Ignition Timing


Old 06-02-03, 12:54 PM
Visiting Guest
Posts: n/a
briggs and stratton timing

trying to fix my neighbor's 8 hp briggs, it won't start, its got spark, cleaned carb, checked for stuck valves and both okay, seems like timing may be off because it backfires through the carb when trying to start it with the air cleaner off, how does one time this thing please?
Sponsored Links
Old 06-02-03, 01:50 PM
sandy2000's Avatar
Join Date: Nov 2000
Posts: 198
Old 06-02-03, 03:21 PM
Visiting Guest
Posts: n/a
thanks for the information, all looks like good stuff !!
Old 06-03-03, 02:07 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,819
Hello alame!

The timing is affected by the flywheel key. If it is sheared, it will cause problems like you described. Also if the carb is flooding, it may cause these symptoms. Let us know what you find!
Old 06-03-03, 09:10 AM
Visiting Guest
Posts: n/a
I'm going to check the flywheel today and it seems to be getting lots of gas almost to the point of too much so I took the tank off and let the carb dry out overnight, going to spray fuel in by hand and see what happens, apparently the carb was done once before and it ran okay for awhile then just got more difficult to start as time went on to where it just spins fast and won't start now, I'm thinking it's not the flywheel but will check it anyway, will let you all know what I find............
Old 06-04-03, 12:11 PM
Visiting Guest
Posts: n/a
flywheel checks out okay, did all the other electrical possibilties that were mentioned here, only thing left to do is rebuild the carb after soaking it in cleaner overnight and see what happens......
Old 06-09-03, 07:07 PM
Join Date: Oct 2000
Location: NE Conus
Posts: 505
Just a suggestion that might apply. Take another look at the flywheel. See if the magnet on the flywheel has any rust. Also look at the coil magnet, see if it has any rust on it. If so use a fine grade of sandpaper, or emery cloth, and clean the surface. This will help you get more juice and quicker starts.
This year when I took my Toro out of storage I had the same problems that you describe. I took down and cleaned the carb. and the whole fuel system and did the key checks to no avail. I then looked at the magnet and coil and they had a slight bit of rust( discoloration) to them. Hit with the sandpaper and it now starts on one pull!!! Could have saved myself a lot of time, pulls and anguish if I had thought to look there first!
Old 06-10-03, 09:52 AM
Visiting Guest
Posts: n/a
the flywheel does have a lot of rust on it but I thought because it has fairly good spark it would start, I 'm going to clean all that rust off, makes sense to me, thanks

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes