hm12460 53 #52 Posted April 5, 2014 Yes, Wifey has the bug! Trying to talk her into cutting grass but she's not too excited about that prospect. I cut Granddad's grass today on his 2 year old Snapper High vac. 33" Disk drive.. Ugggh!!! Misery . Disk slips or tires spin ~ neither result in forward progress. Turning the wheel on the hill traveling up or down, is just a suggestion as the rear engine has no weight up front. Mower chassis (while made to flex) has the integrity of a wet cardboard box. I've gotta get the horse functional very soon. His yard is not huge but he is 91 and not able to cut any more. His neighbor cuts both yards with granddad's riding mower. Both yards are on a hill (Front and back). If I can get the horse up and running then his neighbor will keep on cutting. Fortunately the neighbor (retired school teacher) is anal about keeping the mower clean (compressed air and dry rags only) and in top condition. He stays on top of the minor maintenance. After today's adventure I'm wondering if I should be on the hunt for wheel weights... And I'm seriously re-weighing the Turf Master / All Trail decision (Need more traction but don't want to tear up the yard).. Pic 1 is from the east Grandad / pic 2 is from the west Neighbor (both are on extra deep double lots due to the hill) Ahhh yes! Typical Virginia. Beautiful place to live. Sometimes I do miss it. Share this post Link to post Share on other sites
Whitfield 14 #53 Posted April 6, 2014 (edited) After a few hours of research.... (Please correct me if I have bad information / or am shopping in the wrong place) My 42" rear discharge deck specs from the Toro Master parts viewer... (there were (4) different 42" RD Decks listed in 1991) Model Seri Year Description 15-42RC02 1000001-1999999 1991 42" Rear Discharge Mower 42" RD spindle threads: Top and bottom bearing use the same 109966 (Metric bearing) 6203-2RS (17mmx40mmx12mm) Toro WH Spindle (housing only) part # 114568 ~ Looks like around $40 from the big on line book seller named after that river in South America Toro WH Spindle (complete) part # 111726 ~ For around $110 Edited April 6, 2014 by Whitfield Share this post Link to post Share on other sites
Theroundhousernr 590 #54 Posted April 6, 2014 (edited) MAJOR EDIT... Never mind.... Edited April 6, 2014 by Theroundhousernr Share this post Link to post Share on other sites
cheesegrader 433 #55 Posted April 6, 2014 Sorry I can't help with the spindles. I'm going tear down my deck for the first time this month. I'm sure I will learn a lot (the hard way, as usual) I got aftermarket bearings, and am hoping everything else is salvageable. If not, I will hunt for used parts. Toro is WAY too rich for these kind of basic parts. The leak around the spark plug is concerning. Hope it is just stripped threads. Helicoils are expensive, and it might be cheaper to get a set of used heads and new gaskets. There are LOTS of heads for sale for about $50. You can clean out the carbon deposits at the same time, which is a good idea on an engine this age. The original plugs are no longer recommended. A dealer update letter now recommends a hotter plug, Champion RC14-YC .025 gap I just noticed the two different rear tires. Nothing like the learning experiences that come with used machines! Share this post Link to post Share on other sites
Forest Road 594 #56 Posted April 6, 2014 If the motor is rough save yourself some time and money. Replace it. Whether its a $300 harbor freight 13hp single or a Honda single or twin, Kohler single. Just get rid of that Onan. They sound great when they're running. Essentially they're ticking time bombs. I have a14hp Kohler single on my 314h that runs my 42" rear discharge deck effortlessly. Share this post Link to post Share on other sites
Whitfield 14 #57 Posted April 7, 2014 (edited) Thanks Forest, I'm sure there may be better engines, but I'm not afraid of the Onan. I'm always curious as to the common problems / solutions with new to me equiptment. I often find I'm not the first person to travel this path / repair. Asking for guidance from seasoned veterans can save time and money. My 520-H currently shows 746 hours. The onan is in good shape and runs out well. It will continue to faithfully serve ~ once I get the plug issue resolved. Heli-coiling a plug hole is no issue if that is what it actually needs. Very curious as to the root cause / is this a common occurance? But first, I need to determine is it cross threaded / loose / stripped. Unfortunatly I ran out of time Sat and had to rush clean up to make work on time (tractor repair is taking place at my Grandfathers / not my home / this will delay diagnostics). I'm an X-auto tech / state inspector (Currently in Mfg @ DuPont). After the timing chain / tensioner / water pump install on Wifey's Suzuki V-6 SUV with (4) cams and (4) timing chains ... I'm looking forward to spending time with the Onan. Edited April 7, 2014 by Whitfield Share this post Link to post Share on other sites
shorts 182 #58 Posted April 7, 2014 Leaking sparkplug might not be much of an issue, when does I blow bobbles, when you are cranking it with the starter, approximately 100 psi or when it is running with about 1400psi during the initial ignition combustion cycle? IIRC these Onans have square sparkplug sealing surfaces and metal gaskets between the plug and head and they are not as forgiving as the modern taper seat plug design that is self sealing. Pull the plug lookat the gasket and seat surface on the head, install a new plug and see what happens, if it needs more love cross that bridge when you get there. The Onan's are good engines, not my favorite but that doesn't make them bad, keep the fins and inside the tins clean and they last a long time and give good service. Share this post Link to post Share on other sites
leeave96 490 #60 Posted April 8, 2014 Heli-coiling the plug is a good idea - but keep in mind that there are some bad Onans on the sidelines that should offer some spare heads, if you need one. 111726 looks like the correct spindle assy. You might post a "want" add and get something for less $$'s. Share this post Link to post Share on other sites
GT14 243 #61 Posted November 9, 2014 Nice score wifey has a good eye. Share this post Link to post Share on other sites
rick 257 #62 Posted November 9, 2014 Sorry I can't help with the spindles. I'm going tear down my deck for the first time this month. I'm sure I will learn a lot (the hard way, as usual) I got aftermarket bearings, and am hoping everything else is salvageable. If not, I will hunt for used parts. Toro is WAY too rich for these kind of basic parts. The leak around the spark plug is concerning. Hope it is just stripped threads. Helicoils are expensive, and it might be cheaper to get a set of used heads and new gaskets. There are LOTS of heads for sale for about $50. You can clean out the carbon deposits at the same time, which is a good idea on an engine this age. The original plugs are no longer recommended. A dealer update letter now recommends a hotter plug, Champion RC14-YC .025 gap I just noticed the two different rear tires. Nothing like the learning experiences that come with used machines! Champion RS17YX is the latest recommended replacement, now running in my Onan. Share this post Link to post Share on other sites
KyBlue 655 #63 Posted November 9, 2014 Any updates since April? 1 Share this post Link to post Share on other sites
Whitfield 14 #64 Posted September 26, 2016 On 3/29/2014 at 4:03 PM, leeave96 said: Not fair - not fair!!!!! Nice looking machine. You probably ought to pull the seat pan and clean out around the hydro from the rear discharge clippings. Probably never been done. ^^^ I did this and pulled the engine tin for intake gasket + oil filter housing seal back in 2014. . . My grandfather passed soon after starting this project at his house. I went through some difficult times and lost interest. There it has sat outside under a cover since. AND now we are cleaning up his house getting ready to sell. SO I brought the mower home. I need to figure out what parts go where and get it back together. I am embarrassed I have let this project go this long.. 1 Share this post Link to post Share on other sites
Whitfield 14 #65 Posted September 27, 2016 Engine / Hydro trans fluid suggestions? I see Trans is 10w30 engine oil. Is synthetic Ok? I was thinking 15W-40 Rotella Synthetic for the engine. Share this post Link to post Share on other sites
Whitfield 14 #66 Posted October 2, 2016 (edited) Fuel line routing questions My 520H is all reassembled ~ Aussie's trans axle rebuild post is the best fuel line picture I can find so far. Any suggestions? Edited October 2, 2016 by Whitfield Share this post Link to post Share on other sites
Whitfield 14 #67 Posted October 2, 2016 (edited) Up and running now ~ 1. No solenoid trigger with key 2. No throttle control. I'm not familiar with the lawn equipment style spring / governer arm control system (More research) Carb idle screw is set too high. PITA to get to now that everything is reassembled. Edited October 2, 2016 by Whitfield Share this post Link to post Share on other sites
Whitfield 14 #68 Posted October 2, 2016 (edited) Carb screw was idled up to 2800 rpm because any lower and it is hunting for idle . . . More searching idle should be 1400 by these specs Edited October 2, 2016 by Whitfield Share this post Link to post Share on other sites
Whitfield 14 #69 Posted October 2, 2016 Carb is fixed, Idle and mixture dialed in. Throttle position set. Start circuit diagnostics: No solenoid trigger with key Safety circuits: 1 seat switch 2 Neutral switch on hydro shifter ??? Any others? Share this post Link to post Share on other sites
Ed Kennell 42,107 #70 Posted October 2, 2016 PTO switch Share this post Link to post Share on other sites
Whitfield 14 #71 Posted October 3, 2016 (edited) I've found the treasure map. FYI: Test drive = all systems go (Except for key start) and still no battery. I hung the automotive JNC 660 jump pack on the PTO lever. Deck not attached ~ New Deck Quill / Spindle / Hub assembly ordered. Edited October 3, 2016 by Whitfield Share this post Link to post Share on other sites
