r/BriggsEngines

First is my engine, pics 2 and 3 are an engine on marketplace. I don't know much about this stuff. Can these be swapped? They seem the same other than quiet/gold.

I tried to find info online but I can't make much sense of it.

Thanks

Curious if anyone has seen this before.

This vanguard (350777, date code has it as a 1992) will crank and move the valvetrain no problem, but has absolutely 0 compression. Stuck a screwdriver in the spark plug holes, rotated the engine by hand, and... The pistons seem to not move at all! No bent pushrods, valves operate absolutely perfectly. Engine only has about 900 hours on it

Did this engine somehow throw both connecting rods, while keeping the crank and cam intact...? How the hell would that even happen?

I recently picked up an older Husqvarna mower (YTH 2348) with low hours (144) for $150. The story goes that an older guy had it and only used it for a few seasons before not being able to safely operate it anymore, so it sat for years. I got it home and got it running. It had obvious problems. I pulled a head and the piston didn't move when the crank was rotating. I pulled it apart and as you can see, it's a mess. This is the 445577 engine. I have the 407777 on an older mower that has a bad transmission. I would like to do the engine swap. I have already stripped the 445577 and have everything handy. I know it will physically fit, but the 407777 had a manual blade engagement lever where the 445577 has the electronic clutch. The question I really have is, does the 407777 have the mounting points for the electronics I pulled from the 445577? I figured I would swap the flywheel, stator, coils and all. I just drug the old mower out of the poison ivy before it got too dark to mess with it anymore today. I did a little bit of research about the compatibility between the two but it was not extensive. I'm hopeful that someone here will know. Thanks!

I'm out of options.

- New oil

- Gasoline is flowing

- Sparkplug works

- Battery is charged

but it just wont start. Is there anything i'm missing. Pedalswitch and seatswitch are working. If i take out the sparkplug i can see it sparks. I even got shocked trying this 😁

In the video, you can hear 4 start attempts.

The first is with the throttle lever (turtle–rabbit) in the middle, the second on rabbit, the third on full rabbit, and the fourth varies.

It seems there is no ignition from the gasoline. Does it has to do something with the valves maybe?

Hi there, i"m trying to get this engine running. It's a B&S 11Hp 259707 flathead engine.

It starts, runs for 30s and spits out fuel via the airintake.

The carburateur is totally cleaned so i think it has something to do with a wrong setting of the intake valve.

When i openend the chamber where you see the springs there was a lot of fuel flowing out of it.

Is this normal?

Anyone a idea how to adjust those valves?

Thanks

I can't for the Life of Me figure out what I'm missing for the throttle, is there a spring I am missing?

Hello, I have a Briggs and Stratton 26 HP engine on my Craftsman PYT9000 that keeps surging. Can anyone help me by telling me what could be wrong with it and how to fix it. I’m new to mowers but I have worked on cars.

The mower recently started backfiring, first I replaced the spark plugs and then changed the oil. I thought maybe I put in too much oil so I completely removed the plugs, all oil, and carb. I’ve since fully rebuilt the carb with new parts, left every orifice open to air out and now fully reinstalled with new oil.
What’s going on?

Husqvarna Ride On Mower with Briggs Intel V-Twin Engine

Seems to misfire when warm. If I engage the choke it smooths out. Not sure which one it is. I have the one i thinknit is circled. Its a briggs vanguard 14hp v-twin.