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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 30104
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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I have a 675 series 190 cc engine on my lawn mower. Just now

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I have a 675 series 190 cc engine on my lawn mower. Just now it began blowing a lot of blue smoke and the oil level dropped to empty. I suspect a blown gasket but thought it might be as easy a the choke setting being off. My question is where is the choke? I scanned through my operators manual and don't see a reference to a choke.
What is the model number of the engine? Example(###) ###-####B1 , the choke , if it has one will be the first flap in the carburetor. Is this OHV engine. if it is, head gasket can be the problem.
Customer: replied 1 year ago.
I found: 091 002 57 54 336. Could that be it?
The engine seems self contained. What do I have to do the reach the first flap on the carburetor?
Customer: replied 1 year ago.
I don't know if it's an over head valve engine or not
http://outdoorpowerinfo.com/repairs/briggs_125k02.asp
numbers will be series of 6, series if 4, then letter number. Does this link above, look like it.
Curtis B. and other Small Engine Specialists are ready to help you
Customer: replied 1 year ago.
I don't see that kind of number series on the engine. I'm not a mechanic. I was hoping for something easy like a button I could push. I will take the mower to a small engine shop to have it evaluated. Thanks for your effort.
Thank you!