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....

R42444 New John Deere Pinion Gear 4000 4010 4020 4040 4230 4240 4320 4430 4440 +
R42444 New John Deere Pinion Gear 4000 4010 4020 4040 4230 4240 4320 4430 4440 +
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JOHN DEERE AR35004 IDLER TIMING GEAR MARKED R35016 USED GOOD CONDITION
JOHN DEERE AR35004 IDLER TIMING GEAR MARKED R35016 USED GOOD CONDITION
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A3323R John Deere Flywheel Ring Gear A AO AR 60
A3323R John Deere Flywheel Ring Gear A AO AR 60
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JOHN DEERE R35045 CRANK GEAR GOOD USED CONDITION
JOHN DEERE R35045 CRANK GEAR GOOD USED CONDITION
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John Deere B A D G H M MT R L LA Tractor Oil Pump Gears
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McCormick Deering Farmall F12 F14 F20 F30 23897 D Gear Shaft
McCormick Deering Farmall F12 F14 F20 F30 23897 D Gear Shaft
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McCormick Deering Farmall F12 F14 F20 F30 23897 D Gear
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McCormick Deering Farmall F12 F14 F20 F30 Axle Shaft Gear 23827D
McCormick Deering Farmall F12 F14 F20 F30 Axle Shaft Gear 23827D
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McCormick Deering Farmall F12 F14 F20 F30 Ring Gear New Departure ENDEE 3213
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L39994 New John Deere Tractor Sun Gear 2140 2141 2541 2750 2941 2950 2955 3040 +
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L40010 New John Deere Tractor Planetary Ring Gear 2120 2141 2541 2750 2941 +
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AR49503 R46999 John Deere 4320 4520 4620 7020 Camshaft Gear
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M808363 John Deere 4500 4510 4600 4610 4700 4710 Countershaft Gear
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M808438 John Deere 4500 4600 4700 4320 4520 4720 Countershaft Gear
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M808525 John Deere 4500 4510 4600 4610 4700 4710 990 Countershaft Gear
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M808530 John Deere 4500 4600 4610 4700 4710 4320 4520 4720 Countershaft Gear
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M808439 John Deere 4500 4600 4700 4120 4320 4520 4720 Final Drive Gear
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M808529 John Deere 4500 4600 4700 4120 4320 4520 990 Transmission Shift Gear
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JOHN DEERE R35354 INJECTION PUMP TIMING GEAR GOOD USED CONDITION
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$100.00
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JOHN DEERE H TRANSMISSION REVERSE  LOW GEAR SHIFTER AH875R
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JOHN DEERE 820 TRACTOR INJECTION PUMP TIMING GEAR AND FUEL LINES
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John Deere MFWD Drive Gear L155995 or L115439 Tooth s 44  23 Ratio 1990 2028
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JD John Deere Timing Gear Cover AR69984 500C 3010 3020 510 500A 500B 4020 Many
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NEW John Deere H 75192 H75192 Countershaft Shaft Gear for 6600 7700 Combine
NEW John Deere H 75192 H75192 Countershaft Shaft Gear for 6600 7700 Combine
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JOHN DEERE OEM TRACTOR GEAR REAR PTO  LVU800819 MSRP 11995 SAVE SOME GREEN
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JOHN DEERE 4020 4010 3020 3010 TIMING GEAR COVER AR69984 AR31934 AR44390
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John Deere 466 Engine Camshaft and Gear
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John Deere 2640 2955 4400 Combine Helical Camshaft Gear 48 Teeth T20070
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John Deere A AO AR Powershaft Cover Shaft Drive Gear Cover A565R
John Deere A AO AR Powershaft Cover Shaft Drive Gear Cover A565R
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John Deere 2030 2640 PTO Clutch Drum Gear Piston Rings AR65083 T30794 L28655
John Deere 2030 2640 PTO Clutch Drum Gear Piston Rings AR65083 T30794 L28655
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John Deere 1020 1520 2020 2630 2940 4030 4050 and more Upper Idler Gear T20029
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John Deere 70 7031300 Up 730 720 Diesel Oil Slinger Gear with Bushing F2418R
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Time Remaining: 1d 36m

John Deere 1020 1520 2020 2030 2440 2630 2640 PTO Drive Gear 31 teeth T30798
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John Deere 2440 2630 2640 Transmission Drive Gear 12 and 13 teeth R67339
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John Deere 3020 4020 PTO Drive Gear 540RPM 31 Teeth 16 Spline
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John Deere 4430 4440 Powershift Reduction Gear Shaft AR70725 R58437 RE55586
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John Deere Gear Case AA57397
John Deere Gear Case AA57397
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NEW Planetary Gear for John Deere Tractor 1850 1950 2250 2450 2650
NEW Planetary Gear for John Deere Tractor 1850 1950 2250 2450 2650
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John Deere 420 430 1010 2nd  Reverse Sliding Gear M4209T
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NEW Planetary Ring Gear for John Deere Tractor 3351 2541 2941 3641 3651
NEW Planetary Ring Gear for John Deere Tractor 3351 2541 2941 3641 3651
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JOHN DEERE AR54963 DRIVE SHAFT WITH GEAR AND BEARING STAMPED R50861 GOOD USED
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John Deere RE509865 Timing Gear Cover  Water Pump
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John Deere Part L113016 Gear NEW
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NEW Planetary Ring Gear for John Deere Tractor 2955 3155 3055 3255 2141 3141
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R54950 John Deere 2440 2640 2630 Power Shaft Clutch Drive Gear
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NEW Planetary Ring Gear for John Deere Tractor 3040 3140 2750 2950 3640 3150
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NEW Planetary Ring Gear for John Deere Tractor 344H LOADER 304H LOADER 2120
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CH13383 John Deere 1050 Left Hand Rear Axle Final Drive Gear
CH13383 John Deere 1050 Left Hand Rear Axle Final Drive Gear
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JOHN DEERE 2520 SHIFT COLLORS COLLARS + GEARS
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JOHN DEERE 3020 TRANSMISSION FIRST AND THIRD SPEED GEAR AR87813 R33501 R33501R
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JOHN DEERE 3020 TRANSMISSION PINION GEAR R26990
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John Deere 720 730 1st 3rd Slow Speed Gear F2609R
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John Deere 520 530 Camshaft Distributor Drive Gear B3957R
John Deere 520 530 Camshaft Distributor Drive Gear B3957R
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NEW Deere Minneapolis Massey Tractor Gear Shift Boot 820 830 1020 1520 1530 2020
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John Deere 3010 Transmission Gear 4th 7ht R26990
John Deere 3010 Transmission Gear 4th 7ht R26990
$100.00
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A AR AO JOHN DEERE BRAKE SHAFT GEAR PINION A1162R AA5489R
A AR AO JOHN DEERE BRAKE SHAFT GEAR PINION A1162R AA5489R
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John Deere Model A first reduction gear off 1948 model A
John Deere Model A first reduction gear off 1948 model A
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L LA JOHN DEERE TRACTOR MODEL X GEAR DRIVE MAGNETO GAS MOTOR JD LA L
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John Deere NOS Final Drive Pinion Gear Model MMCMT40320 30420 30 Tractors
John Deere NOS Final Drive Pinion Gear Model MMCMT40320 30420 30 Tractors
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Reverser Gearbox Output Gear For John Deere Combines
Reverser Gearbox Output Gear For John Deere Combines
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Power Shift Pack Oil Pump Gear John Deere 4630 4640 4850 RE82364
Power Shift Pack Oil Pump Gear John Deere 4630 4640 4850 RE82364
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Planetary Gear New John Deere H168994
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Countershaft Idler Gear For John Deere Tractors
Countershaft Idler Gear For John Deere Tractors
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Planetary Gear For John Deere Tractors
Planetary Gear For John Deere Tractors
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Straw Spreader Gear New John Deere H91796
Straw Spreader Gear New John Deere H91796
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Idler Gear For John Deere Corn Heads
Idler Gear For John Deere Corn Heads
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Gatherer Drive Gear Assembly For John Deere Corn Heads
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Vertical Auger Lower Gear Case Sprocket New John Deere AH146352
Vertical Auger Lower Gear Case Sprocket New John Deere AH146352
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Cylinder Input Gear New John Deere H113063
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Crankshaft Gear New John Deere T20094
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Pinion Gear John Deere 4040 4050 4230 4240 4430 R56732
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Camshaft Gear For John Deere
Camshaft Gear For John Deere
$100.00
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PTO Gear John Deere 1010 2010 T13512
PTO Gear John Deere 1010 2010 T13512
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Gear Shift Ball John Deere 50 60 520 530 620 630 720 730 A B H H717R
Gear Shift Ball John Deere 50 60 520 530 620 630 720 730 A B H H717R
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Gear Shift Ball John Deere G H F288R
Gear Shift Ball John Deere G H F288R
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