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I need some help figuring out my model #, mainly the First number/letter. Ryobi 6.5 horse briggs.
"___K02-0531-E1", Type: 050301 FB, could someone figure out the first character by these. numbers are stamped above the muffler. It's so rusted i cant tell, even after cleaning.
So it's "something"K02-0531-E1.

Double check the model number that you can read. the 0531-e1 is not a good engine for a k02. could be a 123K02-0513-E1

All i still see is 3K02-0513-E1, but i can make out "something" before the 3, but it's too dang rusty.

But that model # you listed in your post "looks" like my engine.

i got some light sand paper, and the number looks like 433K02, but im gonna go triple check, :confused2::confused2:


EDIT Yep, it's 123K02, Helped changing the angle of my flashlight.

thanks for your reply.
But i would like to figure out which parts fit my code date, 050301 FB.

is it before 11070100
or after 11063000

Scrubcadet10 said:

i got some light sand paper, and the number looks like 433K02, but im gonna go triple check, :confused2::confused2:

Click to expand...

Nope it's a 123k02 No such # as 433 for a 6.5 Hp Briggs.......... The 12 is the cubic inches.......

Plus Tard Mon Ami ~!~!

A high res camera on a phone might pick up the numbers ............

Yep, it's 123K02, Helped changing the angle of my flashlight. :wink:


i would like to figure out which parts fit my code date, 050301 FB. the code dates boggle my mind.
is it before 11070100
or after 11063000

The first two digits is the year of manufacture. So it is before 11070100 Which by the way is July 1 2011, and the 11063000 is June 30 2011 your date is March 1 2005;

Thanks, much appreciated.:thumbsup:

i took the head off the engine to check the cylinder, no score marks and good condition, cleaned carbon off the head and piston crown.
One question, 3 head bolts that i took off had dirty engine oil on them. on the threads and up to the bolt head. I didn't tilt the mower up with the head face down or anything... Head gasket leak?
I replaced gasket with a new one.