1987 john deere 750 compact tractor 4 wheel drive, wont start

Hydraulic steering issue. Someone else has it turning left.

https://www.google.com/search?q=John+Deere+2305+compact+tractor+difficulty+steering

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Operating - Operator's Manual - John Deere

manuals.deere.com/cceomview/...A9/Output/OMM139226_A95.html
Slow down before you make a sharp turn or operate on a slope. ... Before starting engine to drive tractor, adjust operator seat to desirable position. ..... If lock does notdisengage, depress one turn brake pedal, and then the other. ... The 2-wheel drive (2WD) / 4-wheel drive lever (A) enables the tractor to be operated in two or ...

A Guide To Safe Farm Tractor Operation - National Ag ...

check the voltage at the foot pedal, if you have 12 volts there, then check at the shifter, if you have 12 volts there then check at the motors, if you have 12 volts there then you have bad motors

Power from the battery direct to a big terminal on the solonoid. The other big terminal leaves the solonoid for the starter. Then there are either one (1) or two (2) smaller terminals on the solonoid. If there is one then the body of the solonoid is the ground. With two of course the extra is the ground. Make sure the solonoid has a good ground.
Remove the smaller terminal from the solonoid ( usually yellow) and connect the positive end of a multimeter or a DC volts tester to it. ground the other end of the tester and turn the ignition key to start. If you get 12 volts to the wire end then the solonoid is bad and should be replaced. If no voltage is registered then the ignition switch is bad or an inline safety switch such as: nuetral, clutch/brake, PTO, seat ( Operator Presence Switch). Or you have a bad wire, bad ground, bad connection somewhere in the starting system.

Go to this website you will find everything http://www.kidswheels.com/Search-Parts-by-Brand/Peg-Perego-Parts/John-Deere-Series-Parts/John-Deere-Parts/John-deere-utility-tractor-IGED1069-Parts.html

nope it will fry out the motors, you can order an oem 12v battery here www.powerwheelsoutlet.com

check the battery and the charger and make sure that they are putting out at least 12 volts

check the battery and charger with a multimeter and make sure that they are showing at leaast 12 volts

test the battery and charger with a multimeter and make sure that they are showing at least 12 volts

Check the brown wire feeding your voltage regulator,its between batt and steering wheel behind left side of frame.LX100 series machines had a problem with brown wire not fully contacting terminal in regulator.You will know you had bad contact if plastic is discolored.