Only Cub Cadets

PLEASE PATRONIZE OUR SPONSORS!

Cub Cadet Classics R. F. Houtz and Sons

Patton Acres Binder Books

CC Speciaalties IH Cub Cadet Parts

Cub Cadet Parts & Service


If you would like to help maintain this site & enhance it, feel free to donate whatever amount you would like to!



Only Cub Cadets Chat!

OCC Archives


Go Back   Only Cub Cadets > Cub Cadets > Cub Cadet Engines > Briggs & Stratton Engines

Notices

Reply
 
Thread Tools Display Modes
  #1  
Old 10-06-2014, 06:38 PM
jm9816 jm9816 is offline
New Member
 
Join Date: Jul 2011
Location: Oklahoma
Posts: 3
Default Model # of 18.5 hp

Hey guys, I'm kinda new to this engine thing but I have a B&S 18.5hp that I think is gonna have to have something done to the governor. When I go to look for a service manual, they need the engine model #. I looked on B&S site and my # is stamped on the ohv cover but it doesn't match the format on the website. Mine is stamped: 31Q777 0305E1 040826ZD. The website shows the format of XXXXXX-XXXX-XX. Could someone tell me if the first 6 digits is the model #?
After I figure that out, I'm probably going to need more help as I need to adjust the valves because it is really hard to turn over when trying to start.
Also it won't idle down and the mechanic told me it was the governor that needed to be replaced and it would be cheaper to replace the engine.
Any help would sure be appreciated.
Thanks, John
Cub Cadet LT1018 42"
Reply With Quote
  #2  
Old 10-06-2014, 07:36 PM
Oak's Avatar
Oak Oak is offline
Grand Member
 
Join Date: Jun 2009
Location: Georgia
Posts: 4,186
Default

I think that is an Intek engine. This looks like what you need but you may want to call them first.

http://tewarehouse.com/273521?sc=2&category=468
__________________
This ain't no hobby....it's an addiction
Reply With Quote
  #3  
Old 10-07-2014, 01:42 PM
jm9816 jm9816 is offline
New Member
 
Join Date: Jul 2011
Location: Oklahoma
Posts: 3
Default

Thanks for the reply. I forgot to say that this is a single cylinder engine. Would it say what kind of engine it is somewhere on the engine?
I'm not having much luck finding a repair manual with the model number entered like it is stamped on the OHV cover.
There is a bar code sticker on fan housing. It has a bar code then the numbers
31Q7770305E1 then another bar code and 040826ZD07547.

Thanks, John
Reply With Quote
  #4  
Old 10-07-2014, 03:44 PM
Oak's Avatar
Oak Oak is offline
Grand Member
 
Join Date: Jun 2009
Location: Georgia
Posts: 4,186
Default

That engine was probably built for Cub for that tractor so it may be hard to find the exact manual. I typed in 310777 and came up with what probably looked like what you have. Do a search on that and see if it looks like your engine.
__________________
This ain't no hobby....it's an addiction
Reply With Quote
  #5  
Old 10-07-2014, 06:02 PM
J-Mech J-Mech is offline
Grand Member
 
Join Date: Apr 2013
Location: Oblong, Illinois
Posts: 17,713
Default

I did some research, then I actually read all the way through your post. Sorry, I had just skimmed it. The operator and parts books are NBD to get, but you'll more than likely end up with a manual that covers a bunch of motors to get the one you need.

Lets start with this. The model you listed: 31Q777 0305E1 040826ZD. But B&S needs XXX-XXXX-XX. SO you use 31Q777-0305-E1. Don't worry about the 040826ZD that basically says it's in a Cub Cadet. Now, after reading your issue, I highly doubt you have a governor problem. See, when you idle down, you are forcing the throttle closed, and completely bypassing the governor. IF the governor is still trying to control the motor, it's not set right. I seriously doubt it has anything wrong with the governor. Time and time again, I'm disappointed with diagnosis' of said small engine "mechanics". Also, did you check to see that none of the linkage is binding or that the idle stop screw isn't too far out? Here's a good test. Set the throttle on the dash just above idle. Then (motor OFF) reach down and "flip" the throttle on the motor. Does it go wide open then close? Does it seem "stiff"? It should flop around very easily. If it doesn't, it's binding.

Researching that engine, I also see a lot of posts on forums about failed head gaskets. This could also be your idle problem. If it can get air into the cylinder by-passing the carb (Vacuum leak) then that can cause it to idle fast. I'd suggest a compression check. Adjusting the valves, like you said is also a good idea. Perhaps the compression release isn't working properly.
Reply With Quote
  #6  
Old 10-08-2014, 08:36 AM
dbuck dbuck is offline
Senior Member
 
Join Date: Jun 2009
Location: Indiana
Posts: 567
Smile

I just ran 31Q777-0305-E1 on Parts Tree an the IPL came up.
__________________
Don B, USAF 1962-1968, Ft. Wayne, IN
Reply With Quote
  #7  
Old 10-08-2014, 01:52 PM
jm9816 jm9816 is offline
New Member
 
Join Date: Jul 2011
Location: Oklahoma
Posts: 3
Default

Thanks everyone for the info.
J-Mech, I'm going to check the throttle for binding and then set the valve clearances. It just runs at full throttle all the time.
Also, how can I tell the intake from exhaust valves to set the right clearances?
I am going to order a B&S repair manual. I think the part# is 276781.
It will probably be tomorrow b4 I can get to work on it.
Thanks everyone for making my job a lot easier. I'll let u know how it turns out. (and probably have a lot more questions).
Thanks again,
John
Reply With Quote
  #8  
Old 10-08-2014, 02:08 PM
J-Mech J-Mech is offline
Grand Member
 
Join Date: Apr 2013
Location: Oblong, Illinois
Posts: 17,713
Default

When you say it runs at full throttle...... I hope you mean governed RPM, and not open RPM.

If it runs at WOT, did you check to see if the cable is working? That all the linkage is attached? IF the throttle cable is working, and the governor is bad, you would still be able to achieve idle, so I don't understand what's going on. I am guessing that you have a broken throttle cable, or it's bound up.

On the valve thing. It's really simple. The exhaust valve is the valve closest to the exhaust manifold (muffler). The intake valve is the one closest to the intake (carburetor).
Reply With Quote
Reply

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

Forum Jump


All times are GMT -4. The time now is 01:52 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.

Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.

MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.

This website and forum are not affiliated with or sponsored by MTD Products Inc, which owns the CUB CADET trademarks. It is not an official MTD Products Inc, website, and MTD Products Inc, is not responsible for any of its content. The official MTD Products Inc, website can be found at: http://www.mtdproducts.com. The information and opinions expressed on this website are the responsibility of the website's owner and/or it's members, & do not represent the opinions of MTD Products Inc. IH®, INTERNATIONAL HARVESTER® are registered trademark of CNH America LLC

All material, images, and graphics from this site are the property of www.onlycubcadets.net. Any unauthorized use, reproductions, or duplications are prohibited unless solely expressed in writing.

Cub Cadet, Cub, Cadet, IH, MTD, Parts, Tractors, Tractor, International Harvester, Lawn, Garden, Lawn Mower, Kohler, garden tractor equipment, lawn garden tractors, antique garden tractors, garden tractor, PTO, parts, online, Original, 70, 71, 72, 73, 76, SO76, 80, 81, 86, 100, 102, 104, 105, 106, 107, 108,109, 122, 123, 124, 125, 126, 127, 128, 129, 147, 149, 169, 182, 282, 382, 482, 580, 582, 582 Special, 680, 682, 782, 782D, 784, 800, 805, 882, 982, 984, 986, 1000, 1015, 1100, 1105, 1110, 1200, 1250, 1282, 1450, 1512, 1604, 1605, 1606, 1610, 1615, 1620, 1650, 1710, 1711, 1712, 1806, 1810, 1811, 1812, 1912, 1914.