HOW-TO - Small Engine Crankshaft Swap

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HOW-TO - Small Engine Crankshaft Swap
Ever wonder if you can swap engine crankshafts? Well the answer is yes!
Watch as I show you how this is easily done!
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Easy to follow and thorough step by step video tutorials, do it yourself (DIY) to help you with your broken lawn and garden equipment including snowblowers.
I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed wacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
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Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. DONYBOY73 “The Small Engine Doctor” assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. DONYBOY73 “The Small Engine Doctor” recommends safe practices when working with power tools, hand tools, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not DONYBOY73 “The Small Engine Doctor".
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Пікірлер: 221

  • @xecukc7010
    @xecukc70102 жыл бұрын

    This video, and another I found specific for a 196 CC Honda clone, really helped me swap out a 5/8" shaft to a 3/4" for the addition of a torque converter on my minibike. Thanks!

  • @WillLinnebur
    @WillLinnebur5 ай бұрын

    The video makes it look so easy. And it was! I've grown to love small engines. Cheap education and entertainment.

  • @ThunderDivine
    @ThunderDivine7 жыл бұрын

    Air hammer tip is great, it has so many uses we tend to forget, great!

  • @cherylkygirl7181
    @cherylkygirl71813 жыл бұрын

    EXCELLENT VIDEO. One of the best detailed videos I've seen for removal and replacement of crank shaft. Thanks. I think I can do it now!

  • @davemarks7322
    @davemarks73224 жыл бұрын

    Well done and even though there is no crankshaft swap in my future, I watched the video anyway just because I like the way you do them.

  • @lmalino695
    @lmalino6957 жыл бұрын

    Three excellent skills; mechanical excellence, video presentation excellence, and teaching excellence. Thanks.

  • @Pwl47
    @Pwl477 жыл бұрын

    Using the air tool to loosen the flywheel was a valuable tip. I always learn something from these videos. Thanks for posting them.

  • @seapilot4042
    @seapilot40427 жыл бұрын

    Keep in mind, I missed this during rebuild of a 1980 3.5hp Briggs vertical shaft, the crankcase gasket, there are two for this engine, this one needed the .015. I could barely pull the engine through, broke in all back down miked everything put it back together and still was so stiff, I did get it to start. but pulling it through was just too hard to do and I knew there was something else that needed my attention. The dealer had sold me a .005. I didn't give it a second thought, until I remembered reading about the two different thicknesses. What a difference a few thousands of an inch make. Great channel.

  • @99carnot
    @99carnot7 жыл бұрын

    Very helpful step-by-step instructions. Original engine with old style starter clutch and all metal parts was nice to see.

  • @willatkinson953
    @willatkinson9535 жыл бұрын

    Excellent video! Left absolutely no questions! Perfect and thank you.

  • @oliveoilsjim
    @oliveoilsjim4 жыл бұрын

    Was in a hurry one day putting new rings in a Briggs and didn't emery the crankshaft before reinstalling the sump! I thought how bad can it leak? It didn't leak much, just enough to run down on the drive plate on a Snapper rider! Had to stop cutting and clean the plate every 20 min from then on! Live and learn!!

  • @chamilaherath7875
    @chamilaherath78755 жыл бұрын

    Thanks you so much for putting these videos up. I successfully rebuild a honda gx 160 thanks to some of your vids. By the way I am from AUS.

  • @GarwoodNick
    @GarwoodNick7 жыл бұрын

    Thank you for this great video. I especially appreciated the efficient presentation and concise editing. Well done!

  • @semco72057
    @semco720577 жыл бұрын

    I enjoyed watching you change out the crankshafts on the two engines and believe that I could do that. I need to figure out how to get my power generator going which have not been started in many years. It never was used since I had problems with it since buying it, and installing the oil in it. The newest one worked fine, but I never used it since our power never stayed off long, when we lost electricity.

  • @bluehorseshoe7171
    @bluehorseshoe71717 жыл бұрын

    Well timed video. I'm just about to swap out crankshafts from two similar Briggs and Stratton Motors. Thank you sir.

  • @arthurbania372
    @arthurbania3726 жыл бұрын

    Very nice and helpful video. I had to replace my crankshaft in the same motor as that one, but crankshaft was slightly different. Thanks Dony:)

  • @GrassDaddy
    @GrassDaddy7 жыл бұрын

    I love the videos very cool learning how these work!

  • @joekoke1
    @joekoke16 жыл бұрын

    Don..you are awesome. You are a life saver. Thanks for your videos..

  • @michelpaulcote353
    @michelpaulcote3537 жыл бұрын

    Enjoyed this great video and, as always, learned some excellent tips.Thanks

  • @ZippoVarga
    @ZippoVarga7 жыл бұрын

    It won't be long and you'll be in the 100K club Donny! Congratulations on your channels success! Also, great video as always! Cheers!! Zip~

  • @donyboy73

    @donyboy73

    7 жыл бұрын

    thanks

  • @zyplex1
    @zyplex17 жыл бұрын

    Excellent video as always, 👍

  • @jcs6347
    @jcs63477 жыл бұрын

    Very informative and well done, thanks!

  • @lukemartin7029
    @lukemartin70297 жыл бұрын

    great video Donny. thanks for posting!

  • @alejandromejia4996
    @alejandromejia49965 ай бұрын

    Awesome video i had a 1965 briggs with a plane crank shaft the was damaged like someone tryed to grind it an make it a 5/8ths shaft an hammered on a 5/8ths shaft an bent the crank i had already threw the block in the recycle bin when i found this video the cylinder walls looked new an the valves looked like they had never been ran more then a hour so i got some other engine with the intake ceased an took out a double sided bearing pto side crank that was on a newer engine style an put it on the old 1965 block i used the newer style head an all the hardwear because the old bolts where flatheads bolts an they never tighten good the rip cord side was a short shaft so i used a new cup an new started the engine loooks cool an i saved the original engine to my classic minibike👍 🎉

  • @philbrown2270
    @philbrown2270 Жыл бұрын

    Hi, thank you for a very informative video and very helpful for me as a layperson.

  • @gregjr1657
    @gregjr16575 жыл бұрын

    Another great video....As always, well done, Thank you

  • @queenstownkid
    @queenstownkid7 жыл бұрын

    Excellent video as always dony

  • @clauslundberg9224
    @clauslundberg92247 жыл бұрын

    Nice walk-through Don - video is HQ in content. Great weekend to all.

  • @MrGoosePit
    @MrGoosePit7 жыл бұрын

    Nice job Don. Enjoyed the video. Thanks!

  • @angelorg77
    @angelorg777 жыл бұрын

    thanks! donyboy, !! from now on, I will only use higher octane on my lawnmower :-) you're boss man !! :-)

  • @treebutcher2000
    @treebutcher20007 жыл бұрын

    Very helpful video thanks.

  • @nicolauscory2065
    @nicolauscory20656 жыл бұрын

    Awesome vid. Very helpful.

  • @rats-the-tech1688
    @rats-the-tech16887 жыл бұрын

    Well done Don. The video was very well made.

  • @mrjenybean
    @mrjenybean Жыл бұрын

    This taught me so much thank you!

  • @fleetwin1
    @fleetwin17 жыл бұрын

    Good ol Briggs, so simple and reliiable

  • @jorgeposadas1192
    @jorgeposadas11922 жыл бұрын

    I haven't seen you in awhile, nice to see your videos are still up, nice job.

  • @SteveRobReviews
    @SteveRobReviews7 жыл бұрын

    Nice one Dony. 👍👍

  • @BrucesShop
    @BrucesShop7 жыл бұрын

    Well done.

  • @jonmyers8046

    @jonmyers8046

    7 жыл бұрын

    Hi Bruce! :) lol!

  • @michaeljdestefano1208
    @michaeljdestefano12087 жыл бұрын

    Wow, excellent job my friend!! One of the most informative, concise videos I have ever seen. I wish you could help me with 1 year old Briggs and Stratton with a bent (I think) Crankshaft. I found out you can not cut a 3/4" reinforcing rod with a Lawnmower. LOL!! It was hidden below some weeds I was trimming. Should have used the weed wacker, now I know that. I did replace the Flywheel keyway and the Blade, now it starts. It runs fairly well at full speed but at idle it vibrates like crazy. Oh well, you live and learn.

  • @donyboy73

    @donyboy73

    7 жыл бұрын

    I usually do not end up repairing bent cranks

  • @joev3315
    @joev33157 жыл бұрын

    great video , like to see more of these repairs.

  • @jamesmullins3219
    @jamesmullins32197 жыл бұрын

    excellent video, great photography & edits. Sometimes it may be better to search for a used engine with the right crankshaft. Thanks

  • @eduardomoro6116
    @eduardomoro61163 жыл бұрын

    Excelent video very useful

  • @duchy1957
    @duchy19576 жыл бұрын

    Thank you nice job,

  • @benjaminrich9396
    @benjaminrich93967 жыл бұрын

    Nicely done

  • @CarlJohnson-ry3gc
    @CarlJohnson-ry3gc4 жыл бұрын

    Ok!!! Now that was amazing.

  • @360Prairie
    @360Prairie7 жыл бұрын

    Another great video. Holey moley, nearly 100,000 subs!!!

  • @acollins9277
    @acollins92774 жыл бұрын

    Nice job.

  • @TOWNCARBUBBA87
    @TOWNCARBUBBA87 Жыл бұрын

    Good job brother 👍

  • @grantw.whitwam9948
    @grantw.whitwam99487 жыл бұрын

    Great to know.

  • @declyn8
    @declyn87 жыл бұрын

    THANK YOU!!!

  • @rusty.spires7931
    @rusty.spires79317 жыл бұрын

    YeSir.u.The.Man... big thumbs up...

  • @kaiok1777
    @kaiok17777 жыл бұрын

    Great video!

  • @kieronr1
    @kieronr16 жыл бұрын

    excellent video.

  • @JoshKilen
    @JoshKilen7 жыл бұрын

    nice job, thanks for sharing

  • @Jflowboston1
    @Jflowboston17 жыл бұрын

    you did a good job,

  • @paulmeynell8866
    @paulmeynell88664 жыл бұрын

    Brilliant thank you

  • @rameshnatu7731
    @rameshnatu77317 жыл бұрын

    nice explained sir.

  • @SedatedByLife
    @SedatedByLife Жыл бұрын

    Welp. Now I know how to do my vertical shaft 8hp B&S. Thank God it's easier than I thought. The things I do to restore an old mower keeping as much original as possible...

  • @Carlostype
    @Carlostype7 жыл бұрын

    great stuff!

  • @grantwilliams5052
    @grantwilliams50527 жыл бұрын

    GREAT CLIP

  • @zr24X4ROCKS
    @zr24X4ROCKS6 жыл бұрын

    thank you.

  • @buddylittle7759
    @buddylittle77597 жыл бұрын

    very nice job.

  • @mordechailevinson8646
    @mordechailevinson8646 Жыл бұрын

    Thank you....Well Done Video....

  • @whitesheatingairappliancer7101
    @whitesheatingairappliancer71017 жыл бұрын

    nice video thank you.

  • @AlekseyCamodelkin
    @AlekseyCamodelkin6 жыл бұрын

    Some things I liked.

  • @benkiist8218
    @benkiist82184 жыл бұрын

    Great video! Love the way you walk through everything. What is your parts washer, and what do you reccomend for someone who would be looking?

  • @ngl-kd7tn
    @ngl-kd7tn7 жыл бұрын

    Cracking video.

  • @hp11208
    @hp112086 жыл бұрын

    Good video

  • @farmuntilthemoneyrun
    @farmuntilthemoneyrun5 жыл бұрын

    Hi Don, thanks for making this video! You are a great teacher. I have a question: what were the torque specs for the bolt on the flywheel? Thank you!!

  • @JosephStalin1941
    @JosephStalin1941 Жыл бұрын

    Excellent video! I am working on a motor with bearings on the crankshaft and I was wondering how to match up the timing marks

  • @geojor
    @geojor7 жыл бұрын

    thanks for this ...

  • @donyboy73

    @donyboy73

    7 жыл бұрын

    thanks for watching

  • @gtw9998
    @gtw99983 жыл бұрын

    And keep up with the good videos very good and helpful

  • @donyboy73

    @donyboy73

    3 жыл бұрын

    Glad you like them!

  • @villadavinapanamajack3916
    @villadavinapanamajack39164 жыл бұрын

    Well done son..your a great mechanic and your videos are succinct and easy to follow. Have a question..Honda GVC 160 sheared the key drive sprocket for the timing belt. Have you ever seen that before? Again...great videos..keep up the good work. Jack in the Republic of Panama

  • @nsopceo
    @nsopceo3 жыл бұрын

    Do you remeber what the torque setting is for the flywheel nut? Thanks! Great video, very helpful!

  • @banderasska
    @banderasska7 жыл бұрын

    EXELENTE !

  • @arciefan
    @arciefan7 жыл бұрын

    Hey Don, Great video. Exceptional step by step instruction and great camera work. Just wondering why since I don't see a single video on YT on reworking a head on a riding mower with briggs engine. I see them on the small engines where the valves are lapped but nothing on the riding mowers with the overhead valves. Just wondering if new springs, guides and valves and guides can be put in or would it require machinist work and make it more cost effective to order a new head. I'm sure that would be a huge cost though. Anyways would appreciate if you would comment or make a video on that. Thanks for your great channel !

  • @swiftclaw9402
    @swiftclaw94027 жыл бұрын

    On the engine you were running at the end (the five hp b and s) I am currently working on one and wondering if you could make a video on how the governor linkages are set up on this particular engine because I have done research and cannot find a diagram for the engine

  • @scottfirman
    @scottfirman4 жыл бұрын

    Guess I will pull the bent crankshaft on my Honda mower. I was going to try and get it straightened but for the price, Its just as easy for me to Replace instead of messing with a bent shaft.

  • @donyboy73

    @donyboy73

    4 жыл бұрын

    yes sometimes, just find a good used one

  • @vernonball4581
    @vernonball45816 жыл бұрын

    I need to do this to my pressure washer, will it be about the same way as you did here?

  • @flunkywill2000
    @flunkywill20007 жыл бұрын

    do you think you should torque twice? in my experience the bolt always moves a little tighter the second time.

  • @73superglide62
    @73superglide627 жыл бұрын

    Sweet you did video on the rewind on new one?

  • @carlosmeza570
    @carlosmeza5707 жыл бұрын

    Is there an adaptation to convert straight to taper shaft?

  • @demetriussantosky4838
    @demetriussantosky48387 жыл бұрын

    Can these bolts on the sump cover be different on a different motor because mine are 7/16

  • @chasbass5321
    @chasbass53217 жыл бұрын

    Hi Donyboy, Always enjoy your superb videos. Just an FYI, I took a keyed crankshaft from an 8hp Tecumseh snowblower (that had a broken rod and cracks in the block) and put it into a 10hp Tecumseh wood chipper engine that had a tapered crankshaft. I checked all the specs with my micrometer and everything was exactly the same. The only difference, other than the crankshaft end, between the two engines was the piston bore. I used my "new" snowblower with it's 10hp engine for 3 hours after a big snowstorm and it worked just fine.

  • @carlschroeder6811
    @carlschroeder68113 жыл бұрын

    @donyboy73 , Is swapping a sump cover from another engine ever a problem due to the block being line bored for the crankshaft during manufacturing, thus pairing the engine block with it's own specific sump cover? Also, any need to check crank endplay after that swap?

  • @63256325N
    @63256325N7 жыл бұрын

    Nice job. All you need now is a mini bike frame and some wheels.

  • @lestergillis8171
    @lestergillis81712 жыл бұрын

    I have never tried that "Ultra-Black" stuff. I've always preferred "TABER'S" (IF one can find any), Or Permatex "Form-a-gasket".

  • @Thebrickrobloxcat
    @Thebrickrobloxcat7 жыл бұрын

    hi donyboy, i have a question for you about a small engine briggs and stratton sn 128m02/0134f1 the engine was blown, prob was the connecting rod. i did replaced it with the right match, however when i tighten the bolt ,100inch lbs and tried to spin the crank shaft it won't turn at all.

  • @davidclink2032
    @davidclink20325 жыл бұрын

    Best video of small engines to date. I have a 5hp B&S horizontal engine on a go cart. I replaced the carb. It's back together but I can't get the throttle right. I can't find a schematic of this type. No manual throttle capability only the choke. I need a choke rod so could use some advice how toi find one vs making one. The governor is functioning. This go cart engine didn't have the race track in the linkage which interacts with the manual throttle control. I know linkages vary and the model # for this one is no where to be found. I just need an image or schematic reference of how this should connect. The new carb came with the throttle on the carb hooked up. Also, the needle valve for mixture control did not have a spring on it so I'm guessing I use the old one even though the new needle valve looks different than the old one and the ones in the kit. Hope you can help advise about a schematic or and image or two of how this throttle linkage should hook up.

  • @outdoorswithdooley1169
    @outdoorswithdooley11699 ай бұрын

    Blew up a 1100$ Briggs world formula, I guess I’m gonna rebuild it. Just need to get parts. I need a new crankshaft and a connecting rod. And a clutch.

  • @frankg3278
    @frankg32783 жыл бұрын

    I have the same situation with a Honda Gx390. It has a long taper and I want to replace it with a keyway shaft. Do you think it will fit ?

  • @Rafcat555
    @Rafcat5552 жыл бұрын

    Hello. Craftsman engine model 20M314 what torque on the crankshaft cover swamps?

  • @Oldcoinsandstuff1
    @Oldcoinsandstuff14 жыл бұрын

    How universal are engine parts from year to year? Where do you get your parts for older / newer engines?

  • @tonym6920
    @tonym69207 жыл бұрын

    What size impact driver do you recommend for small engine work. There are so many of them out there it's really confusing. I know you require special sockets with an impact wrench. I would prefer something battery driven or electric rather than an air tool. My use is for my own equipment, no commercial work. So basically it would be used on lawnmowers, my riding mower and generator. Thanks Dony, appreciate your help!

  • @donyboy73

    @donyboy73

    7 жыл бұрын

    watch this video kzread.info/dash/bejne/q6Rns7ejXbetYKQ.html

  • @pbrstreetgng79
    @pbrstreetgng797 жыл бұрын

    Dony i have a question for you. Do Canadians, or for that matter people in your community have a tendency to purchase quality outdoor power equipment? Here in the States most people buy "one season wonder" throw away equipment. I'm curious as to your opinion as a Canadian. Maybe you can squeeze this onto a q&a video...? Thanks. Longtime subscriber here.

  • @lestergillis8171
    @lestergillis81712 жыл бұрын

    Mineral spirits kicks ass...

  • @adrianhorn6655
    @adrianhorn66556 жыл бұрын

    Dont forget to tab over the bolts on the bottom of the crank shaft otherwise very informative thank you for a great video

  • @jefftorres1569
    @jefftorres15697 жыл бұрын

    Ok. I have a Honda GX270 9hp small engine that has a short crankshaft. What can I do to extend the shaft please?

  • @gahlyogu4570
    @gahlyogu45705 жыл бұрын

    I know your application didn't need the bearing but if you did need it, how do you remove the crankshaft bearing ?

  • @dubber2001
    @dubber20015 жыл бұрын

    Hey man, I need a crank for a 7hp Briggs. I can't seem to find much on 7hp. 6hp and 8hp. But not much about the 7hp. Can I use a crank from anything else? Thanks

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