PeacemakerJack 10,816 #1 Posted October 17 I’ve been looking for a 520HC for about a decade and haven’t found the right fit (price, distance, condition) until recently. My son @Coulter Caleb is purchasing his first house and it has an acre and a half of land in addition to a 125’ driveway. He needed a solid tractor for mowing and blowing. Then this one popped up on the local marketplace. It was owned by one man most of his life until his passing and then was inherited with an estate purchase. It is amazingly clean and original. The wiring is in fairly as produced condition. It ran great when we picked it up but it had several details that needed attention. finding a staple instead of a fuse was more than a little disturbing. this idler pulley was too big and the drive belt too worn and so it slapped on the frame rail making an annoying sound. I also noticed that none of the gauges were working on the dash (long story short, someone installed the wrong key switch). The tach and the rectifier were both toast and after finding some suitable used pieces with the correct key switch we were in business. Tractor was running good, charging good, and driving good 👍. then I pulled the fender pan, changed the rear end fluid/filter installed the rear hitch and cable (he may want to plow with it 🤔) and added the brackets for his bagger. Started the tractor several times to circulate the fluid while raising and lowering the deck. I was getting excited now! beefy looking horse💪🏻 I have never owned one of these (I still don’t technically—it’s Caleb’s) and I am amazed at how heavy duty certain items are! The last thing on my list was changing the oil and filter, then it was time to cut the grass. After the oil was changed, I started the tractor, went to grab something and came back just in time to hear it die😡. It sounded like it ran out of fuel. I checked the petcock and it was on. I started it again, and it ran for three or four seconds and died, then it wouldn’t start. After sitting overnight, I got it to start again but it only ran for about 10 seconds, then died again. Any thoughts on what to check first guys??? I don’t want to go on a wild goose chase. I’ve checked and lubed the 9 pin connector. I have the replacement key switch with good connections and lube. I’m wondering if it is the trigger module but I don’t know how to test that and I don’t want to take the flywheel off unless I have to… 5 1 Share this post Link to post Share on other sites
cafoose 3,504 #3 Posted October 17 1 hour ago, PeacemakerJack said: I’m wondering if it is the trigger module but I don’t know how to test that and I don’t want to take the flywheel off unless I have to… Mine was the module. It ran fine when cold but died and wouldn't start when hot. 1 Share this post Link to post Share on other sites
peter lena 9,528 #4 Posted October 17 @PeacemakerJack noting your reference to that drive belt IDLER PULLEY , known for lubrication failure , referral to belt bounce is typically incremental bearing lube hang up . causing stop / start bounce , have made a point of enhancing all of my idler pulleys , with similar / yet different pulley , allowing a wide grease shield bearing , hi temp polyurea grease , eliminates belt bounce , might also consider , adding some vent slotting on your drive belt guard , local , metal shop , can easily punch in what ever set up you want , bring over the guard , and ask , pete 1 Share this post Link to post Share on other sites
953 nut 62,687 #6 Posted October 18 23 hours ago, PeacemakerJack said: It sounded like it ran out of fuel. I checked the petcock and it was on. I started it again, and it ran for three or four seconds and died, then it wouldn’t start. After sitting overnight, I got it to start again but it only ran for about 10 seconds, then died again. Any thoughts on what to check first guys??? I agree that it sounds like a fuel system problem. To confirm that I would suggest mounting a temporary tank above the engine so it will gravity feed gas to the carburetor. If it runs well then probably just needs a new fuel hose 3 Share this post Link to post Share on other sites
c-series don 10,724 #7 Posted October 18 You probably already ready did this but I’ll say it anyway. Did you make sure the gas cap is venting? Or try running it with the cap loose? 2 Share this post Link to post Share on other sites
PeacemakerJack 10,816 #8 Posted 4 hours ago Well guys…this is a head scratcher! Thank you for all your input thus far… I went through and replaced all the fuel line, drained the fuel, checked the fuel pump—everything is working good. Checked the coil—well within spec. Then noticed that I had no power at the yellow wire to the + terminal on the coil. So, I went back through and checked connections. Took some apart and put them back together after cleaning a couple and squirting in some dielectric grease. I turned the key to check something, pushed a bit far, hit the start circuit and it jumped to life😱👏🏻. I turned it off after running it for a couple of minutes and then started it again! I don’t know if I have solved the problem because I didn’t definitely find anything. However, it sure runs good and goes like crazy now that I have everything cleaned and lubed in the hydro system. So…since we are getting a bunch of snow here and I need to get this thing working to clean out Caleb’s driveway…next up—install the Ber-Vac! I need some information that I can’t find and I’m hoping that one of you can help me out. I don’t have the lift arm (push arm), belt size, crank rod and support bracket. Can someone post some sizes for the belt and lift arm? Also any pictures of the lift arm and chute crank would be helpful. 2 Share this post Link to post Share on other sites
c-series don 10,724 #9 Posted 3 hours ago @PeacemakerJack @Ed Kennell had one of those blowers and recently sold it to someone here. I think maybe @ML3 ? So hopefully one of those guys can help you?! 1 Share this post Link to post Share on other sites
PeacemakerJack 10,816 #10 Posted 2 hours ago I love this forum…however, I’ve been away long enough that I forgot to do some searching around before asking questions. Found this link along with a couple of others. I still could use a belt length and the length of the lift arm… Share this post Link to post Share on other sites
Ed Kennell 43,469 #11 Posted 1 hour ago 1 hour ago, c-series don said: @PeacemakerJack @Ed Kennell had one of those blowers and recently sold it to someone here. I think maybe @ML3 ? So hopefully one of those guys can help you?! Yes ,I did sell it to @ML3. I don't have lengths for the belt or the push rod. The rod is a turnbuckle device about 12" long. Share this post Link to post Share on other sites
