Oh No! This Obsolete Engine has NO SPARK. What Do We Do? 

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Taryl, it's people like you who keep the country and economy running. Fixing and maintaining things are more important than many people think.

WOW. So cool that Taryl chose my 520h for a video! : ) I have a good working 520h that is my primary mower that has 940 hours on it. I found this other one, non running, with 1600 hours on it and thought it would be good to have as a parts machine. But it was in a lot better condition overall than my original 520h so decided to take it to Taryls to see if he could fix it. He was not too enthusiastic about working on it, for all the reasons he relates in this video, but he agreed to do it. Elkskins found the parts I needed to order on Fleabay and I ordered them. Then after they came in, dropped them off at the shop. Hadn't heard from Taryl since then and was going to call him next week and see if he got anywhere with it and low and behold, I discover it's the subject of todays TFA video! : )

Fixing vintage gear is always a challenge. At the same time, it's nice to revive a machine that can be revived.

I'm a retired auto mechanic and have watched alot of your vids over the years and this was a very interesting repair. I will save this one under mower repair as this is my retirement hobby. You're the best Taryl!!!

This is HILARIOUS!!!! Really well done. "No! You mustn't go there! Even though it's just across the street next to the tree..."

That's a later Onan than what I worked on. They were used on Fairmont motor cars used for track inspecting. Points box easy to work on. Fuel pump mounted right on top easy to work on. Adjustable oil pressure. Carb mounted on top, easy to work on. Very reliable. All that crap packed into that tractor must be a pain to work on. Newer, bigger, better? Not so much. P.S. I have a CCK Onan on my mid '60's Miller welder/generator that still runs great. Easiest carb there is to rebuild. Thanks Taryl. Don't let them bury that Lawn Boy!

Thanks Taryl, you make the best small engine repair videos. I've learned a lot from watching them and have been doing my own repairs on my equipment.

Love these old Onans.

I had the same coil failure on a JD 420. I found the Cummins dealer that works on RV generators had what I needed. Not cheap, but they had it and a replacement carburetor " Nickey six" a few years later. The starter issue can be resolved with a JD relay kit. I have had that mower since 96' I probably will never get rid of it.

Yes, my local small engine shop, Garys place outta Hope MI said replace it all same time. Thanks for making this video!!!

Awesome video Taryl. I first learned to work on small engines when my grandfather gave me an old crapsman garden tractor with the 20hp Onan. Clutch bearing went out and quit running. He left the tractor on which fried the ignition. After replacing all ignition parts it was a sweet sweet sound of hearing that old Onan running again. Love your videos. Keep up the good work.

I had a fleet of four Sears Roper Onan-powered tractors for many years. I had the tiller and snowblower too. thankfully, I did not have the engine problems you did-please don't bury the Lawn Boy-they really were awesome mowers-my Dad used them for 40 years-thanks as always for the great videos, guys!

Terrific Chapter! Our old Wheel Horse 520 H/Onan with 1,500 hours was still working in 2012 but using a lot of oil while mowing the pasture at full throttle. Got a new Toro Time Cutter with Kawasaki OHV (and vertical shaft) V-Twin, a real work horse. Your video has inspired me to resurrect the old side-valve Toro/Onan still sitting in the shed, a fine garden tractor but as you say, hard to get parts. Thank You Taryl for your great videos, they have soul and they ring true! Did you ever notice what those 5 little holes at the top of the carburetor throat are for? When you turn the key, liquid fuel shoots out of them, giving a rich mixture and the engine starts right up every time. Clever!

I had an old Sears from the early 70s with a Onan, the guy used it for decades to mow 5 acres, plow his driveway, plus pull his lawn cart around to mulch his flower bed, pick up limbs etc. The hour clock stopped at 4300 hours a couple years ago, always used castrol oil. I plowed snow for 3 years, it sat a couple years and a guy uses it to mow an acre with it. Never did anything except change plugs,belts and front tires that i know of

I agree I’m not a fan of the newer Onans like the P series, but the old CCK cast iron Onan flat twins are some of my favorite engines ever. They actually have a stroke that measure longer than the bore diameter, something very rare these days in small engines. While that means they don’t like to rev much past the 3600 RPM factory rated speed they make excellent torque and it’s hard to find any attachment used in any conditions that’ll make one lug down. They had the points and condenser ignition so no worries about trigger modules burning up and the standard 12V “beer can” coil for them is cheap and easy to get. Then seeing old lawn-boy with the capstan drive self propel was cool , they’re some of the toughest mowers out there, IMO the F engine lawn boys with the later model 3 speed belt drive self-propel are the best mowers ever made. OMC sure knew how to make 2 strokes.

Your videos always help😊. Thanks for sharing this information with us .

Thanks Taryl, another great video. Learn something new every time you post! Good stuff. Never ever thought a permanent magnet would go bad.

Thank you for sharing the adventure ! Ity always something, especially old Onans ....

Nothing like the sound of an Onan!! They are well worth fixing up.

I love those Onans have a few on welders and Case Ingersoll tractor.

you kill me, love watching how you do this and keep a good humor at the same time.

Those old 2 cycle lawn boys were the best towers ever built i wished they still made them

You have some serious patience man. The only Onan stuff that I've ever seen has been on the RV generators.

Taryl I bought carburetors online for $17.00 verses $104.00 and it comes preadjusted. Only had trouble with one, and they gave me my $17.00 back, and told me to keep it. Also bought ignition kit it came with a plug, wire and electronic control, which were also very cheap and haven't had any problems. Also found a muffler for $24.00 online, OEM Price was $112.00. I got the rider mower for free. Adjusted the valves, which were way out of adjustment. So, it probably cost me no more than $60.00. And watching you do what you do is a big help. I am a retired car and ambulance mechanic. Thank you, Taryl, also those comic skits you do are funny as hell.

You are very correct about prices on obsolete equipment. Got a Onan B48M from 1982. Carb is $1057.00. There are guys that restore these. I still use mine regularly.

I have a JD 318 that had an Onan engine like Taryl's. I had one of the same problems, a valve seat came loose. The engine was tired and the price of parts to rebuild it was too high so I did repower it. Now it has a Honda V-twin and runs great! Totally worth the extra money for the added HP and reliability.

Thanks Taryl I had welded with a Onan engine on it, made by Studebaker motors it was fun too.

My onan is the only onan I've ever seen on a mower. It was on a old weed eater brand mower. I took it off and put it on my hustler 60 zero turn. Great engine. Pain the ass to work on

Link for the Onan kit here: www.ebay.com/itm/225800823416?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=QWFIrco5SrC&sssrc=4429486&ssuid=KGz36vw3Q6W&var=&widget_ver=artemis&media=COPY

I never thought Onan was a good motor. I have seen a lot of issues with them myself on bucket trucks and enclosed trailers that used them for power. Even when new, there were issues due to weather or mechanical/electrical problems that even repair shops couldn't fix for any extended length of time. Great video though as always!!!!

Sounds like Onan engines age just like humans! The older they get, the more things go wrong. Eventually they cost you a fortune to fix, and replacement parts are hard to get...🙂

Yes, I have used Small Engine Warehouse many times. Great company. Love y'all's videos, you are the reason I started making videos. Thank you all for all the hard work y'all have done over the years.

I love using your videos to help fall asleep. Since I have tinitus (constant ringing in my ears)

Different ignition system and one to watch for. Good info. Great video y'all 👍

Awesome an onan! Not alot of videos on onans ive got a. 416h i that has spark issues i think ill try this definitely if they have this kit for it! Thanks Taryl!

I used Taryl’s method of removing flywheels to get the pulley off a slasher gearbox. The pulley has 6 x C section sheaves and would weigh about 20kgs. The shaft is tapered and is 60mm at the top of the taper so it is all fairly big. I used some splitting wedges between the housing and the pulley and hit the end of the pinion shaft, with the thread protected with the nut, with a 10lb sledge hammer. It came off easily. Thanks Taryl, you helped me big time. The machine is not a lawn mower but it still cuts grass about 12ft at a time. Jeff

I wish I saw this 2 months ago. I sold my 520h becasue of no spark. Great video

Nice work Taryl! A belated Happy Birthday to Slippers!

Thank you for sharing.👍

Excellent. I believe I can get my P216 going now. Thanks you.

Very nice video Taryl and company! I look forward to the next awesome fix!

I didn't know there were issues with Onans. Always wanted one!

I have the exact same engine that runs pretty good. Now i know what to do if i ever have a ignition problem!Thanks

I learned a lot by watching your videos. Thank you.

Always love to see the skits.

I had a not-dissimilar experience with my 318. Just one thing after another. They were really neat little tractors. Last time I got it all fixed, I gave it a cosmetic restoration and sold it. It was a nice showpiece, but I don't think it would ever be a serviceable tractor again.

Yep! My P model Onan's electronic ign went bad too. Replaced it and it fired right up.

I've had my H-520 since 1989 and wouldn't think about buy anything else. This junk they are selling at the big box stores and super hardware stores are Chinese junk. Even these new B@S engines are assembled in the US with Chinese parts. I'm glad Taryl showed the new mod on the H-20 Onan. I'll pick one of those kits up for future use. Thanks Taryl for your effort.

East Coast Anthony's wig made wolf spit coffee across the room 😆 I'll send you the bill 😊

Every time I see or think Onan, I think Wheel Horse and the photos in the catalogs with the vertical blower shrouds showing themselves outside the hood. So glad I have my 1988 JD 260 with Kawasaki FC540V.

I have that exact same tractor with the same engine and runs great ours has that tiller on the back and is the best thing for the garden love to find a mower deck blade and blower for it some day

Great video. I have an B43M Onan in my 1982 Case 446.

love this ch been here from the start !!! leak master plumbing

Great skit and great vlog on that repair…👍👍👍

You got lucky with that self tapping screw. It almost pierced the wire bundle when you ran it through to make the hole.

Who else was saying put a rag in that carburetor please? Thanks for the info in the knowledge I've learned so much from your videos thank you Taryl and the crew.

Those old lawn boys made by Outboard Marine Corporation were great mowers

yup i have 1975 case 446 it had Onen 2 cyl and used in winter as well had motor all tuned up in fall and in winter 1 cylinder would fade in and out, i couldnt trust it the next year i repowered it with a Krowler!! best move i made

I have a 416 with the onan. Keep the shroud clear and don't idle them keep that fan spinning. Competitors don't last long enough to have the problems the Onan has.😮

Very funny Taryl.... One of your best!!!!!!!

Great video! Awesome info! i Love watching your videos! :)

WE LOVE ALL YOUR VIDEOS!!!

A few years ago, I found Onan parts at RV dealers . They dealt with alot of generators. Still expensive!

Always wondered what used a 9/32nd nut bolt thanks Be blessed

Thanks again for help Tuesday with the obsolete mower blade and sticker

Awesome video

Thank s for your videos!!!

Did that on a couple of small case skid steers. On a different note I love the Milwaukee fuel tools. I have that same ratchet, their die grinder, 3/8 impact and their 1/2 inch impact. Same as snap on for half the price.

Thanks for sharing

Reminds me of the time i had to remove the engine to replace the starter on my lamdlords homda ht3813 mower. It was a pain to remove the drive shaft to be able to get the engine out and hard to remove the flywheel nut cause i didn't have the right tools at the time but still managed to get it done

Taryl takes these wounded workers into his mechanical hospital and restores them, truly wonderful work and so ignored.

Always enjoy watching your channel

Just one thought about replacing the Magnet Ring. Newer magnets are made from Neodymium which has a stronger magnetic flux than was available 40 years ago. So that might be why they are better.

Great skit too!!!

this is such good content, your going places man! i love the style and vibe

So many things you can learn from a video like this...

You guys are a gas! To think my comment may influence on creative. Your team is a Joy and always educational. There's dinner. I own a 1996 Craftsman riding mower. ha

This video was really informative. I enjoyed it. I think Cummins now owns Onan.

Put another engine on that Lawn Boy. I have a nice old all - aluminum Craftsman mower from early 70s my dad bought new and I have been beating it to death ever since. I lost count of how many different engines I have had on the housing. It's nice and light and has quick change wheel adjustments.

I've wanted a john deere 318 since i was a kid. You have sealed the doom on that dream!

I sent this to Mustie1 and now you to see if either of you will make a video to show this to others how to accomplish this, just an idea. I see a lot of folks that want the ability to mow with the chute up for various reasons. They use bungies , string or a piece of rope and that to me is so inconvenient. I have never shared this, but I've done this set up on every riding mower I've ever owned and it's fool proof. Use a hook and screw eye's to latch the chute up . Tis uses 1 latching hook, 1 suitable spring and 3 Screw eyes. Attach one screw eye to the side of the rear fender and two screw eyes to the chute. Test the distance of them before drilling to ensure the screw eyes are in the right location. Attach one screw eye on the chute with a spring, and the other end of the spring to the Latch hook, The second screw eye is also attached to the chute just far enough to just give the spring a little tension so the hook can be latched to that second screw eye firmly when chute is being used to keep it secure. Now when you want to open the chute the hook can be latched onto the screw eye mounted to the fender to keep the chute up and out of the way. This method also allows the deck to be raised and lowered when the chute is raised. This setup is on my 1999 Scotts S20hp/48 which still runs and operates fantastic, and my 2018 46" Scrub Cadet XT1. So simple & inexpensive, but absolutely effective. That setup has been on my Scotts since 1999 with the same hardware I originally used including the spring. My Riding mowers are kept clean and in doors when not in use so I hope this helps someone , if not there's always the option of a bungie or a piece of rope. LOL

I am getting ready to overhaul an onan, it is a lot older than that one, it’s on an old Lincoln welder, points ignition and no starter, it powers the generator to start the engine. Oddly also getting ready to get into an old wheel horse tractor but it has a single cylinder kohler. I have actually considered repowering them both with harbor freight v twins

That blower shroud cover gave you a tuff time. It was the coil from a different boil that didn't give a spark . So its back to the ball game.

I hope someday the hope mechanics can reproduce parts at home .. I've gotten pretty ok in cad and 3d printing, next is aluminum sand casting, heads could be want to cast list :)

Hi Taryl I am a ret boat mech. Hack. carb spray try WD 40 it really does work and low comp it will also boost. . I really like your vids and stories.😊

I have a vertical shaftengine very similar. I had to buy one of those pick up sensors last year. $180

What a PITA that engine is to work on it looks like.

Definitely a throwback. Not bad.

I’m kinda missing my ole trusted friend “Ronnie”. The way he used to sail over the fence. A true athlete.

You the man Taryl

Love the show!

Taryl.... G.M. Delco coils on D.I.S. engines fire simultaneously just as these Onan coils fire. For 19.99 and a couple spade connections you can have a durable coil.

I did one for a friend. Worst part was getting it out of the JD tractor, but overall not too bad.

Great job

Wow I have never seen problems like that with Onan's they are almost always used in RV generators to this day. fixed one years ago on a snapper mini tractor. Sears ST/16 also.

awesome video

I’ve also got a JD 318 with a crank, no start condition. I’ve done all the testing and found it’s the ignition module. It’s a real pain to do.

You're right it does sound wicked that guys kroler did too.

Same as my 37 year old Lawnboy. Still have it and still runs. Rotting deck.