Deere Gear

John Deere Riding Lawn mower starts, but won't go into forward or reverse?

I finished mowing the lawn a couple weeks ago and throttled down... when I throttled down I heard a clunking sound as I was turning the motor off... as it finally turned off, I started it again to make sure everything was ok, but it no longer would go into forward or reverse... I don't know what model it is... It's about 5 years old, not a zero turn, doesn't have gears, just forward, reverse pedals and parking brake on the right side. Any help would be appreciated.
I checked the pull tab on the back, it's not that... belt isn't broken...hmmm....

Check the drive belt on the bottom. It is probably broken....

AR97317 New John Deere Tractor Flywheel w Ring Gear 4555 4560 4640 4650 4755 +
AR97317 New John Deere Tractor Flywheel w Ring Gear 4555 4560 4640 4650 4755 +
$1,108.00
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AH93577 New John Deere Idler Gear 1243 1290 1291 1293 243 244 343 344 40 443 +
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$89.00
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New John Deere Tractor 24 12V Conversion Kit w Gear Reduction Starter 3010 +
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L28664 New John Deere 2nd  6th Gear 1550 1750 1850 2040S 2130 2140 2155 2250 +
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T21976 New John Deere 2nd  6th Gear 300 300B 301 302 302A 310 380 400 401 410 +
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Vintage John Deere H Tractor Gear Shift Knob Part F292R Lot X 839
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John Deere 4000 4020 R45600 R33264 Reduction Gear 16t 1021
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John Deere 3010 3020 4000 4010 4020 4230 AR26389 Idler Gear w bushing 1023
John Deere 3010 3020 4000 4010 4020 4230 AR26389 Idler Gear w bushing 1023
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John Deere 2840 3020 3120 3130 3135 4000 4020 R33339 PTO Countershaft Gear 1025
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John Deere 3010 3020 4000 R32426 AR45952 Speed Hour Meter Gear
John Deere 3010 3020 4000 R32426 AR45952 Speed Hour Meter Gear
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New Gear Reduction OSGR Starter for John Deere Tractor 4250 4430 4450 ++
New Gear Reduction OSGR Starter for John Deere Tractor 4250 4430 4450 ++
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R71754 New John Deere Tractor 3rd Planetary Ring Gear 4555 4560 4650 4755 4760 +
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L100166 New John Deere Tractor Sun Gear 6100 6200
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John Deere Digital Display Gear Gauge Yz104940
John Deere Digital Display Gear Gauge Yz104940
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John Deere Starter Ring Gear R114282
John Deere Starter Ring Gear R114282
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JOHN DEERE 4020 DIFFERENTIAL GEAR RING  PINION R33062R AR33962 SYNCRO RANVGE
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H213514 Shaft Reverser Gear Box Fits John Deere9660STS9670STS9760STS
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H96149 SpacerShaft Vertical Auger Lower Gear Case Fits John DeereCTSCTS II
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NEW Planetary Gear For John Deere L100241
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M138279 John Deere 4500 4600 4610 4710 4320 4520 MFWD Front Drive Gear
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John Deere 1050 GEAR SN198233367 PNCH11940
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John Deere 1050 GEAR SN198233368 PNCH11939
$125.00
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John Deere 1050 DRIVE SHAFT GEAR SN198233374 PNCH11922
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Time Remaining: 1d 2h 13m
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Time Remaining: 1d 2h 23m
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John Deere 1050 COUNTERSHAFT W STEER GEAR SN198233378 PNCH13344
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John Deere  International ZF Axle Drive Gear L40028 81455C1
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CH11940 John Deere 850 950 1050 PTO Clutch Gear
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L113389 R235732 John Deere 5420 5425 5525 LH Final Drive Pinion Shaft Sun Gear
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$200.00
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R127520 John Deere 5420 5200 5400 5410 5220 5320 5520 Top Shaft Gear
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R127521 John Deere 5420 5200 5400 5410 5320 5520 Top Shaft Gear
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R127522 John Deere 5420 5200 5400 5210 5220 5320 5300 5300 5520 Top Shaft Gear
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$175.00
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John Deere  International ZF Axle Ring Gear L40043 81452C1
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RE188061 RE67668 60393 John Deere 5420 5320 5320 5520 MFWD Drop Gear Box
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John Deere B Shaft Pump Cover Pump Body Gears
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JOHN DEERE 4010 TRANSMISSION GEAR SHIFTERS R26196R R26195R AR26363 AR26364
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GEAR SHIFT KNOB JOHN DEERE TRACTORS
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2 NEW GEAR SHIFT BOOTS FOR JOHN DEERE TRACTORS
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Steering Shaft Worm Gear Bearing New John Deere B Allis Charmers Oliver JD 7396
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$30.00
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John Deere Late A and 60 camshaft and drive gear A3583R 298
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John Deere 60620630 Powershaft Idler Gear A4513R 299
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Time Remaining: 1d 13h 21m
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JOHN DEERE 620 60 FIRST REDUCTION GEAR A4484R 300
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Time Remaining: 1d 13h 23m
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JOHN DEERE 60 TRANSMISSION FOURTH  SIXTH SPEED PINION GEAR A4026R 301
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John Deere 60 620 630 4th and 6th Gear Shifter Arm A3748R  303
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John Deere 60 camshaft Lifters and Oil Pump Drive gear  304
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John Deere 70 Governor Assembly in great shape with fan gear  306
John Deere 70 Governor Assembly in great shape with fan gear 306
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John Deere 70 5th 6th sliding transmission gear F1370R 32 teeth 321
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John Deere 60 Governor Housing Complete with Gears and Weights 329
John Deere 60 Governor Housing Complete with Gears and Weights 329
$123.48
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John Deere Late Style B 50 Tractor Flywheel Ring Gear B2452R
John Deere Late Style B 50 Tractor Flywheel Ring Gear B2452R
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John Deere 4430 4440 Powershift Reduction Gear Shaft AR70725 R58437 RE55586
John Deere 4430 4440 Powershift Reduction Gear Shaft AR70725 R58437 RE55586
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John Deere 1020 1520 2020 2030 2440 2630 2640 PTO Drive Gear 31 teeth T30798
John Deere 1020 1520 2020 2030 2440 2630 2640 PTO Drive Gear 31 teeth T30798
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John Deere1020 1520 2020 2030 2440 2510 2640 Rear PTO Countershaft Gear R38214
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John Deere 2750 2950 OEM Injection Pump Gear R76964
John Deere 2750 2950 OEM Injection Pump Gear R76964
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John Deere 70 7031300 Up 730 720 Diesel Oil Slinger Gear with Bushing F2418R
John Deere 70 7031300 Up 730 720 Diesel Oil Slinger Gear with Bushing F2418R
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John Deere 3020 4020 PTO Drive Gear 540RPM 31 Teeth 16 Spline
John Deere 3020 4020 PTO Drive Gear 540RPM 31 Teeth 16 Spline
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John Deere 2130 2140 2630 2640 Countershaft Pinion Gear L28661
John Deere 2130 2140 2630 2640 Countershaft Pinion Gear L28661
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John Deere Tractor Parts Transaxle Gears Z30
John Deere Tractor Parts Transaxle Gears Z30
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John Deere Tractor Parts Transaxle Gears 2 Z15
John Deere Tractor Parts Transaxle Gears 2 Z15
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Peerless Transaxle Part from a John Deere Tractor Transaxle Gears Z25
Peerless Transaxle Part from a John Deere Tractor Transaxle Gears Z25
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T20298 John Deere 1520 2030 2520 2440 2640 2750 6200 7200 300B Oil Pump Gear
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NEW John Deere FUNK Planetary Gear Drive Assy Part  40271069
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$2,700.00
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JOHN DEERE A TRANSMISSION SLIDING GEAR SHAFT  A3114R
JOHN DEERE A TRANSMISSION SLIDING GEAR SHAFT A3114R
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NOS John Deere Part No T80370 Gear JD133
NOS John Deere Part No T80370 Gear JD133
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JOHN DEERE 3020 TRANSMISSION FIRST AND THIRD SPEED GEAR AR87813 R33501 R33501R
JOHN DEERE 3020 TRANSMISSION FIRST AND THIRD SPEED GEAR AR87813 R33501 R33501R
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