Vangard v twin valve adjustment - Briggs & Stratton Briggs Stratton Vanguard V - Twin Vertical Ohv Engine with Electric Start 23 Hp, 1" X 3 5/32" Shaft, ModelNo. 386777 - 0036 - E1

1.7 liters when you change the filter also.

inlet .010" exhaust .012" cold

.004 -.006 and make sure cylinder is on Top Dead Center...

Find top dead center on piston.Set valves at 0004/0005.she should start easy.

anytime you deal with small engine parts you MUST be armed with the engine model number, code and type. on late briggs these are on one of the valve covers.

This is most likely being caused by one of the safety switches cutting off current flow to the solenoid. turn the key on and jump the solenoid and see if you get spark to the plugs. If so you have a safety switch issue...one is under the seat, one is on the clutch pedal, one is on the reverse position and one is on the blade engagement lever. hope this helps you

model # 12f702-1824e1 mower( that uses weedeater string) had a spring come off the carberator and I don't know where to put it back on.

it sounds like the needle valve is stuck open. This is connected to the float, and when the bowl gets low the float pulls this needle out of its seat and allows fuel to run in. Sometimes tapping on the bowl can resolve this. The needle is usually made of brass and can become corroded from water or from sitting or wintering over. if you take the bowl off you could also clean this up if tapping a little does not resolve the issue.

Valve slash and clearance adjustments should only be performed by certified mechanics and is not a job for the garage or novice hands on type.
If you still decide to proceed, I suggest you get your hands on a maintenance manual which will list the procedure step by step, including proper torque values.