That is a 1977 model with the D-600 engine, it is still one of my favourite mowers. Simple and reliable. Take good care of it, parts are getting scarce.

I did not recal that D600 mowers had Magnesium decks??

Walt Conner

My 5270 D600 has a magnesium deck.

The 'green ooze' that came out was just old oil residue - it's all good! You're very lucky to have that one - it's a classic LB in every way. Wait until next spring when the grass burning on the muffler mixes with the oil in the exhaust - it don't git no better'n that! Is it 32:1 or 16:1 mix? Be careful to get it right.

I don't find that serial number in the range for the 7264 from Lawnboy's listings. That's not really unusual though since Toro really didn't give a crap about the older models after they bought Lawnboy in 1989. The serial numbers listed for the 7264 end at 699999999 in 1976 so it was most likely made at the tail end of 1976. It would be a 32:1 mix for that engine. It should be a great little mower.

orangedotfever,
that's what I mixed it at: 32:1.
that's what is on the plate that's riveted to the back of the deck. That's what I wanted to know...when it was made.
I don't really need it , but it has value anyway, just 'cause it's unique. My Lawn is way too big too cut with a 21". I have 2 acres, and I use a Bunton 36" with a Honda 13 h.p.

Lawnboys records are not very accurate at times and Toro really doesn't care because they want Toro to be the top tier brand. So, that being said, your mower was most likely made from parts that Lawnboy had left over as they were clearing inventory in preparation for the launch of the F series in 1978. Throwing together a few 7264's and just running up the serial numbers was just a way to clear out space. As said before, your mower was most likely made in late 1976 or early 1977 and the records were not kept current.

I have a 52" County Clipper zero turn that I mow about 2 acres with but I still use a few Lawnboy pushers to trim around everything so I can just fly with the ZTR.

Depending on condition and finding the right person, you could get a decent price for that mower.

I have a 19" 7072 LB, nothing special as LBs go. I use it as a trimmer. It is fun to use a 30 yr old mower and I get a grin every time I use it. I love the exhaust burble and the MMO laced exhaust. It was a freebie that needed nothing to put it in use. This fall I picked up a newer LB Silver with a 4 stroke. All it needed was a couple of 3/8 bolts to hold the engine on. It too is nothing special, but it starts on the first pull and drives nice. I'll wil prolly never need to buy another walk behind mower.