TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Discussion Forum

Briggs and Stratton Rebuild HELP!

Welcome Guest, Log in or Register

Author

Matt Bernazzoli

05-11-2003 19:15:18

Report to Moderator

I have a quick question! I am getting ready to rebuild an 8hp Briggs and Stratton engine that ran OK just had low compression. I pulled the head off and cleaned the top end quite well. At top dead center I can turn the intake valve. I was told that I shouldn�t be able to do this, and I couldn�t till I cleaned the valve. The valves also have some pitting. I need to know how often the valve seats go bad in these engines, and are they replaceable, and if you all think that is my problem! I was thinking a quick ring job till the guy that I get my parts from told me that if I can turn a valve at TDC the engine is no good and to find another one! Do you all think that a total rebuild with new valves and springs, and everything could save it or should I just buy a replacement? This is the original off of my 67 Gilson M7 tractor. Thanks a lot and please let me know what you think!

[Log in to Reply] [No Email]

Alan Hull

09-05-2005 11:27:52

Report to Moderator

Re: Briggs and Stratton Rebuild HELP! in reply to Matt Bernazzoli, 05-11-2003 19:15:18

Just changed the ignition, cleniod, fly wheel gear, starter, coil/magneto, spark plug... When I first tryed to start the engine it sheared the key on the flywheel and backfired. Got that fixed, Now the engine runs fine untill you start the blades the the pull on the engine is very noticable, seems like maybe a carb problem??? I am at a loss with this thing. It is a 14hp that is on a cub cadet lawn tractor... HELPPPPP PP

[Log in to Reply] [No Email]

Daniel Wilson

02-02-2004 07:58:17

Report to Moderator

Re: Briggs and Stratton Rebuild HELP! in reply to Matt Bernazzoli, 05-11-2003 19:15:18

I was wondering where that I could find an acceptable compression value list in psi for 2 stroke and 4 stroke cycle engines? Preferrably somewhere on the internet. Thank You!

[Log in to Reply] [No Email]

Dave Hearn

09-16-2003 15:10:41

Report to Moderator

Re: Briggs and Stratton Rebuild HELP! in reply to Matt Bernazzoli, 05-11-2003 19:15:18

Hi, How did you check compression? I hope not with a guage. B&S Easy Spin start engines have valve overlap. compression is checked by spinning engine BACKWARDS! it should "rebound". a new! motor reads lousy compression when checked with a guage. Make sure valves arent sticking, and look for burnt valves with a good light. check for a big ridge worn at top of cyl with fingernail. if ok, Put head back on and give it a spin BACKWARDS It should spring back against compression. you can feel it. If it just ran bad, pull the flywheel with a B&S puller from mower parts shop (cheap) and check the points! They are always burned in an oldie 'cuz they are hard to get at. if they are bad, clean them and regap and try it out. if it helped, get an add on magnatron kit, and kiss points goodbye. Just my 2 cents, I have made plenty of 'em run with a good clean up and fixing weak spark. clean crud out of carb too. pull out needle valve & JET with screwdriver before taking apart carb on horiz.shaft engines! Good luck!

[Log in to Reply] [No Email]

Joey Byrd

07-13-2003 19:05:13

Report to Moderator

Re: Briggs and Stratton Rebuild HELP! in reply to Matt Bernazzoli, 05-11-2003 19:15:18

I have just rebuilt a b&s 12 hp engine model# 281707. I had to replace the carb on this engine with one that was on a 12.5 hp b&s model# 289707. I need to know if its possible to interchange the govenor/carb linkage between the two in order for the govenor to operate properly, or if any one has a diagram of either of the two for the spring and linkage connection points. The engine runs fine but it overheats because the governor runs wide open when the throttle is opened. I'm lost on this any help would be greatly appreciated. Also I have the cable hold down assemblies for both carbs and everything will interchange perfectly. Thanks, Joey Byrd

[Log in to Reply] [No Email]

Greg Scherer

07-23-2006 22:42:33

Report to Moderator

Re: Re: Briggs and Stratton Rebuild HELP! in reply to Joey Byrd, 07-13-2003 19:05:13

This is peculiar. I have been trying to get my Briggs 281707 motor running for a month now. After trying almost everything, I thought it was the head gasket, so I changed that too, but it still won't start. I have a friend who had an old rider mower he was going to scrap. It had a Briggs 289707 so I took the motor an am in process of putting it on my rider. I am trying to figure out where the carb linkage goes also. Did you ever find a good diagram?

Greg Scherer

[Log in to Reply] [No Email]

francis j rogan

06-17-2006 08:05:44

Report to Moderator

Re: Re: Briggs and Stratton Rebuild HELP! in reply to Joey Byrd, 07-13-2003 19:05:13

engine back fire.think i have tsuck valve.do not now were the inspection plat is to valve is thankyou

[Log in to Reply] [No Email]

Jim Togno

04-09-2006 05:59:14

Report to Moderator

Re: Re: Briggs and Stratton Rebuild HELP! in reply to Joey Byrd, 07-13-2003 19:05:13

I have the same situation, and need some help in installing the carb linkage. Any help would be greatly appreciatede.

[Log in to Reply] [No Email]

Mogul

04-08-2007 19:24:57

Report to Moderator

Re: Re: Briggs and Stratton Rebuild HELP! in reply to Jim Togno, 04-09-2006 05:59:14

...I have a 11 horse B/S on Murray 11/36 mower. I can't find diagram on how to hook up linkage on the carb/governor/throtle. Have you had any luck locating directions??? Thanks ..Les

[Log in to Reply] [No Email]

Ray Workman

04-18-2005 17:16:39

Report to Moderator

Re: Re: Briggs and Stratton Rebuild HELP! in reply to Joey Byrd, 07-13-2003 19:05:13

Can you please tell me where I can go to get a Briggs and Stratton 11 horsepower 4 cycle carburater linkage diagram

[Log in to Reply] [No Email]

michael

11-13-2003 21:02:15

Report to Moderator

Re: Re: Briggs and Stratton Rebuild HELP! in reply to Joey Byrd, 07-13-2003 19:05:13

i have an old b&s engine. i am taking it apart and rebuilding it. how do i get the flywheel off and the crankshaft and piston out?

[Log in to Reply] [No Email]

mastermechanic35

04-07-2005 13:30:22

Report to Moderator

Re: Re: Re: Briggs and Stratton Rebuild HELP! in reply to michael, 11-13-2003 21:02:15

michael, flywheel take a air impact gun and get a 3 prong or more puller and pull that off...that's easy.. and take the pully off of the other side of the motor now, drain the oil out so u wont get it everywhere when u take the side of the block off... now take the side of the block off...and in there you will see cam, piston, piston rod, govener gear, and the crankshaft..now, pull the cam out and the little valve rods will come off too, just set them aside, with ur other things now unbolt the piston and take the cap off of it now see if u can push the piston to TDC (top dead center) aka (compression stroke) to get it out of the way....now see if u can pull the crankshaft out, if u cant take a rubber mallet and hit it softly and try to knock it out, the piston rod might get in the way just get it out of the way the best u can, now pull teh piston out..

-Chris

[Log in to Reply] [No Email]

Willy

05-11-2003 20:17:35

Report to Moderator

Re: Briggs and Stratton Rebuild HELP! in reply to Matt Bernazzoli, 05-11-2003 19:15:18

The valve clearance is set by grinding the end of the valve stem. Any good engine or machine shop should be able to reface the valve and valve seat and grind for proper clearance. Might as well do rings while you ar in it.

[Log in to Reply] [No Email]

mike

05-11-2003 21:37:53

Report to Moderator

Re: Re: Briggs and Stratton Rebuild HELP! in reply to Willy, 05-11-2003 20:17:35

First, valves are supposed to turn. Otherwise, if they warp without turning or something is a little out of spec, with the valve turning the whole seat stays at one smooth surface all the way around. All you need to do generally is lap the valves in and good to go with the exception of making sure the tappet clearences are good. And, I agree, while your there hone and install new rings. If you look at the first 2 digits of the serial number is the year the motor was made. It may be wise to install a new connecting rod while your there also if it has a few good years on it.

[Log in to Reply] [No Email]

Jon Hagen

05-12-2003 19:56:27

Report to Moderator

Re: Re: Re: Briggs and Stratton Rebuild HELP! in reply to mike, 05-11-2003 21:37:53

Top dead center on compression should have both valves firmly seated. But TDC on the exhaust stroke will have the camshaft on "overlap" which means the exhaust is just closing and the intake valve is just starting to open. You may well be able to spin both valves at TDC on the exhaust stroke. Turn the crankshaft 1 turn to get it on TDC compression stroke then try again.

[Log in to Reply] [No Email]

John Curry

05-27-2003 19:45:28

Report to Moderator

Re: Re: Re: Re: Briggs and Stratton Rebuild HELP! in reply to Jon Hagen, 05-12-2003 19:56:27

If the valve stem is worn you can help remove some of the shake by just replacing the valve then laping it in. I agree the valve should spin during overlap but not at TDC compression, If it does the the spring could be weak. If you are on a tight budget, most likly just a few new parts will get you a long ways down the yard.
John

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy