no major problems bar paintwork can get bad but like any tractor you look after it and service it . it will last a lifetime.
The Massey Ferguson 390 typically features a closed-center hydraulic system. This design allows for more efficient operation, as hydraulic flow is directed only when needed, maintaining pressure within the system. This contrasts with an open-center system, where hydraulic fluid continuously circulates, leading to potential inefficiencies.
The chassis number on a Massey Ferguson 390 T is typically located on the left side of the tractor frame, near the front axle or on the engine block. It may also be found on a metal plate attached to the tractor’s body. For precise identification, refer to the owner’s manual, as the location can vary slightly depending on the model year. Always ensure the tractor is turned off and secure before attempting to locate the chassis number.
To adjust the valve clearance on a Massey Ferguson 390, first, ensure the engine is cool and remove the valve cover. Rotate the engine to bring the piston of the cylinder you are adjusting to the top of its compression stroke (TDC). Using a feeler gauge, check the clearance between the rocker arm and the valve stem, adjusting as necessary by loosening the lock nut and turning the adjusting screw to achieve the specified clearance. Repeat this process for each cylinder, then reassemble and torque the valve cover properly.
The answer to the problem 390 times 20 is 7800. The easiest way to work multiplication problems is to use a simple calculator. Another easy way is to know your mulitplication tables.
390 squared is 390 times 390 = 152,100
46% of 390= 46% * 390= 0.46 * 390= 179.4
390 is divisible by 3: 390/3 = 130 390 is not divisible by 9: 390/9 = 43.3 recurring (that is, 43.3333..) 390 is divisible by 10: 390/10 = 39
20% more of 390= 390 + (0.2 x 390) = 468
70% of 390 = 273 = 70% * 390 = 70%/100% * 390 = 273
110 percent of 390 =429 110% of 390 = 110% * 390 = 110%/100% * 390 = 429/1 or 429
390 x 3 = 1170 390 ÷ 3 = 130
390 = 39,000%