Uses the online chat with manufacturer web site - can request manual :
https://www.briggsandstratton.com/na/en_us/product-catalog/engines/push-mower-engines/professional-series-engines.html
https://www.briggsandstratton.com/na/en_us/product-catalog/engines/push-mower-engines/professional-series-engines.html
Try Parts Treecom
SOURCE: briggs/stratton XM 6.75 hp quantam engine cv2300-OMBC
I have a brigg & Strat, works great but the oil keeps turning black, and it leaks throught he air cleaner. It is approx 1 yr old, bought it used but it looks new
SOURCE: 10 HP Briggs and Stratton Throttle assembly
www.briggsandstratton.com/maint_repair/manual_and_more/
Then print in model no etc. You should get owners manual as well as parts list.
SOURCE: timing for briggs and stratton 15.5 engine
There are no timing marks, timing is correct when the flywheel key is in place, the flywheel is properly torqued and the air gap for the magneto is properly set
SOURCE: Briggs & Stratton Briggs Stratton Intek V -
these are common for doing this ,if you dont want to pull it down and hone the cyl. then i would use a heavier oil say 20w/50and that will probabley solve your problem
SOURCE: Briggs and Stratton pressure washer fuel leak
You've hit the nail on the head.The float,needle and seat are stuck wide open.Once the carburetor bowl is full of fuel the float rises up on top which pushes the needle back into the seat shutting of the flow of fuel.As the engine consumes that fuel the float drops and opens the needle and seat filling the bowl and shutting off the fuel again.Things that cause this process to not work are:forgetting to empty or run out the fuel before storing it for the winter.Sediment buildup in the bowl.Mineral deposits in the needle and seat.
Not emptying out the carb can leave water in the bowl which freezes,crushing the float.It also promotes sediment buildup and mineral deposits.The float when crushed or cracked will not float,nor shut off fuel.Sediment takes away capacity of fuel in the bowl,very necessary for wide open throttle.Mineral deposits build up to the point that the needle and seat can't make a good seal so fuel will continue into the carburetor.
Enough information yet?
To repair,take the nut off the bottom of the carburetor bowl.There are the float and needle and seat assemblies.All three need to be replaced,$10 max.After you get the parts replace one piece at a time so you can see how they go together.Next replace the spark plug, engine oil and air cleaner.They are fuel fouled and even if you could get the engine started will only add more damage to your engine.BEFORE you put the new plug in cycle the engine by pulling the starting cord a few times to get rid of the excess fuel.When there's now more fuel in the cylinder replace the plug,filter and oil.
That's it!Take your time and you can do it just fine.Re-post if you have any more troubles.
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