Author	[Modern View]
Adam Brandt 03-04-2013 18:43:00 206.35.5.247 Report to Moderator	I have a 52 8N which I have been having an issue with. Basically after running for longer than 10 minutes, when I change gears and use the clutch it will act like it is going to die, and runs rough for a few seconds and if I ease into gear slowly it runs fine, but if I release the clutch fast it dies. I replaced spark plugs, checked for spark which is good, fuel flow seems to be fine, replaced the coil - no difference. I am not sure what else to check. The cap rotor and points are all clean and look good. I am thinking of replacing the spark plug wires, but they look good so I dont think that is the issue. Any ideas? [Reply]   [No Email]
rustyfarmall 03-08-2013 08:50:12 216.248.71.226 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-04-2013 18:43:00   If you are using one of those after-market, in-line fuel filters, get rid of it. The next culprit that comes to mind is that it might be time to check the clearance gap on the valves. [Reply]  [No Email]
Breeze Wood 03-06-2013 21:11:47 68.35.231.92 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-04-2013 18:43:00   I would say the tractor running well is what is best - compensating by widening the gap does the job and just resets the distributor for its advance - actually the points will open wide more so than less. [Reply]  [No Email]
Adam Brandt 03-07-2013 06:37:21 207.173.231.114 Report to Moderator	Re: 8N runs rough after warming up in reply to Breeze Wood, 03-06-2013 21:11:47   So I have done the following to troubleshoot the issue. I removed the carburetor, fuel line, reservoir bowl and cleaned everything. The Carburetor was extremely clean - no gunk at all in it. The filters were a bit dirty. I also removed the air filter and hose assembly and ran the tractor without it, and it seemed to run great. I did notice after some time that in the clear fuel filter I have the gas would flow fine for the first few minutes, then it would drip into the filter. I dont think it is getting enough gas. Again, it will run for about 10-15 minutes then it will act like it is starving for fuel - I pull the choke out it will run for a few more seconds then dies. I have the fuel turned on all the way, so it should be getting fuel from the tank. I drained the tank and refilled it, when I drained the tank it didnt look like any large particles drained out with the gas into the collection container. I also replaced the spark plug wires with a new set of copper core ones as I did notice that a few were a bit cracked and when I ran my hand across one of them I could feel electrical shock. The ends of the spark plug wires that run into the distributor were quite dirty and 2 of them were split down the middle. When the tractor runs now it runs very well and has more power - but it will still die after 10 minutes of use. Any further ideas on what to check next? [Reply]  [No Email]
GB in MT. 03-07-2013 07:24:33 216.47.61.196 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-07-2013 06:37:21   Adam; You say......:I did notice after some time that in the clear fuel filter I have the gas would flow fine for the first few minutes, then it would drip into the filter. I dont think it is getting enough gas. Again, it will run for about 10-15 minutes then it will act like it is starving for fuel - I pull the choke out it will run for a few more seconds then dies. I have the fuel turned on all the way, so it should be getting fuel from the tank. I drained the tank and refilled it, when I drained the tank it didnt look like any large particles drained out with the gas into the collection container. end quote! You are right ......you do have a fuel restriction problem.!!!! Could be in any filter, BUT my guess is......"running the fuel wide open" (which tells me that you are trying to run off the 'Reserve' section of the sed. bowl), and the reserve passage in the sed bowl is plugged up, not letting enough fuel get to the carb bowl, to run the engine!!! Thus the 10-15 mins of run time you have stated. MY ? would be/is.....How did you flush out/drain the tank.....through the sed bowl,...OR with the sed bowl out of the tank?????? Next.....Only open the fuel valve at the sed. bowl two full turns, then start the engine after waiting for the carb bowl to fill!!! If that extends yer run time and or fixes yer problem,....then you have found your run-time problem........(Sed. bowl screens are plugged inside the tank!!!!!) Just my WAG!!!!!! Gary :roll: [Reply]  [No Email]
ShowMEguy 03-07-2013 06:43:20 168.215.10.102 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-07-2013 06:37:21   After the 10 mins have you tried to see if the igintion switch is working? By using a jumper wire across your terminal block? if that didn't narrow it down I'd probably toss in a new condenser... As I don't know of a way to really test one of those... This post was edited by ShowMEguy at 06:44:15 03/07/13. [Reply]  [No Email]
old 03-04-2013 19:26:09 209.86.226.18 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-04-2013 18:43:00   Trouble shoot then parts not the other way around. You say spark looks good well make sure it is good as in Blue/white in color and will jump a 1/4 inch gap or more at all plug wires. Point gap on a side mount is 0.025 same as the plugs. Next when was the last time you serviced the air cleaner?? It could be full of water or ice and dirt. So does choking it help or hurt?? If it helps you may have a clogged main jet if it hurts go back to the air cleaner and or the main jet is to far open and it is running to rich but you should see black smoke if that is the case [Reply]  [No Email]
JCinKY 03-04-2013 18:54:11 166.205.55.36 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-04-2013 18:43:00   Front mount point gap is .015 that's a long way from .125. Not sure if you can even get points that far apart. Sparkplug gap is .025 [Reply]  [No Email]
old 03-04-2013 19:22:21 209.86.226.18 Report to Moderator	Re: 8N runs rough after warming up in reply to JCinKY, 03-04-2013 18:54:11   He said a 52 which makes it a side mount and point gap would be 0.025 [Reply]  [No Email]
JCinKY 03-04-2013 18:51:14 166.205.55.36 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-04-2013 18:43:00   Quoting Removed, click Modern View to see By dropping the clutch all the extra load is dumped onto the governor in a hurry driving the throttle plate open. Try opening up the high speed needle about a half turn. The engine will go lean for a second with that throttle plate wide open. The N clutch should general be slipped into action. [Reply]  [No Email]
Adam Brandt 03-04-2013 19:03:23 206.35.5.247 Report to Moderator	Re: 8N runs rough after warming up in reply to JCinKY, 03-04-2013 18:51:14   I am new to the 8N carburetor. Which one is the high speed needle? Also what is the best way to adjust the gap of the points, should I use a spark plug gapper? [Reply]  [No Email]
Dell (WA) 03-04-2013 20:41:05 71.217.125.18 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-04-2013 19:03:23   Adam.......the M/S carb has 2-adjustment needles. The down-pointing mainjet is best set to 2-turns and LEAVE-ITT!!! The side-pointing idlemix is adjusted for FASTEST idle, NOT SMOOTHEST idle. Understand the DIFFERENCE??? The behind the carb idle speed is adjusted for a SLOOOooow 400rpms. (ennythang under 500rpms is good) The last time I adjusted the idle on my eazy starting 6-volt 52-8N, the idlemix screw was about 1/8-th turn. Remember, the side-pointing idlemix is BASSACKWARDS; out fer lean; IN fer ENRICH. As for ignition points gap=0.025". A sparkie gap round wire can work iff'n yer careful. Remember to clean/polish the ignition points after installation and adjustment (0.025) Me? I use a clean $1-bill clamped between the points and pull. Iff'n yer really cheap, tear a strip from HEAVY brown paper grocery sack and use that. As fer yer ruff-runnin' when warmed-up; yer weaksister ignition switch starts causing weak sparkies after about 15-mins. New switch, $15 (cheap) .........Dell, yer self-appointed sparkie-meister [Reply]  [No Email]
Breeze Wood 03-04-2013 18:50:36 68.35.231.92 Report to Moderator	Re: 8N runs rough after warming up in reply to Adam Brandt, 03-04-2013 18:43:00   might try a wider gap for the points - my frt mount 49 runs best with a gap just under 1/8" ... [Reply]  [No Email]
old 03-04-2013 21:40:16 209.86.226.11 Report to Moderator	Re: 8N runs rough after warming up in reply to Breeze Wood, 03-04-2013 18:50:36   AS per the manual front mount point gap is 0.015 which a 49 would be. This guy say he has a year that would be a side mount and again as per the manual the point gap is 0.025. If you have to set your points to what you said you have bigger problems like bad distributor bushings and you need to fix that [Reply]  [No Email]
teddy52food 03-04-2013 19:17:54 184.94.175.179 Report to Moderator	Re: 8N runs rough after warming up in reply to Breeze Wood, 03-04-2013 18:50:36   I don't think there is enough lobe to open them 1/8 inch. [Reply]  [No Email]