GP) John Deere XUV 625I

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Powerful gas engine delivers superb starting, idling, and throttle response

  • 617-cm<sup>3</sup> gasoline engine

    617-cm3 gasoline engine

  • Optional speed limiter

    Optional speed limiter

The XUV 625i is powered by a 617-cm3, twin-cylinder, liquid-cooled, four-cycle gasoline engine. It produces 4.5 kgm of torque (32.9 lb-ft) at 2100 rpm. The advanced electronic fuel injection delivers superb starting, idling, and throttle response during operation.

The engine offers the following performance and reliability features:

  • Electronic fuel injection for superb performance, altitude adjustment, and cold-weather starting (tested to -28°C/-20°F)
  • 22.5 hp* at 2100 rpm
  • Electronic ignition is continuously variable for optimum engine power and provides fast, reliable starts
  • Exclusive electronic ground-speed governor and throttle body
    • Auto compensates by providing more power when going up a hill or through difficult terrain
    • Eliminates top-speed degradation from belt wear
  • Overhead valve design provides greater efficiency and fuel economy
  • Full-pressure lubrication system
  • Spin-on oil filter with drain bracket and oil drain valve enable easy servicing
  • Dry replaceable single-element air cleaner with remote intake
  • See-through coolant recovery tank permits the operator to check the coolant level without having to remove the radiator cap
    • Sealed radiator compartment keeps trash and debris on the outside of the grille
  • Optional speed-limiter kit allows full power and acceleration with keyed lockout to limit the top speed to 20 mph

Additional detail on the electronic governor and throttle body

  • The electronic governor system allows the electronic control unit (ECU) to continuously monitor the throttle opening and engine speed, electronically regulating the throttle opening to maintain a constant engine speed, even under changing engine-load conditions
  • Electronic throttle control (ETC) is an electronic link between the accelerator pedal and the throttle; the ECU determines the required throttle position through other sensors; the system provides input to the fuel injection system
    • Benefits of ETC are consistent powertrain characteristics, regardless of engine temperature, altitude, accessory loads, etc.; ETC also dramatically improves the ease with which the driver can execute gear changes and deal with the dramatic torque changes associated with rapid accelerations and decelerations

* The engine horsepower information is provided by the engine manufacturer to be used for comparison purposes only. The actual operating horsepower will be less.

Superior terrain capability

The Gator™ XUV Crossover Series Utility Vehicle has a precision-engineered drivetrain system that fully utilizes engine power, optimizing acceleration, hauling, towing, and hill-climbing capabilities. Power is transmitted from the engine through a continuously variable clutch system to the transaxle.

 

Key elements of the drive system include:

Variable-speed drive

Variable-speed drive

The variable-speed drive consists of two clutches and a drive belt:

  • Drive clutch is attached to the engine.
  • Driven clutch is attached to the transaxle.

Features include:

  • The Continuously Variable Transmission (CVT™) air intake draws in 50 percent more air vs. previous designs to reduce heat and the amount of water ingestion into the CVT system. The system will reduce belt slipping and improve durability.
  • A low- and high-speed forward gear offering:
    • Low range is 0 km/h to 27 km/h (0 mph to 17 mph), 625i
    • Low range is 0 km/h to 27 km/h (0 mph to 17 mph), 825i
    • Low range is 0 km/h to 24 km/h (0 mph to 15 mph), 855D
    • High range is 0 km/h to 48 km/h (0 mph to 30 mph), 625i
    • High range is 0 km/h to 71 km/h (0 mph to 44 mph), 825i
    • High range is 0 km/h to 51 km/h (0 mph to 32 mph), 855D
  • Ability to creep along slowly to maneuver in tight spaces
  • Standard full clutch enclosure with high speed fan provides longer belt and clutch life
  • High-ratio clutches with four cam weights for maximum belt clap load in high torque conditions
  • Powertrain reduction ratios:
    • The complete reduction ratios range for high gear is (8.6:1 at top speed and 42:1 at initial clutch engagement
    • The complete reduction ratios range for low gear is (17.9:1 at top speed and 86.8:1 at initial clutch engagement

NOTE: Delivery and torque to the ground depends on tire size which is a function of nominal size and pressure.

 

How the variable-speed drive works:

  1. As engine speed increases, the spring-loaded drive clutch is closed by weights being forced out by centrifugal force.
  2. As the drive clutch closes, the belt rides up to the largest diameter of the drive clutch and forces open the driven clutch.
  3. With the belt running in the smallest diameter of the driven clutch, the speed being transferred to the transaxle is increased.
  4. The driven clutch is designed to sense varying loads (inclines, mud, etc.) and constantly adjusts drive speed upward or downward so that engine rpm remains optimal.

Transaxle, MFWD, and CV shafts

  • Top view of engine (XUV 620i shown)

    Top view of engine (XUV 620i shown)

  • Side view of CVT intake and clutch on closure (XUV 855D shown)

    Side view of CVT intake and clutch on closure (XUV 855D shown)

  • Front differential rocker switch

    Front differential rocker switch

  • Rear end shot of transaxle/CV shafts (XUV 625i)

    Rear end shot of transaxle/CV shafts (XUV 625i)

  • Operator interface
    • On-demand true 4WD system with an auto-locking front differential and dash-mounted electronic rocker switch is best-in-class; when the rocker switch is in the on (4WD) position, the front differential will automatically lock for extra traction when needed, but when the rocker switch is in the off (2WD) position, the vehicle will remain in 2WD
      • Provides exceptional traction in challenging conditions
      • Maintains turf-friendly operation in 2WD mode
  • Transaxle
    • Two-speed fully enclosed oil bath transaxle allows for superior pulling ability
    • Cast aluminum design is the most robust in the industry
    • Helical forward and reverse gears are used for quiet operation
    • Rear traction assist (differential lock) is built in and can be engaged on demand
      • Allows locking the rear drive wheels together
      • Provides increased traction in tough spots
      • NOTE: Differential design reduces scuffing of the turf during turns because it allows the inside wheels to turn slower than the outside wheels
    • Neutral start safety interlock for engine ignition system
    • Large, sealed bearings are located inside the housing for better protection and durability
    • Contains gear case for transferring power to the MFWD
    • Splined shaft interfaces for maximum torque transfer and durability
    • All drive gears machined from highest grade gear steel
    • Protected by a skid plate
  • Mechanical front-wheel drive
    • Electromagnetic design is auto-locking for ease of use
      • Performs like a locking differential when engaged, but like an open differential when cornering
      • Offers positive engagement of both front wheels in forward and reverse as a differential package
      • Automatic engagement on the fly—no shift linkages required
    • Protected by a skid plate and frame
  • Drive shafts
    • Rear CV shaft diameter measures 27 mm (1.1 in.) and designed for peak engine and braking torque
    • Front CV shaft diameter measures 23.9 mm (0.94 in.) and designed for peak engine torque
      Propshaft (transaxle to MFWD shaft) diameter measures 23 mm (0.91 in.) and designed for peak engine torque
    • All CV Shaft and propshaft joints are maintenance free and protected by exclusive Neoprene boots for durability

    • To complement the most capable frame available in a high-performance utility vehicle, the XUV is equipped with four-wheel independent suspension.

       

      A dual A-arm front and rear suspension provides a smooth ride over challenging terrain and excellent hauling characteristics.

       

      The entire suspension system has been optimized to handle no cargo to maximum cargo without compromising ride quality or vehicle stability.

      Dual A-arm front suspension features include:

      • 203.2 mm (8 in.) of travel provides ample compression and wheel extension, which keep all four wheels on the ground for superior traction and vehicle control
      • 17.5-mm (0.6875-in.) solid anti-roll bar with fully rubber isolated connecting links and pivots for minimal vehicle body roll and quiet operation
      • Heavy-duty nodular cast-iron knuckles to support the strut, CV shaft, and wheel
      • Maintenance-free rubber torsional A-arm pivots for long life and quiet operation
      • CV shaft protection from sticks that may puncture the rubber boot