by about 150. I can move the throttle lever up so the speed picks up to the set 1500 rpm's. I have rebuilt the governer by checking any worn parts. The only thing found were the balls had flat spots on them. the governer was adjusted to specs and installed. The tractor idles down to 450 rpm's and revs up to 2200 rpm's on the throttle quadrant. The governor spring has no play and the linkage seems tight. Is there anything else I can do ?

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Dell (WA)

05-05-2003 20:21:47




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 Re: governer help in reply to ravi, 05-05-2003 20:02:38  
Ravi..... how do you know the governnor doesn't work? Just because you can watch your 8N's proofmeter tachometer and see it loose 150 rpms when you go up a steep hill doesn't prove anything to me.

I check a governor by manually playing with the carb linkage while standing besides the tractor, when I goose the carb throttle shaft by hand, does the governor "fight me?"

Unless contraindicated by sparkies color, (you do know how to read sparkplug insulator color, don't you?) I'd suggest that maybe your carb might be a "tad lean". I'd try enriching the mainjet by 1/8 turn and see if that doesn't solve your problem. It could be incorrect sparkie timing, or sparkie centrifical advance. But it is so much eazier to enrich the carb a tad..... ...respectfully, Dell

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mjtex

05-06-2003 20:29:08




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 Re: Re: governer help in reply to Dell (WA), 05-05-2003 20:21:47  
Dell, others...I posted similar request other day. Have what appears as same issue...althrough i only get 3/4 speed at full throttle position, no reaction on 1st half of throttle quadrant. i have new carb. the gov does "fight me" when manually goosing...is that good or bad??? gov arm spring seems fine. snug when no throttle, stretches under full throttle, although still only 3/4 rms. when goosing throttle, rpms surge up, then immediately surge down as gov pushes back. ideas appreciated...

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Jim(FL) Dell ???

05-06-2003 10:51:26




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 Re: Re: governer help in reply to Dell (WA), 05-05-2003 20:21:47  
Dell, I have a question on your answer. No matter what the sparkies or fuel mixture are (but assume close or near normal), because the governor control is a based on engine RPM (centrifical force on balls and levers) would not a correctly funtioning governor react to increase throttle opening to account for the increased demand for power when going up a hill?
How is adjusting the mixture or sparkies going to help the governor maintain a "constant speed"?

I'm fairly new to the N-family myself and just want to increase by knowledge of this great machine.

Jim

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Dell (WA)

05-06-2003 11:18:30




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 Re: Re: Re: governer help in reply to Jim(FL) Dell ???, 05-06-2003 10:51:26  
Jim..... ...engine speed is ultimately determined by the relationship between load (plowing, going up hill) and throttle opening (power as available by condition of engine, air/fuel mixture, ignition timing)

And you're right, the governor trys to balance the required engine power as determined by the balls by opening the carb throttle.

The governor does NOT adjust the carb fuel/air mixture, just the carb air throttle which will suck more gas (power) outta the carb jet. But if the fuel/air mixture was incorrect, sucking more gas is still gonnna leave you with a lean (less powerfull) mixture.

That is why N-Carb has adjustable mainjet (power) and a governor, and why your automobile carb has a fixed mainjet and an adjustable foot operated throttle. (your foot is the governor)

The governor does NOT adjust the sparkie timing, the distributor's centrifical advance does that.

And trust me, you really don't want to plow or mow by using a foot operated throttle..... ..Dell

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tjw

05-06-2003 05:49:36




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 Re: Re: governer help in reply to Dell (WA), 05-05-2003 20:21:47  
Dell, How do you read a spark plug insulater color???

TJW



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MikeC

05-06-2003 06:43:08




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 Re: Re: Re: governer help in reply to tjw, 05-06-2003 05:49:36  
Here's more than you ever wanted to know about reading spark plugs...



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RAVI

05-06-2003 05:00:08




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 Re: Re: governer help in reply to Dell (WA), 05-05-2003 20:21:47  
Thanks for the help.
I will check.



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