William Chatham 1 #1 Posted June 9, 2012 Hey every one, i have a 94 312-8 im restoring, when i try to start it the only thing that happens is the two relays click, i checked the solonoied it is fine, im very lawnmower smart but i cant figure it out?? Share this post Link to post Share on other sites
Roanoker494 0 #2 Posted June 9, 2012 Going strickly by my automotive knowledge, if the selonaid clicks but the starter does not turn then the starter is likely bad. I am new with these tractors myself, but I also have a 312-8, so I reckon we will get to learn together. Share this post Link to post Share on other sites
William Chatham 1 #3 Posted June 9, 2012 i cheked the soloniod it is good i took a hot wire from the battery to the small lead on the solonoied and the solonoied clicked and turned it over. Share this post Link to post Share on other sites
canam1991 2 #4 Posted June 9, 2012 safety switch or low oil switch.... Share this post Link to post Share on other sites
William Chatham 1 #5 Posted June 9, 2012 i know how to bypass a safety switch but if its the oil switch how do i bypass it? Share this post Link to post Share on other sites
Roanoker494 0 #6 Posted June 9, 2012 If I could figure out how to upload stuff I just scanned a wiring diagram for ya......... Share this post Link to post Share on other sites
Roanoker494 0 #7 Posted June 9, 2012 I uploaded it here, maybe it can help you. Share this post Link to post Share on other sites
tunahead72 2,342 #8 Posted June 9, 2012 Careful with that wiring diagram, guys... Roanoker494, did the one you uploaded come from one of your 1985 manuals? If so (and I'm no expert), I'm guessing it's probably not the same as the diagram for a 1994 model. I'll let someone more qualified than me address the "no start" problem. And willc307, :WRS: 1 Share this post Link to post Share on other sites
Roanoker494 0 #9 Posted June 9, 2012 Good point on that diagram I posted, the manual does not have a date but it is suppose to be the original manual for my 85 model tractor. Share this post Link to post Share on other sites
Roanoker494 0 #10 Posted June 9, 2012 Here are a few diagrams I found for 92-97 model 312-8 Share this post Link to post Share on other sites
Wheel-N-It 2,967 #11 Posted June 9, 2012 Clean all your connections, and make sure the engine is full of oil before you bypass the oil switch. I would seriously doubt it is bad anyway. Usually the switches that go bad are the seat switch, and the ignition switch. Share this post Link to post Share on other sites
SAM58 30 #12 Posted June 9, 2012 I had a simular problem wit my 314-8, does it start sometimes? or nothing but the clicks. My 314-8 would click, and if I tried repeatedly it would eventually start. ( replaced soloniod fixed problem, I could cross it over and it acted like it was working like yours) Found a universal soloniod at the auto parts store for $12.00, yours is 18 years old probally need replace anyway. if it just clicks, remove the starter, clean starter, clean connections, try again, if no fix, THEN start looking at wiring problems. If it is full of oil, Replace the soloniod, I think that will fix it. 1 Share this post Link to post Share on other sites
leeave96 487 #13 Posted June 9, 2012 I had a simular problem wit my 314-8, does it start sometimes? or nothing but the clicks. My 314-8 would click, and if I tried repeatedly it would eventually start. ( replaced soloniod fixed problem, I could cross it over and it acted like it was working like yours) Found a universal soloniod at the auto parts store for $12.00, yours is 18 years old probally need replace anyway. if it just clicks, remove the starter, clean starter, clean connections, try again, if no fix, THEN start looking at wiring problems. If it is full of oil, Replace the soloniod, I think that will fix it. +1 I had the same thing with my 314-8 this Spring. Replace the solenoid and it starts like a champ. Good luck, Bill Share this post Link to post Share on other sites
varosd 1,185 #14 Posted June 9, 2012 Any luck getting it started? :D Share this post Link to post Share on other sites
can whlvr 991 #15 Posted June 10, 2012 does the starter turn over if you run a jumper direct from battery,if so then its the solinoid as alot of guys have said,this is an easy way to bypass it and see if the starter turns over,when my oil sensor was put in up side down after a rebuild(by me )absolutly nothing happened,so i doubt its the oil sensor, Share this post Link to post Share on other sites
William Chatham 1 #16 Posted June 10, 2012 I had a simular problem wit my 314-8, does it start sometimes? or nothing but the clicks. My 314-8 would click, and if I tried repeatedly it would eventually start. ( replaced soloniod fixed problem, I could cross it over and it acted like it was working like yours) Found a universal soloniod at the auto parts store for $12.00, yours is 18 years old probally need replace anyway. if it just clicks, remove the starter, clean starter, clean connections, try again, if no fix, THEN start looking at wiring problems. If it is full of oil, Replace the soloniod, I think that will fix it. I need to add that the seat switch has already been bypassed and the solonoied is good i tested not by arcing the starter and battery terminals i tested it by using a wire and toucing it to the battery terminal and touching it to the lead where the key switch goes in to solonoied and the solonoied engaged and it turned over. SORRY FOR BEING A PAIN does the starter turn over if you run a jumper direct from battery,if so then its the solinoid as alot of guys have said,this is an easy way to bypass it and see if the starter turns over,when my oil sensor was put in up side down after a rebuild(by me )absolutly nothing happened,so i doubt its the oil sensor, YES Share this post Link to post Share on other sites
William Chatham 1 #17 Posted June 10, 2012 As a temp fix i bypassed the key swith removing the key swith wire on the solonoied and hookig up a push button but its just temporary Share this post Link to post Share on other sites
boovuc 1,090 #18 Posted June 10, 2012 Hi Bill, When you were trying to start it, did you take notice to the idiot lights on the console? I have seen these lights glow a little on attempted starts where nothing happened. Watching the lights as I tried to start it back to back times revealed it would crank only when I didn't see a faint glow from one of them. Turns out that the board was faulty on one of the tractors and I had a bad wire from the PTO switch that mimicked the PTO engagement. It doesn't take much of a short or bad ground for the newer tractors to shutdown the starting sequence. Share this post Link to post Share on other sites
William Chatham 1 #19 Posted June 10, 2012 view pic here :) Share this post Link to post Share on other sites
tom hart 0 #20 Posted June 23, 2013 Does ably one know about a 1991 wheel horse 312-8 PCM board ? Can u buy them , repair them ? Share this post Link to post Share on other sites
tom hart 0 #21 Posted June 23, 2013 Does anly one know about a 1991 wheel horse 312-8 PC board ? Can u buy them , repair them ? Share this post Link to post Share on other sites
dsholler 54 #22 Posted June 24, 2013 Dunno if this helps Share this post Link to post Share on other sites
boovuc 1,090 #23 Posted June 24, 2013 Hi Tom, Those boards are attainable used right here in the classifieds. Do a post on the classified section for a "working" board. I'm sure someone has one they will part with. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,499 #24 Posted June 24, 2013 Low oil relay This circuit uses a relay that is normally closed. Low oil condition opens the relay which breaks the power to the starter solenoid from the ignition switch. Some 1989 8-speed models used a substitute relay Very important bulletin on servicing the low oil switch. It is easily broken. Garry Share this post Link to post Share on other sites
