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Lawn Vacuum Engine Replacement... #4578944
11/19/17 01:47 PM
11/19/17 01:47 PM
Joined: Jun 2013
Posts: 701
Northeast
Finz Offline OP
Finz  Offline OP
Joined: Jun 2013
Posts: 701
Northeast
Have a Yard Machine that I posted about previously and fixed thanks to lots of feedback

Briggs Engine Code: 12h802-1777-d1 02092557

Yesterday, while running, I heard a noise and shut it down

I donít know what the part is called but:

*. The carb screws onto a plate - 2 screws

*. The plate is bolted into the engine - 2 screws

One of the bolts which fastens the plate to the engine sheared off.

I tried extracting the remainder of bolt but failed... drilled more meat out and I tried to tap a new 1/4-20 but did a [censored] job of it and am now waiting for the lock tight to cure

Questions:

1. The engine piece onto which this plate attaches is called...what? Ideally, this piece gets replaced if possible. It has the cooling fins on it
2. Alternative Iíve been considering is simply replacing the engine with something from Harbor Freight... I wouldnít even know where to start: Iím guessing this vacuum, like a lawn mower, is a vertical shaft? And thereís all sorts of measurements on harbor freight web site... what would these refer to?

Sorry for such cryptic info... spent hours and accomplished absolutely nothing so a little burnt out and crabby

Thank you


God Bless America
Re: Lawn Vacuum Engine Replacement... [Re: Finz] #4578954
11/19/17 02:04 PM
11/19/17 02:04 PM
Joined: Jan 2011
Posts: 1,035
Columbus Nebraska
old1 Offline
old1  Offline
Joined: Jan 2011
Posts: 1,035
Columbus Nebraska
That is a common failure on the B&S engines. Since you messed up the threaded hole, which is also very easy to do in the aluminum block, you can tap it out to a 5/16th thread and enlarge the hole in the plate. But, the part is the engine block, so to replace it it is cheaper to replace the engine. You will have to take the engine off and measure the crankshaft to get the right engine, OR, take the engine numbers to a Briggs dealer, and if he is helpful he can look it up and tell you what the original engine specs are.


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Re: Lawn Vacuum Engine Replacement... [Re: old1] #4578955
11/19/17 02:05 PM
11/19/17 02:05 PM
Joined: Jun 2013
Posts: 701
Northeast
Finz Offline OP
Finz  Offline OP
Joined: Jun 2013
Posts: 701
Northeast
Thank you....


God Bless America
Re: Lawn Vacuum Engine Replacement... [Re: Finz] #4578984
11/19/17 02:42 PM
11/19/17 02:42 PM
Joined: Dec 2004
Posts: 1,530
Pennsylvania
Slick17601 Offline
Slick17601  Offline
Joined: Dec 2004
Posts: 1,530
Pennsylvania
Go to Napa and geg a Keen-sert to properly repair the threads.

Re: Lawn Vacuum Engine Replacement... [Re: Slick17601] #4578990
11/19/17 02:50 PM
11/19/17 02:50 PM
Joined: Aug 2013
Posts: 2,531
Central Maryland
HangFire Offline
HangFire  Offline
Joined: Aug 2013
Posts: 2,531
Central Maryland
Originally Posted By: Slick17601
Go to Napa and geg a Keen-sert to properly repair the threads.

Or Time-Sert, or Heli-Coil... there are options here.


Various musings: http://hangfire.net
Re: Lawn Vacuum Engine Replacement... [Re: Finz] #4579043
11/19/17 03:27 PM
11/19/17 03:27 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Correct crankshaft for Type Number 1777 is:
Briggs & Stratton 694478



Finz - If you replace the engine, you'll need an engine with that same crankshaft measurement.

Re: Lawn Vacuum Engine Replacement... [Re: Finz] #4579074
11/19/17 04:03 PM
11/19/17 04:03 PM
Joined: Jul 2013
Posts: 2,212
Outer Banks, NC
NormanBuntz Offline
NormanBuntz  Offline
Joined: Jul 2013
Posts: 2,212
Outer Banks, NC
A good internet source for OPE parts is Jack's Small Engines. Try Google. Jack's has parts diagrams so long as you know your Yard Machine model number. They also have good service and prices.


2017 Honda Odyssey SE, 15K
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Re: Lawn Vacuum Engine Replacement... [Re: Finz] #4579110
11/19/17 04:24 PM
11/19/17 04:24 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
What you do is measure from the end of the crankshaft to the engine mounting flange like this:

How to measure crankshaft length for replacement engine

Finz - I think your engine might be a 25mm x 3-5/32'' crankshaft size but not sure.

http://www.smallenginewarehouse.com

Re: Lawn Vacuum Engine Replacement... [Re: NormanBuntz] #4579283
11/19/17 06:42 PM
11/19/17 06:42 PM
Joined: Mar 2004
Posts: 20,758
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,758
Upstate NY
Originally Posted By: NormanBuntz
A good internet source for OPE parts is Jack's Small Engines. Try Google. Jack's has parts diagrams so long as you know your Yard Machine model number. They also have good service and prices.


I have had good and bad results with Jacks. I might still go to them but would not be the first place I called for parts.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Lawn Vacuum Engine Replacement... [Re: Merkava_4] #4579696
11/20/17 05:37 AM
11/20/17 05:37 AM
Joined: Jun 2013
Posts: 701
Northeast
Finz Offline OP
Finz  Offline OP
Joined: Jun 2013
Posts: 701
Northeast
[quote=Merkava_4]What you do is measure from the end of the crankshaft to the engine mounting flange like this:

How to measure crankshaft length for replacement engine

Finz - I think your engine might be a 25mm x 3-5/32'' crankshaft size but not sure.




Thanks Merk and everyone for the feedback


God Bless America

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