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seizing tecumseh hs50?????? #4578078
11/18/17 03:15 PM
11/18/17 03:15 PM
Joined: Dec 2006
Posts: 969
Sweden
lars11 Offline OP
lars11  Offline OP
Joined: Dec 2006
Posts: 969
Sweden
thought I had it all figured out about ope. until today. My snowblower tecumseh seizes after a minute or two regardless of power. It seizes and can be turned free with a wrech, then starts just fine again...

So, did the oil vaporize during summer? No, full.
Bad oil? Changed it to new synth 0w30.
Dirt in the cooling fins? Took starter cover off and checked, nothing.

What the h--l is happening? Anyone? Ideas?
Can the lubrication break in some way I don't understand?

Re: seizing tecumseh hs50?????? [Re: lars11] #4578116
11/18/17 04:18 PM
11/18/17 04:18 PM
Joined: Jan 2011
Posts: 1,035
Columbus Nebraska
old1 Offline
old1  Offline
Joined: Jan 2011
Posts: 1,035
Columbus Nebraska
Possibly the oil dipper on the connecting rod broke off. I have seen it happen if it is a stamped steel one. If is an aluminum bore engine it could be that the chrome plating on the piston wore off and the piston is sticking to the cylinder, but that usually happens when you shut off the engine. No way to check either without taking the engine apart.


2017 Nissan Frontier 4.0 5w30
1965 Mustang 200 c/4 10w30 QS defy
1964 Ford Ranchero 302 c/4 15/40 Delo
1929 ford model A No filters, and 15/40 oil
Re: seizing tecumseh hs50?????? [Re: lars11] #4578118
11/18/17 04:21 PM
11/18/17 04:21 PM
Joined: Aug 2005
Posts: 906
dayton oh
kc8adu Offline
kc8adu  Offline
Joined: Aug 2005
Posts: 906
dayton oh
that thing have an auger brake?
dragging a a bit heats up and drags it down?

Re: seizing tecumseh hs50?????? [Re: lars11] #4578161
11/18/17 05:48 PM
11/18/17 05:48 PM
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 5,858
Kalifornia Kollective
Or, it could be the wrong mixture - lean ...


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: seizing tecumseh hs50?????? [Re: lars11] #4578193
11/18/17 06:39 PM
11/18/17 06:39 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Seizes or shuts off ? Usually when an engine seizes, it don't turn freely afterwards.

Re: seizing tecumseh hs50?????? [Re: old1] #4578354
11/18/17 09:38 PM
11/18/17 09:38 PM
Joined: Dec 2004
Posts: 1,530
Pennsylvania
Slick17601 Offline
Slick17601  Offline
Joined: Dec 2004
Posts: 1,530
Pennsylvania
Originally Posted By: old1
Possibly the oil dipper on the connecting rod broke off. I have seen it happen if it is a stamped steel one. If is an aluminum bore engine it could be that the chrome plating on the piston wore off and the piston is sticking to the cylinder, but that usually happens when you shut off the engine. No way to check either without taking the engine apart.


This

Re: seizing tecumseh hs50?????? [Re: lars11] #4578787
11/19/17 10:49 AM
11/19/17 10:49 AM
Joined: Dec 2006
Posts: 969
Sweden
lars11 Offline OP
lars11  Offline OP
Joined: Dec 2006
Posts: 969
Sweden
Thx, that was it! Broken off slinger, see pic. Now lets see if I completely ruined it.... frown

Last edited by lars11; 11/19/17 10:59 AM.
Re: seizing tecumseh hs50?????? [Re: lars11] #4578805
11/19/17 11:09 AM
11/19/17 11:09 AM
Joined: Feb 2016
Posts: 9
Watertown NY
Oilis_Oil Offline
Oilis_Oil  Offline
Joined: Feb 2016
Posts: 9
Watertown NY
dump the synthetic oil, replace the dipper and see if it runs good enough to use. dont over engineer it or worry about every little imperfection you see. its a snowblower. ive seen small engines that were hurt bad and cylinders scratched, metal in oil run for years after they were deemed no good by someone else. run some 5w30 conventional- the oil it was recommended to run in it the day it was new by the engineers that built it. ii would ck the plastic governor gear as they are prone for failure in those engines.


2002 Silverado 2500 130K 6.0
2006 Silverado 2500hd 6.0 250K
1984 Camaro Z28
2003 ToyotaCamry 212K
2001 Dodge Dakota 140K
All Dino All The Way!

Re: seizing tecumseh hs50?????? [Re: lars11] #4578932
11/19/17 01:35 PM
11/19/17 01:35 PM
Joined: Dec 2006
Posts: 969
Sweden
lars11 Offline OP
lars11  Offline OP
Joined: Dec 2006
Posts: 969
Sweden
Ok, I found the other half of the dipper too. Two questions:
1- You think I could weld them together maybe usin a washer underneath? (Hard to find part with short notice...)
2- What bolt on the rod is it supposed to be attached to? And what orientation? Anyone got a pic?

Re: seizing tecumseh hs50?????? [Re: lars11] #4578994
11/19/17 02:52 PM
11/19/17 02:52 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: lars11
Thx, that was it! Broken off slinger, see pic.


Apparently, "seizing" was the correct word after all. shocked2

Re: seizing tecumseh hs50?????? [Re: lars11] #4579605
11/19/17 11:43 PM
11/19/17 11:43 PM
Joined: Jan 2011
Posts: 1,035
Columbus Nebraska
old1 Offline
old1  Offline
Joined: Jan 2011
Posts: 1,035
Columbus Nebraska
You could probably weld it with a washer, if you are an excellent welder, but they aren't very expensive, and shouldn't take too long to get. And it goes on the lower bolt.


2017 Nissan Frontier 4.0 5w30
1965 Mustang 200 c/4 10w30 QS defy
1964 Ford Ranchero 302 c/4 15/40 Delo
1929 ford model A No filters, and 15/40 oil
Re: seizing tecumseh hs50?????? [Re: lars11] #4579980
11/20/17 12:08 PM
11/20/17 12:08 PM
Joined: Apr 2010
Posts: 4,399
Storrs, Connecticut
jeepman3071 Offline
jeepman3071  Offline
Joined: Apr 2010
Posts: 4,399
Storrs, Connecticut
I'd get a replacement oil dipper. You don't want it to come apart again at the wrong time.


2000 Jeep Cherokee 4.0L (181k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (33k) - Castrol Edge Euro 0w40, MANN HU816X
Re: seizing tecumseh hs50?????? [Re: jeepman3071] #4580689
11/21/17 06:40 AM
11/21/17 06:40 AM
Joined: Jun 2011
Posts: 1,039
Texas
wag123 Offline
wag123  Offline
Joined: Jun 2011
Posts: 1,039
Texas
Originally Posted By: jeepman3071
I'd get a replacement oil dipper. You don't want it to come apart again at the wrong time.

+1

Re: seizing tecumseh hs50?????? [Re: lars11] #4581349
11/21/17 08:35 PM
11/21/17 08:35 PM
Joined: Mar 2009
Posts: 2,625
Cedarbrae, Ontario
xxch4osxx Offline
xxch4osxx  Offline
Joined: Mar 2009
Posts: 2,625
Cedarbrae, Ontario
I'm surprised it didn't throw the rod since it wasn't getting oiled properly.

Last edited by xxch4osxx; 11/21/17 08:35 PM.

2015 RAM SXT Crew Cab 5.7 with 6 speed tranny.

2008 Mazda 3 GS Sport Hatchback 5sp MT (Girlfriend's car)

Re: seizing tecumseh hs50?????? [Re: lars11] #4581668
11/22/17 08:35 AM
11/22/17 08:35 AM
Joined: Feb 2003
Posts: 7,427
Jupiter, Florida
Cujet Offline
Cujet  Offline
Joined: Feb 2003
Posts: 7,427
Jupiter, Florida
You might want to pull the con-rod cap off and polish the crank journal to ensure it's OK.

I have no problem fabricating my own parts. Sometimes they can be engineered NOT to fail like the OEM part.

And remember that thick oil will place additional load on that part. I suggest a quality synthetic.


People who count on their fingers should maintain a discreet silence.
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