To keep water out of the engine if it rains
tractors are mostly used for agriculture purposes... so, if the exhaust pump is under the vehicle,the exhaust products(fine harmful particles,harmful gases) may damage the crop yield.... so, the tractors are designed manufactured such that the exhaust pump is upwards.....
Most tractors have the head (or top half) of the engine facing up so the exhaust goes up anyway. Also some tractors are equipped with rear exhaust for orchard and low ceiling work. Hot , noxious, and loud exhaust gases (more so on larger engines) are discharged up above the operator for obvious reasons.
If you mean on the exhaust manifold, penetrating oil and gently tapping around rod and on ends . Over & over with oil !!
flapper
There are two main types of tractors that are used. These tractors are large farming tractors and small personal tractors.
The duration of The Flapper is 1.47 hours.
The "flapper in the throat" is called the epiglottis.
The Irresistible Flapper was created in 1919.
The Perfect Flapper was created in 1924.
The Flapper was created on 1920-05-10.
To fix a flapper for a toilet that is not sealing properly, you can try adjusting the chain length, cleaning the flapper and the seat it sits on, or replacing the flapper if it is worn out.
Common issues with a flapper toilet include leaks, running water, and incomplete flushing. These problems can be resolved by adjusting the flapper chain, replacing the flapper, cleaning the flapper seat, or checking the water level in the tank.