How To Fix A Hydro-Locked Lawnmower




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Did this video help you?

Christian Hack: Love your channel, really really helpful, I'm trying to learn about lawn mower repairs and found your channel a while ago after watching mowerman. Please can you help? Could this problem still exist after I've cleaned all the piston heads? Thanks for your help and I really appreciate your videos, please keep them coming.

Gilbert Cruz: Is it possible to "hydrolock" the engine between piston and crankcase (i.e. too much oil added to engine) and would oil viscosity be a culprit? I recently worked on a Craftsman Tiller 208 cc, front tines, that had gas in the oil and was coming out the muffler and was also hydrolocking at times when pulling rope. I checked the carb for sticking needle/float, checked ok, then I drained and changed the oil (I used 5W-30 instead of 10W-30). When I tested engine it worked fine but when I tested engine the next day the rope was hard to pull at times but would eventually turn motor over and start. So, why would the engine be hard to turn? Maybe a too much oil. (By the way, specs call for 20 oz. of oil. I added an extra ounce or two.) What can you tell me?

steelyeyedmissileman: Bet you were popular with the neighbours!!

alex pencek: Thanks for helping me with my hydro locked mower

Cody Jv: Flooding carb can do the same thing, but isn't always as obvious. 

William Ross: Good work, good video.

Bumpkin PiEm: Thank you for the great video, donyboy. I have a question: Mamma has a husqvarna self - propelled push mower, and I tried to start it yesterday. The pull rope at first pulled fine- it didn't start, as I pulled a few more times, the rope got harder and harder to pull, till I seriously could barely pull it - over about 4 more pulls. Mamma said the other day when my sis was using it to mow her lawn. it got hot then she could not start it again. Then, later, Mamma got it started but it wouldn't remain running. It has fresh non-ethanol ethyl in it- its all we ever run in our lawn and garden tools. Oil is dark but adequate amount. Is this video above (hydrolocked mower), the right one for me? I watched it and I will try it, but I didnt notice any oil- (knowing Mamma she would wipe it up, however) IF you can think of anything else, please let me know. I will be working on Mammas mower tomorrow. Thank you for your kind help!

TReaD113: At least the cylinder is well lubricated

春日歩: You shouldn't put starter fluid in an engine that's low on oil and has excessive blowby. that's just asking for trouble.

Antonio Tinson: Thanks for the video...I have the same problem with one of my mowers..but its a Kawasaki motor ..wanted to know where yet were located so you could take a look

Trenton Sanders: thanks this can be a help to people one time my friend had a hydro locked lawn mower and he got rid of it thinking the engine was blown

donutcasual: pollution. yum yum. Anyways thanks

lovangels55: Thanks for that info, it saved me from taking my mower to a shop.

Bradley Reaume: Okay, I don't know who you are, but I just used your video to fix my "hydro-locked" power washer in about 23 minutes, so as far as I'm concerned, you Sir are a f&(%!ng genius! THANK YOU!!!

Joey Mayfield: wow that really works got my mover fixed by doing that THANKS

gsx8ualive801: Thanks for this video. I couldn't get my mower started today and knew for sure this was why when I watched this. Its running great now.

Jim Pierce: cool

Destin Games: Thanks

Stephen Tomaszewicz: Emptied all the oil out of my mower. pulled the flywheel, opened the chamber below the flywheel for the excess oil. and cleaned and dried it all. also took the head off and cleaned it. put it all together. started it up. and as it ran, it was smooth at start.. then slowely began to slow down then speed up and when I shut it down. it started smoking. it also seem a little harder to pull like a hydro lock. I thought it might lead to a hydro lock so stopped it. any ideas? it is a craftsman 6.5 hp eager it was clanking before, but now I think it is fine. I think the blade was loose and or the flywheel before. it sounded great until it started oscilating and smoking. Ideas?

kenny sylvia: Hi how are you I have a 5.5 walk behind briggs stratton. Pull coil issues my uncle gave to me started it at his house came back to my house couple pulls and it locked up I broke everything down and pull coil off the machine works fine I put i all back got about a dozen pull on it and it locks up on me once mower hope to here from u soon have a great week end

Reaz Mohammed: Good info, thanks for the tips there always appreciated.

tony macdonald: I've come a cross this now I know watt wrong and watt to do thanks your just the top at watt you do Donny. 

Tyler Gideon: Thanks for the upload same problem with my pressure washer. Save me my sanity

Mrjakepowers29: Thanks a lot. I knew it was not the spring. So kept Searching you tube and found your video. I have same lawnmower and has oil coming out of muffler. Saved me a lot of time and aggravation.

Shanker Kana: you are awesome! I just had the same problem!

57Spanky: I have a motor that I rebuilt the carb on and it started up fine but had a bad skip in it. I noticed before I started it that the oil was just below the add mark so I added some oil and brought it up to full level. I tried to start it again and nothing. I looked at the carburetor and saw gas coming out, like the float was stuck. I pinched off the gas line with some locking pliers and kept trying to start it. On about the 8th pull the motor began to tighten up and then one pull later it locked up. I pulled the spark plug and tried it but it wont budge. Any ideas?

lawnside82: ..and who or why would someone store a lawnmower up like that??

Ken Burke: Just fixed my lawnmower thx to your video! Thank you!

anniversary4: Once again Don I love your entire video series! Thanks for a great service that you provide. Can this hydro-lock problem be caused by overfilling the oil?

Scooter George: Shouldn't you check the oil level in the crankcase before attempting to start the engine? That's where the oil in the cylinder/combustion chamber came from. Otherwise, your advise seems sound. Maybe a bit heavy on the starting fluid though...

Chris Deziel: Great video. Very clear and helpful!

lugo small engines: for some reason fixing a hydrolocked motor is fun I guess cause its easy

jason fisher: I hope the epa doesn't c this video lol.

krishan Bali: help

krishan Bali: my dirt bike dose not start because the pull cored is stuck

batchnerd: I actually got a mower from someone. They said that they could not start it, but we have a better one so you can have it. It needed gas... I tipped it up like that it was hard to pull, but still started, smoked like crazy though. I guess you can count on your briggs and stratton.

donyboy73: is it OHV

donyboy73: @Nickster7ROR yes use a horizontal crankshaft for a go-kart

twostinkyfingers: Update: Engines turns without spark plug but with it in, the engine doesn't turn.

paraglidermx: Could fill with gas and hydro lock also,,bad needle valve in carb..have to remove bowl to get to it.

Ross Cowan: Well I'm confused. I tried your "fix" on my mower, didn't work. You stated my crankcase may still be overfilled even though the dipstick showed oil level to be between add and full. So I decided to drain all the oil, guess what too much oil. I refilled oil to proper spec and the mower now operates as it should. Thanks for the tip, I owe you as I was ready to throw this mower OUT! Thanks again.

donyboy73: @D12caterpillar it might help the oil get out faster

jason bell: do u have a video or can u make a video on how too remove a gas tank on an 89 briggs and clean out the gas tank properly

twostinkyfingers: Trying this out in a few minutes need to get some quick start, but my question is do you shut the gas off when starting it with no spark plug? Also watched your carburetor change guide. Thanks.

Brandon Yost: I have an edger same problem its hard to pull took the spark plug out and it spun a tad easer but still alot of force is needed its brand new... Any ideas?

steven earnshaw: bend something when it can't comprees, i think a pool would cut off the air first

guitarfire1633: what were you rideing in the creek with your mower

Brent Jones: this can happen if your flowt gets stuck as well

donyboy73: @dave7329 very hard to find a new 2 stroke mowers nowadays

fullraph: @donyboy73 There's one thing I noticed when I tried to restart it, it was doing backfire...
Rating:
How To Fix a Hydro-Locked Lawnmower 4.9 out of 5

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