How To Fix A Hydro-Locked Lawnmower

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ben case: Damn that's like a funny car smoke

Damian: I had the same problem, it was hard to pull and I left it standing upright in the garage. Quick Google search and I found this video, 10 minutes later I was mowing the lawn!

Trucker boy 98: Hey I have the exact same engine I'm confused if it's a 5.00 horsepower or it tourqe rating IDK what the horsepower is.

1234tric: Thanks.

Larry Lafferty: Wow! that was allot of smoke.

Mike Scott: DUDE!!!...You are the man!!!...tipped mower up to take blade off to get sharpened...forgot to put mower back down...2 days later put blade back on...and ran into the hydrolocke...but never heard of it...was resigned to scrapping the mower...but found your video...10 mins later...BINGO!!...thanks alot...saved me a few hundred bucks


M Gomez: It was clean because I cleaned the head a couple months ago. I replaced the connecting rod.

M Gomez: But once engine gets running it does not affect performance? Only during start up? Sorry for all the questions. Been messing with this engine for 2 weeks.

M Gomez: Dony, mine is not hydro locked but cord is hard to pull. Mower starts. Adjusted valves and fw key is good. If I remove spark plug it pulls smooth as butter. The crank shaft is not bent either. Any suggestions Dony?

Raul De Anda: my lawnmower has the same problem, but no oil comes out when I try starting it.

Casual Gamer: hey dony is there a way for me to take off the muffler on mine and let all the oil come out so it doesnt cover my new shiny muffler in scolding hot oil?

simeon kotev: with what spray spraying the cylinder and carburetor

Mike Gearhart: This worked exactly as in the video. Removed spark plug, pulled the starter about 20 times, wiped off the spark plug and replaced and mower started on the 1st pull. Saved me the $250 I was about to spend on a new mower. Thanks!

hoi Nguyen: Thank you for sharing this tip.

Mark Casey: first of all, this is amazing, thank you. Exactly what was wrong w/ my mower.

I do have one question. This is the first time it fully hydro-locked. but the mower has a history of blowing smoke out every now and then when i start it up, but by the time i was done mowing it would be blowing clear. I would think this meant that it cleared the pooled oil.

Is there any reason that oil would keep filling the chamber? I bought it from a buddy, so maybe he overfilled it, and it's just continually happening because it need drained a bit. but is there anything/where that could be leaking oil internally i could check, to see if i can get it to stop?

Love2boat92: Neighbors be like "what's all that smoke hun? Oh its just donyboy73 rolling coal with a push mower. It's nothing" Hahahaha. Thanks for this tip. I just got a push mower just like this one that I think was stored like this one was. Oil coming out of the muffler and its on the deck too.

Frederick Yankowski: This worked on a new snowblower. I brought it home tipped on its side to fit my car. I think the oil migrated to where it caused the hydro-lock. Would not crank over at all. Pulled the plug and then it could crank. No oil or gas came out. Put it back. Ran very dirty for 10 minutes, then fine. Thanks.

taratupa73: Thanks for posting this! I had exactly the same symptoms on the engine on my leaf vacuum, and this method helped me to get it started. Good advice! Thank you again.

Trucker boy 98: I have a push mower with no blade it always does a kick back or it will pull half way need help?
How To Fix a Hydro-Locked Lawnmower 5 out of 5

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