Help with Briggs-powered lawn tractor.


Old 05-20-16, 12:45 PM
Thread Starter
Join Date: Nov 2001
Location: CANADA
Posts: 298
Received 0 Votes on 0 Posts
Help with Briggs-powered lawn tractor.

My Yardworks (MTD) Briggs 19 HP lawn tractor has a problem.

It started a couple of weeks ago when the engine would only turn over with problems. The flywheel would only turn 1/2 revolution, then stop. After 4-6 tries, it would eventually rotate properly and the engine would start.

The battery is strong and boosting makes no difference.

Once the engine was warm it could be shut down and re-started with no problem.

But yesterday, when I tried to start it, when it did start after 4-5 tries, there was a puff of smoke and a slight burnt smell. I couldn't see where the problem was.

I proceeded to mow the lawn, with no problem and no smoke. After sitting, though, it would not re-start - no response at all - no clicking, no noises. Boosting makes no difference.

I borrowed a new starter, but it doesn't seem to make a difference.

Where do I go from here?

The Briggs motor model # is 4077770229E1.

All help appreciated as I have to mow my Dad's 2 acre lawn and my daughter's lawn, too in addition to my 1 1/2 acre.

Too, too much for my push mower, even in my younger days.
Sponsored Links
Old 05-20-16, 03:06 PM
Thread Starter
Join Date: Nov 2001
Location: CANADA
Posts: 298
Received 0 Votes on 0 Posts
A bit more info: the smoke/smell came from the front of the tractor. The solenoid is back under the seat, so I didn't think it could be the problem.
Old 05-20-16, 03:15 PM
chandler's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Dec 2005
Location: USA
Posts: 39,967
Received 2 Votes on 2 Posts
You'll need to check the seat pressure switch for continuity when depressed, then proceed to the solenoid to make sure it is getting power via the ignition switch. The compression type reaction you were getting when turning it over could be from a stuck valve. I have had good luck with PB Blaster's Lawnmower Tune up spray. If you should get it started again, remove the air cleaner, and with the engine at a pretty good rev, spray the PB into the intake. It will want to stumble, so let up occasionally. It will also smoke and kill all the mosquitoes for a bit, but it seems to loosen up valves and clears a bunch of gunk on pistons when I have used it.
Old 05-20-16, 09:07 PM
Join Date: Aug 2015
Location: USA
Posts: 243
Received 0 Votes on 0 Posts
You need a valve adjustment Bar none. ~!~!~!

It is a common thing ~!~!

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
Ask a Question
Question Title: