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#1 dogsoldier OFFLINE  

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Posted May 23, 2012 - 02:09 PM

this has me stumped, not sure where to start.
i went out in the garage last nite to start my YT 16H to show my wife it runs, when we got out there it just cranked and cranked but didnt start. i checked for a spark and none. i just now went out and it fired right up, so i thought i would adjust the carb while it was running. it died a couple times and fired right back up. the last time it died , i tried to start it and no spark. seems like if it sets over nite after not getting a spark it will start.

any ideas? :confuse:

#2 JDBrian OFFLINE  

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Posted May 23, 2012 - 03:51 PM

Check your points if it has them. A wonky set of points will cause intermittent spark issues like that. All the connections in the ignition circuit should be checked as well including any safety switches and the engine chassis connection back to the battery. Then again it could be a case of WITS. Wife Influenced Tractor Syndrome. Symptoms include running poorly, smoking, back fires and not starting whenever you try to convince the spouse that your recent purchase was money well spent.

#3 dogsoldier OFFLINE  

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Posted May 23, 2012 - 05:00 PM

thats kinda the direction i was thinking , but wanted a 2nd opinion
in not sure if it has points either but we will soon find out after i get home from work tomorrow.

#4 KennyP ONLINE  

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Posted May 23, 2012 - 05:13 PM

I don't think this has points, but I could be wrong. It has a vertical shaft engine, right?

#5 dogsoldier OFFLINE  

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Posted May 23, 2012 - 05:24 PM

yes it has a vertical shaft kenny

#6 dogsoldier OFFLINE  

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Posted May 24, 2012 - 03:46 PM

well i pulled the shroud off and looked thru all the info i have for the motor and seems it has no points. i am thinking it is the ignition module that is causing the problem, but then again it may not be.
als .. there is a small flat module on the front of the shroud, what is that for and could that cause this problem?
ignition module

100_1705.JPG
and the flat module i was talking about
100_1706.JPG

#7 dogsoldier OFFLINE  

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Posted May 25, 2012 - 02:19 PM

UPDATE
i ran a ohms test on the ignition module and here are the results

with ohm meter sit on rx1k and black wire on laminations and red on kill - 10
with red on laminations and black on kill - 0

ohm meter sit on rx1 and black wire on laminations and red on kill 25
with red on laminations and black on kill - 0

this was done with battery out of mower

Edited by dogsoldier, May 25, 2012 - 02:20 PM.


#8 JDBrian OFFLINE  

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Posted May 25, 2012 - 04:13 PM

That flat module is the voltage regulator and if it's bad your battery won't charge properly. I'm not getting what you are doing with the meter leads. I have 0 experience with this type of ignition. Is the output of that module the spark to the cylinders?

#9 dogsoldier OFFLINE  

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Posted May 25, 2012 - 05:20 PM

thanks Brian
the voltage regulator is is working fine then.
as for testing the ignition module i am following the test as its outlined in the service manual for the motor. if you look at the pic i posted a couple post ago you can see the plug wires coming out the back. as for the test i dont think its checking for the spark since the motor isnt turning over.
here is a screen shot of the test
Screenshot.png

#10 dogsoldier OFFLINE  

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Posted June 22, 2012 - 01:43 PM

sorry to bring this back but something just came to me and i want to run this past you.
would the fact that the tractor has 2 flat front tires cause it to act like it does ?
i mean run for a while and then just shut off cause of oil

#11 KennyP ONLINE  

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Posted June 22, 2012 - 01:52 PM

That sounds like a safety switch issue to me. Sometimes makes contact, sometimes not. Not too familiar with these newer models.

#12 dogsoldier OFFLINE  

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Posted June 22, 2012 - 06:36 PM

i found the 2 under the seat, 1 is hooked upand the other has black tape around it . i cant seem to find the brake micro switch any place. once it cools down some ill start hunting it again.
i hate these safety switches :mad2:

#13 dogsoldier OFFLINE  

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Posted June 23, 2012 - 12:20 PM

no more safety switches to worry about and it ran for almost a half hour till it just shut off. when i tried to restart it and pulled the chock out it tried to run. i checked the gas and have plenty in the tank. i think the next thing to replace would be fuel line and filter and maybe ignition switch although the ignition switch worked in the other tractor just fine. anyone have any other ideas?
at least it ran lots longer this time :dancingbanana: which im real happy about

#14 patuca1999 OFFLINE  

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Posted June 25, 2012 - 02:28 PM

i'm having a similar issue with my yt16h. have all the sypmtoms you do. research/trial/error was leading me next to an ignition module being the problem, but i haven't checked all the safety switches yet.

have you had any progress lately?

i'll be following your thread to see how you're making out. will also throw my .02 in if i happen upon a fix.

thx

Mark
  • dogsoldier said thank you

#15 dogsoldier OFFLINE  

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Posted June 25, 2012 - 04:36 PM

i took the safety switches out of the mix so i know they are not the problem. im looking for shorts but havent found any. im also thinking about buying a new ignition switch even tho i dont think thats what is causing it. for some reason the new ignition module i bought isnt working and im not sure why.
if you figure out anything please post and let me know.




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