Specifications, Service and Repair of Farm and Lawn Tractors

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Cub Cadet 680 Hydro Technical Specifications

General Information

Tractor Model ...................... Cub Cadet 680 Hydro
Tractor Type ...................... Garden tractor
Manufacture Years ...................... 1982-1984
Fuel Type ...................... Gasoline
Attachments ...................... Mower Deck

Cub Cadet 680 Engine Specs

Engine Model ...................... Kohler K301
Engine Type ...................... 4-stroke, air-cooled gasoline
Number of Cylinders ...................... Single
Displacement, cu in (L) ...................... 29.1 (0.476)
Engine Bore, in (mm) ...................... 3.39 (86.0)
Engine Stroke, in (mm) ...................... 3.25 (83.0)
Maximum Engine Power, hp (kW) ...................... 12.0 (8.9)
Rated Engine Speed, rpm ...................... 3600
Compression ...................... 6.0:1
Fuel System ...................... Carburetor
Carburetor Model ...................... Kohler/Walbro
Carburetor Type ...................... Fixed main jet or adjustable main jet
Lubrication System ...................... Splash type
Cooling System ...................... Forced-air
Ignition System ...................... Magneto or battery
Valve Clearance (Intake), in (mm) ...................... 0.008-0.010 (0.20-0.25)
Valve Clearance (Exhaust), in (mm) ...................... 0.017-0.019 (0.43-0.48)
Spark Plug Type ...................... Champion RH10
Spark Plug Size, in (mm) ...................... 0.553 (14.0)
Spark Plug Gap, in (mm) ...................... 0.026 (0.65)
Fuel Tank Capacity, gal (L) ...................... 4.0 (15.2)
Oil Capacity, qts (L) ...................... 2.2 (2.1)

Cub Cadet 680 Electrical System

Electrical System Rating, Volts ...................... 12
Charging System ...................... Generator, 15A
Starter Type ...................... Recoil
Number of Batteries ...................... 1
Battery Voltage, Volts ...................... 12
Electric Ground ...................... Negative

Power Take-Off

PTO Location ...................... Front
Front PTO Operational Type ...................... Independent
Front PTO Clutch ...................... Electric
Front PTO Speed, rpm ...................... 3600

Cub Cadet 680 Hydro Transmission

Transmission Type ...................... Shaft driven hydrostatic
Transmission Model ...................... Sundstrand
Forward/Reverse Gears ...................... Infinite
Oil Capacity, qts (L) ...................... 7.0 (6.6)
Maximum Forward Speed, mph (kph) ...................... 8.0 (12.9)
Maximum Reverse Speed, mph (kph) ...................... 4.0 (6.4)

Wheels and Tires

Drive Wheels ...................... 2WD 4x2
Steering Configuration ...................... Front steer
Steering System ...................... Manual
Brakes Type ...................... Mechanical disc
Front Tire Size ...................... 16x6.5-8
Rear Tire Size ...................... 23x10.5-12
Front Tread Width, in (mm) ...................... 29 (730)
Rear Tread Width, in (mm) ...................... 27 (680)

Cub Cadet 680 Dimensions and Weight

Wheelbase, in (mm) ...................... 44 (1110)
Length, in (mm) ...................... 72 (1820)
Height, in (mm) ...................... 43 (1090)
Overall Width, in (mm) ...................... 37.3 (945)
Ground Clearance, in (mm) ...................... 6 (152)
Turning Radius, in (mm) ...................... 81.6 (2065)
Weight, lb (kg) ...................... 660 (300)

Cub Cadet 680 Attachments

38" Mower Deck

Mower Deck Model ...................... 38C
Mower Deck Type ...................... Mid-mount
Number of Blades ...................... 3
Cutting Width, in (mm) ...................... 38 (960)
Cutting Height, in (mm) ...................... 1-4 (20-100)
Lift System ...................... Mechanical

44" Mower Deck

Mower Deck Model ...................... 44C
Mower Deck Type ...................... Mid-mount
Number of Blades ...................... 3
Cutting Width, in (mm) ...................... 44 (1110)
Cutting Height, in (mm) ...................... 1-4 (20-100)
Lift System ...................... Mechanical

50" Mower Deck

Mower Deck Model ...................... 50C
Mower Deck Type ...................... Mid-mount
Number of Blades ...................... 3
Cutting Width, in (mm) ...................... 50 (1265)
Cutting Height, in (mm) ...................... 1-4 (20-100)
Lift System ...................... Mechanical

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CUB CADET TRACTORS SPECIFICATIONS

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ENGINES FOR CUB CADET LAWN TRACTORS

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CUB CADET TRACTORS TROUBLESHOOTING
1050 1863 2166 2182 2186
3184 3205 GT1554 GT2550 GTX2100
LT1040 LT1042 LT1045 LT1046 LT1050
LT2180 LTX1040 LTX1042 LTX1045 LTX1046
LTX1050 SLTX1054 XT1 LT42 XT1 LT46 XT3 GSX