Troubleshoot Replace mower PTO CLUTCH

hey YouTube thanks for checking out my channel today and I'm back in the garage I'm working on a mower for a customer and his complaint is that his PTO shuts off after a period of time also his fuse blows occasionally that powers the entire tractor there is a main fuse I'll show that to you in a second here so we got the mower we've tested it out and although the PTO works to some extent there is an internal short so this is a problem that some of them may have and you might be experiencing so basically your symptoms if you have a simplicity like this one which you see it's a reagent it's a 24h that's what the hood looks like there it's a 2007 it's a part number two six nine zero five seven six it has a 24 horse engine on it although this one's been replaced and now it has a 23 this guy mows about six acres and if he goes from the front of the property the back of the property he can only make like three passes and then it shuts off the PTO this is what happened the first time whenever I went over and checked it out the fuse had been blown on it I pulled the fuse I put a new fuse in it started it ran I told him that it might have just overheated he tried to mow with it and at that point the PTO shut off I checked for shorts and the wiring I checked everything and there wasn't any problems with that it's just that the clutch has warped to the point it has an eternal short of some kind or when it gets too hot it shuts off now there are adjustments that can be made and you can check other videos on YouTube to the clutch to where you can set the air gap with a feeler gauge that's not the case with this one the air gap is fine that's the first thing I went to but it still shuts off after you've mode with it just a short time what I did was i bypassed the switch the PTO switch because whenever your clutch your PTO clutch is starting to go bad it will burn out the factory switch and I'm talking about the knob that you pull the yellow knob on the dash it'll burn that out I'll melt it or it causes it to fail internally so you have to spend fifteen twenty dollars and get a new switch the problem with that is that new switch is not going to last very long because that clutch will heat up and get to the point where it will short and cause that switch to go bad again like in this case which we kind of knew that might have been the case so what I did in this instance is I took the switch i bypassed the main part of the switch that actually turns on the blades I connected the switch to the rest of the wiring to allow the safeties to work because the switch has to be plugged in for the mower to start and run and continue to start and run however the part that actually turns on the blades is the part that fails so I bypassed that with a separate switch but I flunked the PTO switch in to allow the tractor to start and run after mowing just a short period of time it shuts off the PTO and it may blow the fuse so I already ruled out the switch I know that the switch needs replaced but I also know that a new switch is just going to burn out again so at this point I've got to replace the clutch let me show you what that looks like here's the clutch it's a 1 6 8 7 2 9 6 SM it's electric clutch it's an original Briggs & Stratton and these are all the parts that you get this is the main assembly itself here's an pulley assembly here's a little jumper here's a nut here's a brace here's the bolts for the brace here's for the crankshaft there's a lock nut a tie to keep the wires up off of anything that moves so this is what you get I'm going to put the link down below click the link if you're having this problem that I described pick up the clutch replace and everything will be fine I'm going to show that to you what I'm going to do is put this new clutch on I'm going to show you the old clutch ok so we're going to go under the dash here I get a light already in place and if you don't know your mower has a main fuse that is in here now this one is blown so I'm waiting for another one to be delivered here if this fuse is blown the tractor will not start it will not click it will not turn on the lights it won't do anything this fuse has to be in place for the tractor to operate now if this fuse doesn't blow the PTO still could be causing a problem with the PTO switch causing it to fail or maybe not fail but the PTO clutch itself could be overheating and shutting off now we're at the back of the tractor and you can see I have the safety switch out of the seat and I have it zip stripped down so it's depressed the reason you do that is you don't want that switch to have failed because if that switch fails randomly you're going to have a problem because it's going to shut off the PTO there has to be an occupant on the seat with the key on in the on position for that PTO to work so if that switch is bad in the seat you're not possibly going to have your PTO coming on so don't miss diagnose your PTO being bad when it could just be the seat switch now with me having that seat switch wired up the way that I do I know for a fact that it's being dissed and it's still not allowing power to go to the PTO clutch so let's go ahead and put this new one on and I'll show you what it looks like then before I tear off the old clutch I want to show you a couple of things because I'm sure I have a lot of people that are wondering how did I bypass that factory switch here's the factory switch I've pulled it out of the dash and then i reinserted it to the plug under the dash and it's plugged in just like you would think the switch would have been all except for these two wires which I did what they call a back probe and I've pushed them in the backside of the PTO switch harness and ran them up to another switch so this switch here all it does is provides positive power through that cable and the way it does that is it connects the positive wire that is running up to the plug whenever the keys on there's power to it and it allows that power to go down to the PTO switch so what that does is allow the other safe connections to be made whenever this switch is pulled like that then when you want the PTO to actually engage to test it out you can pull this now the only reason you would need to do that is if this switch has gone bad which I know this switch is bad but I didn't want to spend fifteen twenty dollars on another switch to have it go out again trying to test the PTO now have the tractor up in the air support it on the crane and I just want you to get a good look of what it looks like underneath the mower the reason I'm doing this is I know a lot of you don't have a crane accessible and you're going to be doing this in your driveway with the deck off as long as you have enough distance to pull that bolt out of the crankshaft you should be okay I am going to use an impact to pull it off but I'm not going to show you step-by-step there's other videos that are online that already do that I'm just going to show you what it looks like here before I take it off and then I'll show you the new one alright I got the old clutch off let's compare it with the new clutch because there are some differences the first thing I noticed with the new one is this snub that's sticking up here that's not on the old one the old one is flush it's actually recessed but it looks like that that's an improved design feature because this actually fits up into the drive pulley a little further they give you a drive pulley with the kit and you can see there's a recess here and a lip so it was concerned when I saw this if it would work with the old drive pulley well if you look at the old Drive pulley it has that same recess and a lip inside and when compared to the new pulley it's the same height the same diameter the same depth for the belt to ride the same distance on the snubs everything's the same so it looks like the clutch if you don't want to change your drive pulley or if your drive pulley stuck on the engine which it could be you can just go ahead and put this new clutch on there and it will work just fine the other problem is this end is obviously not the same as what I took off this is what I took off so that's why they include this jumper wire to convert it over to this end here another difference is this right here what this is is the brace that bolts to the bottom of the engine and the bottom of the frame underneath and this tab then goes into the hole on the clutch to keep the clutch stationary whenever you engage it this is the thing that keeps it from spinning and twisting your wire completely off so you've got to have this obviously on here you can see that they're the same as far as the holes concerned on the PTO however the difference is that this one being flat in like a bar stock where the stock one that's on the tractor it's round you can see that's totally different and I'll show you why they made it the flat style now the reason they went to this flat one is so that there's more surface area holding this from spinning because as you turn this PTO on and off there's always movement plus the blades are slacking up sometimes or there's more tension or less tension so this is always kind of banging around in here so you need as much surface as you can against this hole to keep this from spinning as you turn it on and often as it's running and it's being jerked around you can see what's happening to the factory style that round bar is wearing out a spot on that hole because the contact surface is so small so although I could just go ahead and bolt this new clutch on and it would probably be fine for another eight years I'm going to go ahead and do the upgrade and put this bar piece in place of that round stock so we'll get a little bit better holding power on this clutch and it possibly won't wear out prematurely like this one because this potentially could have cracked and broke this should keep that from happening another big difference between the two I failed to mention earlier was that there's a key way that is on the shaft that is separated from the original pto clutch this one has the keyway built into it so make sure you take out that old one and get rid of it because the new one doesn't need it alright so I got the new clutch on there let me show you what that looks like real quick you can see that this bar stabilizer for the pto clutch actually goes into this open slot right here the wire goes in here I've got it secured to the other hole that's right here and then I've run the lead since it's so long all the way up into the frame instead of it connecting below I made it connect up above I'll show you that here's the lead that's coming out from below like I said it's really long then I have that jumper wire that they provide you to convert it over to the old style connector and I brought this connector up from below because it used to connect down below now what I'm going to do is just secure these up with a wire tie do the same underneath like I showed you there you don't want this dropping down and rubbing on a belt or steering or something like that to where it can get pinched so I'm going to secure this up and reconnect the deck in the belt and we'll go from there alright so I get it all back together you can see there I took it out mode and it works fine so going back and recapping when I said if you have one of these mowers or mower similar to this and your blades just quit working one day and you check the air gap on your clutch and it is set correctly then at that point you may want to look at your safety switch on your seat or also the PTO switch now if the PTO switch is bad it could be that the clutch also is bad and caused the PTO switch to burn out so you've got to be careful with what you're buying and do the simple things first you'll probably want to get a multimeter you want to check to see if there's voltage going to the switch you want to see if there's voltage coming out of the switch if there's voltage coming out of the switch all is good and you'll check that down at the PTO clutch that just means your PTO clutch is bad however if you're not getting any voltage out of your switch then you know your switch is bad but you've got to figure out why it went bad and it could be that it's the clutch so plan on spending the kind of money that we did here you're looking at it probably close to three hundred dollars total between the switch and the clutch again I'm going to put the link down below for the clutch click the link it'll take you right to it you'll get it shipped to you right away and hopefully this will help you out I appreciate it if you like this video click like or subscribe and I'll try to get more on this like it thanks bye

Channel: Foxboss9

Views: 721,036

Keywords: mOWER, RIDING, RIDING MOWER, pto, clutch, electric, magnetic, switch, fail, repair, replace, craftsman, sears, simplicity, regent, landlord, cub cadet, huskee, lowes, home depot, mtd, yard machine, toro, troy bilt, blades, blade, deck, turn off, wont come on, heat, airgap, fix, Lawn Mower (Product Category), briggs, honda, kohler, cut, grass, belt, Power Take-off, Toro (Business Operation), Start, Sports Game (Industry), shut off

Id: djX6dudCs6k

Length: 13min 55sec (835 seconds)

Published: Wed Jul 15 2015