Plastic Gear- Officially Junk

[Mek-a-nik]

I posted about this on Perr.
12S912-0121-B1 090507 62
I bought this engine as part of a little-used pressure washer. I bought it from a customer when the crank gear (plastic) stripped the key out of itself and he didn't want to try another one.
I fixed it, used it a few times, had no problem. (Other than the so-called "automatic choke". What's wrong with using a primer bulb?)
I have since gotten a bigger pressure washer, so I offered this for sale to another customer. I told him to try it out and pay me if you want it.
He used it once. Says it won't start now. The valves aren't moving. (It had to break while it was running, he didn't say that.)
It's not his fault, no matter what he's leaving out of the story.

Anyway, bottom line: Is Briggs by chance, servicing this with a steel gear? I'm not going to put another plastic (or whatever it's made of) one in it. One time, well okay. Twice, nah, palstic doesn't work.

[KE4AVB]

The 797521 timing gear is currently list as metal which replaces 795755
http://ecx.images-amazon.com/images/I/81aqEbnIqZL._SL1500_.jpg

[smallen]

mek replace with gear ke4 posted, leave out thrust washer when replacing plastic gear with new metal gear, this in the briggs 2010 update, this problem was in some engines used on pressure washers

[Mek-a-nik]

That's good to hear, KE. I guess they know it's a problem.
I've learned a lot about finding things on the web in the last few years, but that pic is great. I need to step up my "web-ability".
Thanks. I'll do this one more time with a steel gear.
Just caught your post, Smallen. Thanks. Will do.

[smallen]

check governor gear for damage when you go back into it

[jdbark1952]

Not an expert here but that gear looks like pot metal to me, anybody touch one with a magnet?

[Mek-a-nik]

I will when I get mine. Whatever it is, it has to be better than the plastic one.

[Mek-a-nik]

Got the gear. Me magnet schtiks reeeeely good.

[jdbark1952]

Got the gear. Me magnet schtiks reeeeely good.

Guess I need new glasses. I am glad it is real steel though.

[Mek-a-nik]

Just opened this up. It took out the govenor/oil slinger (pieces in the sump) and the cam, too.

It appears the cam gear (also plastic) turned on the shaft. (Though I can't move it by hand.) When I tried to install the cam, it wouldn't go in because the intake lobe now interferes with the counterweight on the crank. A picture of the cam on ereplacementparts shows the lobes in a different position relative to the timing mark than the one that came out of it.

I'm trying to picture what happened. If the crank gear key went first, how could the governor come apart, it's on the cam, which stopped when the crank gear went?
Maybe, the governor came apart first, overspeeding the engine and the crank gear then sheared it's key? (The key is what "went" on the crank gear.)
Or, when the crank gear key sheared, the cam stopped, the governor briefly sensed a slow down, and let the engine speed up until it stopped rotating?

I forgot that when I replaced the crank gear the first time, I put it together and the governor promptly blew. I shut it down quickly and replaced that, and it last a few hours, until this recent breakdown, while being used by it's potential new owner. Who knows how long it ran before he shut it down.

What came first, the chicken or the egg?