I have a strange question regarding a Briggs and Stratton Quattro engine (the 4hp variety) sorry I don�t have the model type and code on me at the moment.
A guy dropped it around the back of my house and for some reason it got tipped up on its nose and leant against the wall. I was away for a few days and thought it was a little strange when I returned home.
The mower wouldn�t turn so I assume oil had worked its way to where it shouldn�t be. I took off the engine head and oil poured out everywhere. I also removed the valve chest cover to rid the excess oil. I left the mower tipped up with inlet valve open to rid the excess oil.
I fixed the obvious problem being the connector from the coil lead to the plug as it was loose and rusted. I also put on a new boot for good measure. It now has great spark.
So:
Great spark
Carby is clean with new diaphragm
Cleaned the exhaust as best as possible to remove excess carbon (unconventioned tapping with the hammer and then shaking out excess carbon)
Air Filter is clean and oiled
Coil re-gapped
Fixed starter cord as it was about to snap.
Valve clearances are pretty close to specs.
The bore was unmarked
Re-filled with second hand oil to the correct level (new oil goes in when the engine is right to go!)
Now all I can get is the odd pop from the exhaust with black smoke being emitted!
It has a deadmans bar that appears to be operating correctly.
I�ll post some photo�s tonight.
I am obviously missing something and would appreciate some help!
