Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Library] - [Photo Gallery] - [Groups] - [Classified Ads] - [Subscribe] - [Links] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Antique Engine Community > Small Air Cooled Gasoline Engines
Forgot Password? Join Us!

Notices

Small Air Cooled Gasoline Engines Briggs & Stratton, Clinton, Lauson, Maytag, Nelson, Wisconsin and other small air cooled engines.

Small Air Cooled Gasoline Engines

Briggs 446777 Engine, Low Oil Shut Off


this thread has 33 replies and has been viewed 2122 times

Reply
 
Thread Tools Display Modes
  #21  
Old 10-01-2017, 06:56:18 PM
sprkplug sprkplug is offline
Banned
 
Join Date: Sep 2008
Location: Freedom, Indiana
Posts: 2,470
Thanks: 356
Thanked 934 Times in 657 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

Quote:
Originally Posted by Tracy T View Post
Mr plug I am too tired at this point to debate this any longer today, but I ask you this. If it was a oil pressure or lack of oil, why did the other rod not suffer from the same?
Why does a V8 not spin all of its rod bearings simultaneously? Because there are always differences in oiling between rods, different levels of fit, different levels of wear. Maybe the oil flow was restricted to only one rod. Maybe foreign material partially restricted oil flow, then once aluminum started smearing around the journal it got worse.

Now your turn. If it was a fatigue break, why did aluminum transfer to the crank? If your theory is correct, the bearing surface of the rod should not be shedding aluminum.

I'm not the only one saying this. You've heard from two professionals in small engine repair, and both say the same thing. The photos leave no doubt to someone trained in failure analysis.
Reply With Quote
Sponsored Links
  #22  
Old 10-01-2017, 10:25:46 PM
uglyblue66 uglyblue66 is offline
Subscriber
 
Join Date: Dec 2007
Location: Concord, North carolina
Posts: 4,588
Thanks: 1,751
Thanked 3,496 Times in 1,633 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

Now that I have some time to think, The rod started seizing to the crank,and the rod failed and broke due to the extra stress placed on it. The other rod was not quite as bad nor was as much metal to be removed from the crankshaft.
It is getting 2 rods,2 pistons.Allthough 1 piston is ok,I think it would be best to replace both since I want new rings as well. If it went low in oil, the oil had to go somewhere. It would seem I should have been mowing in a blue haze if it was burning oil really bad?
I posted the info from the Everide Hornet manual in regards to the oil..Synthetic, well, that explains alot, well it will get 30 w castrol from now on.. I do know for a fact i change it alot more often than they recommend.I have always thought oil was cheaper than engines.
Attached Thumbnails
Click image for larger version

Name:	DSC00047.JPG
Views:	30
Size:	58.0 KB
ID:	292704   Click image for larger version

Name:	DSC00049.JPG
Views:	30
Size:	31.3 KB
ID:	292705  
Reply With Quote
  #23  
Old 10-02-2017, 06:45:57 AM
sprkplug sprkplug is offline
Banned
 
Join Date: Sep 2008
Location: Freedom, Indiana
Posts: 2,470
Thanks: 356
Thanked 934 Times in 657 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

Thanks Blue, now we know the damage wasn't confined to just one rod. Looks like low oil, and improper weight oil, are to blame. This info verifies the conclusions reached from studying your photos of the damage.

30w will do you fine above 40 degrees, as your book shows.
Reply With Quote
  #24  
Old 10-02-2017, 04:58:43 PM
uglyblue66 uglyblue66 is offline
Subscriber
 
Join Date: Dec 2007
Location: Concord, North carolina
Posts: 4,588
Thanks: 1,751
Thanked 3,496 Times in 1,633 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

thank,I am getting agitated, the listing for pistons says a pair.But when I clic buy it now, it no longer says a pair in the listing title. Does not seem to be any after market parts for this engine except the gaskets.
Reply With Quote
  #25  
Old 10-02-2017, 05:05:01 PM
sprkplug sprkplug is offline
Banned
 
Join Date: Sep 2008
Location: Freedom, Indiana
Posts: 2,470
Thanks: 356
Thanked 934 Times in 657 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

I'm not surprised. I think you will be limited to buying genuine Briggs in this case.
Reply With Quote
  #26  
Old 10-03-2017, 10:22:51 AM
TomA TomA is offline
Registered
 
Join Date: Jun 2011
Location: Mariposa, California
Posts: 38
Thanks: 10
Thanked 24 Times in 14 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

Quote:
Originally Posted by gdstew View Post
Above 40 degrees use nothing but #30 high detergent oil. Winter ( snow blower, log splitter, etc ) use 10W-30. B & S just in the last several years approved 10W-30 synthetic for year round. We saw lots of the older twins, either blown up or the valve seat popped out, every one was using multi viscosity oil.
Multi grade oils use polymers as thickening agents. I want to lubricate my engines with oil...not polymers.

I run 30W oil in everything.
Reply With Quote
  #27  
Old 10-03-2017, 10:07:24 PM
Lawnboy Lawnboy is offline
Registered-I
 
Join Date: Jul 2009
Location: Red Bud, Il usa
Posts: 291
Thanks: 0
Thanked 143 Times in 105 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

I will add my two cents worth. Discolor of broken rod shows lack of oil. Just because it broke as you were using it doesn't mean it just happened. It could have been something that started many uses ago. Could have ben run to long on a slope, could have been from low oil or heat build up.. Briggs will tell you if you use 10W30 oil the engine will use more oil. I remember going to a Kohler service school years ago and the topic of diesel rated oil came up. It seems some company that had a lot of diesel equipment was using diesel rated oil in some new Kohler engines and it was so slick that the rings were not seating. For my money the best oil is what the engine manufacturers recommends. I would go a step further and say to use Briggs oil in Briggs, Kohler oil in Kohler and so on. Even if you can buy oil cheaper or an oil that is highly rated in automobiles, you will know you have what is recommended. Why does one rod let go and the other seems to be ok. These small engines do not have a high output oil pump, It may have been run low on oil and the pump could only supply enough oil to lubricate the first rod. Also look at the top bearing of the crankshaft as this will usually show on low oil problems. The life of these small engines is keeping the oil clean, changing as needed, keeping the air flow clean, mice nests,leaves and trash in fin area. An engine that looses a rod at 3200 RPM is going to break the rod in many pieces, but the color should show where the problem was. Be sure to check the other rod for any problems as well as checking heads for valve guides that may have moved. In other words, don't jus throw and new rod in it and hope for the best.
Reply With Quote
  #28  
Old 10-04-2017, 10:32:31 AM
uglyblue66 uglyblue66 is offline
Subscriber
 
Join Date: Dec 2007
Location: Concord, North carolina
Posts: 4,588
Thanks: 1,751
Thanked 3,496 Times in 1,633 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

It is getting 2 rods. I checked the top and bottom of the crank and block-crankcase,no marks at all.It will be getting 30w from now on.
Reply With Quote
  #29  
Old 10-15-2017, 11:02:14 PM
uglyblue66 uglyblue66 is offline
Subscriber
 
Join Date: Dec 2007
Location: Concord, North carolina
Posts: 4,588
Thanks: 1,751
Thanked 3,496 Times in 1,633 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

Well it runs! I mowed about 100 feet of grass with it at 9:15 pm tonight!
I aint run it but about 5 minutes 4 different times,breaking it in slow.
Seems to have more wheaties than it did for sure.
It got 2 new pistons,rods,gaskets and oil seals. A little over 250 bucks worth of parts. I coulda got in a hurry and finished it the other day but I took my time and worked on it a little once in a while to try not to make mistakes.
Now,it has 30 wt oil it and a Wix oil filter. I plan to change it after about 2 hours run time as if I was changing break in oil on a new engine..
I mow a yard for a lady that has a embankment along her drive way.It takes 4 passes to cut the grass.It would be difficult to mow it in the other direction as in up and down that short stretch as there is a ditch on 1 side I would fall in probably.
I have read here about being on a slope could have caused this? Is that if the machine was low in oil or is that possible problem at all. the machine does not slip on the slope.I don't know a "angle" to compare it to,I would say a 25 degree angle?
Reply With Quote
  #30  
Old 10-16-2017, 11:13:43 PM
Lawnboy Lawnboy is offline
Registered-I
 
Join Date: Jul 2009
Location: Red Bud, Il usa
Posts: 291
Thanks: 0
Thanked 143 Times in 105 Posts
Default Re: Briggs 446777 Engine, Low Oil Shut Off

Glad you took your time and got it running. Be sure to keep the oil on the full mark or a little above. But not much over as if you get to much oil the internal parts will whip the oil and it will turn to foam and not lubricate correctly. I think the engine will run at a steeper sloop on one side due to baffling and where the oil pick up for the pump is but don't know which side it is off hand. How long is the slope you are cutting? If it is less then 100 feet, I don't think you will have anything to worry about as long as you keep the oil to the full mark when engine is level.
Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Onan 4.0BGE 4000 Gen Sat.Stops running after motorhome engine is shut off. suebratton Onan Generators 28 02-10-2015 02:28:40 PM
Engine wont shut off DaveHC Garden Tractors / Mowers / Scooters 2 02-19-2012 04:36:17 PM
Kohler 7.5c62 generator ENGINE making noise during shut down mobus1 Kohler Generators 7 06-29-2010 08:00:12 PM
What is the proper way to shut off a hit-and-miss engine? andy b. Antique Gas Engine Discussion 14 05-07-2009 10:07:45 PM


Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 06:09:31 AM.

Smokstak and Enginads site search!


All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2016 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277