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Rover 5377 - 12HP Owner's Manual

Auto-drive 12hp mower
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Ranger Auto - Drive
Owners Manual
Model No. 5377 – 12HP.
WARNING
A mower is a high speed cutting tool. Safety precautions must be observed to reduce the risk of accident.
Careless or improper use may cause serious injury.
Be sure that you read and fully understand the contents of this Owner's Manual. Should any point be unclear, contact
Rover-Scott Bonnar Limited, in your State or an authorised Rover-Scott Bonnar Service Agent for assistance.
Keep the Owner's Manual in a safe place for future reference. Read the Owner's Manual periodically to ensure the
continued safe and proper use of the mower.

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Summary of Contents for Rover 5377 - 12HP

  • Page 1 Be sure that you read and fully understand the contents of this Owner’s Manual. Should any point be unclear, contact Rover-Scott Bonnar Limited, in your State or an authorised Rover-Scott Bonnar Service Agent for assistance. Keep the Owner’s Manual in a safe place for future reference. Read the Owner’s Manual periodically to ensure the...

  • Page 2: Safety Instructions

    Do not mow in reverse. When reversing keep a careful and continuous observation of the entire area behind the mower. Never use the mower unless all guards provided by Rover- Scott Bonnar Limited are in position. Never disconnect the safety switches and never operate the mower if any safety switch is inoperative.

  • Page 3: Safety Features

    SAFETY FEATURES Traction drive, blade drive and seat safety interlock Enclosed drives Full footrests Low centre of gravity, stable wide track Parking brake Convenient – easy to operate controls...

  • Page 4: Specifications

    ROVER RANGER Machine Model No. 5377 Engine Model No. 281707 Single Cylinder Briggs & Stratton 4 Stroke 12Hp 465cc Fuel Capacity 4.0 Litres Oil Capacity 1.42 Litres Lubrication Gear Impellor Spark Plug type Champion CJ8 Spark Plug gap 0.7 to 0.8mm...

  • Page 5: Loose Parts Kit

    DESCRIPTION Steering wheel Roll Pin Stone Guard Assy. Spring Stone Guard ‘E’ Clip Ignition Keys Plug Spanner SETTING UP INSTRUCTIONS Fig. 2 INSTALL STEERING WHEEL 1. Slip steering wheel over steering shaft and align the wheel hole with the shaft hole; 2.

  • Page 6: Before Operating

    FILL CRANKCASE WITH OIL The rider mower may be delivered without oil in the crankcase. Oil must be added before attempting to start the engine. 1. Place machine on level surface. Ensure that the oil plug is securely tightened. Clean around dipstick.

  • Page 7: Operating Instructions

    Before working on the mower, disconnect the spark plug lead from the spark plug and place it where it cannot contact the spark plug. Check your Rover Ranger frequently for loose nuts, bolts, belts etc, and keep these items correctly tightened and adjusted.

  • Page 8: Maintenance Interval Chart

    Change Oil (Initial) Change Oil (Periodic) Check Interlock Check Cutting Blades Check Cutting Unit Brake Check Rear Wheels Brake Lubricate Pivot Points Lubricate Drive Chain Lubricate Throttle Cable Grease Front Axle Spindles Service Air Cleaner Check Spark Plug Check Drive Belts Check Drive Chain Check Tyre Pressure Clean Outside of Engine...

  • Page 9: Maintenance

    COOLING SYSTEM The Ranger has an air cooled 4 stroke engine. It must be cleaned frequently. Remove any build-up of grass, dirt or other debris from the - Cylinder; Cylinder head cooling fins; Cooling air intake screen and; Carburetor governor levers and linkages. This will ensure adequate cooling and correct engine speed.

  • Page 10: Wheel Removal

    Cutter Drive Lever Pivot; Clutch/brake pedal pivot; See Fig.15 Tie rod ball ends; Fig.11 All connecting rod pivot points. NOTE : All ball bearings are sealed and require no maintenance. CUTTING UNIT Remove spark plug lead and disengage cutter drive before working on cutter unit, to prevent accidental starting of the engine.
  • Page 11 PARKING BRAKE Should always be checked for operation after clutch/brake rods have been adjusted. CUTTER DRIVE ADJUSTMENT Move Cutter Height Selector Lever to No.4 Position in Rack Move Cutter Drive Lever to the Engaged Position Adjust Push Rods Fig.16 to give a spring compression of 30mm, Fig.17.

  • Page 12: Drive Chain Adjustments

    AUTO DRIVE The Auto-Drive friction plates and drive pulleys are factory set for travel required along key shaft and this should not need adjusting. If during operation it is found that the relationship between forward and reverse has become unbalanced adjust as follows:- Loosen locknut (A) Fig.22 Centralise engagement lever (D) with friction plates...

  • Page 13: Removal From Storage

    STEERING RODS Should not normally require resetting. Loosen rod lock nut; (A) See Fig.11 Release the fixing bolt; Turn tie rod end to adjust for length clockwise to shorten, anti-clockwise to lengthen Replace the fixing bolt and tighten; Tighten rod lock nut; Make sure rod is free to pivot.

  • Page 14: Safety And Instruction Decals

    SAFETY AND INSTRUCTION DECALS Safety and Instruction decals are mounted on the RANGER Rear Engine Rider. Replace any that become damaged or illegible.
  • Page 15 ITEM DESCRIPTION PART No. KEY SWITCH A07678 A07679 BLADE SWITCH A06406 BRAKE SWTICH A06406 SOLENOID A07107 BATTERY A05262 FUSE A07513 POWER LEAD A12277 EARTH LEAD A12278 EARTH STRAP A12020 WIRING LOOM A10274 SEAT SWITCH A10257 SEAT PANEL SW. A06406 RESISTANCE LEAD A12283...

  • Page 16: Troubleshooting

    PROBLEM POSSIBLE CAUSES Engine loses power 1. Oil level in crankcase in low 2. Cooling fins and air passages under engine 3. Engine load is excessive 4. Air cleaner is dirty 5. Dirt or water is in fuel system 6. Carburetor is adjusted incorrectly 7.
  • Page 17 ITEM PART No. * COMMON HARDWARE ITEM A07937 Fuel Tank A12005 Fuel Tank Cap A07999 Fuel Tank Bracket A12001 Fuel Tank Strap – Front A12002 Fuel Tank Strap – Rear A12009 Fuel Line – ¼ ID A12010 Hose Clamp A12011 Fuel Line Retainer ½”...
  • Page 19 ITEM PART No. * COMMON HARDWARE ITEM A10260 Chassis Assembly A10041 Height Selector Shaft Assembly A10280 Cutterhead Engage. Selector Assembly A10248 Drive Selector Pedal Assembly A00980 Cutterhead Selector Arm Assembly A10250 Pedal Arm Assembly A10243 Pedal Assembly A10276 Front Bumper Bar Assembly A10265 Engagement Shaft Assembly A10273...
  • Page 21 ITEM PART No. * COMMON HARDWARE ITEM A07691 Steering Wheel A10212 Steering Shaft Assembly A10269 Layshaft Assembly A07092 Self-Lube Bush A07948 Retaining Washer A02289 Circlip A07953 Steering Gear Mount Block A12282 Tie Rod A07150 Tie Rod End A07634 Tie Rod A10270 Steering Block Assembly A10225...
  • Page 23 ITEM PART No. DESCRIPTION *COMMON HARDWARE ITEM A12042 Drive Plate A12063 Friction Disc A12041 Friction Plate A12037 Drive Shaft A12088 Bearing Clamp A12276 Clip A12110 Shim A07744 Bearing 1502520 Circlip A12209 Sprocket A06351 Chain-Primary A02051 Woodruff Key A12064 Bearing A12112 Bearing Flangette A12202 Belt...
  • Page 25 Speed Nut – 3/16” BSW Poprivet – 73AS 5-5 Poprivet – 73SS 5-5 A06479 Decal – Height Adjustment A12253 Decal – Cutter Drive A03409 Decal – Rover A12279 Brace A12280 Decal Patent Pending A07902 Seat Switch Plate Setscrew – 5/16” x ¾” UNC. Hex...
  • Page 27 ITEM PART No. * COMMON HARDWARE ITEM A10222 Cutterhead Assembly A07195 Spindle Washer A07993 Pulley A12268 V-Belt A07730 Spindle Housing A07755 Swivel Block A07744 Bearing A06359 Cutterhead Spindle A01374 Felt Washer A02304 Spacer Boss A00987 Cutterhead Chute Assembly A07752 Spring Cutterhead Chute A07732 U-Bolt Cutterhead A07733...
  • Page 28 Date of Purchase………………………………….. Model…………………………………………………… Serial No………………………………………………. Rover-Scott Bonnar Limited reserves the right to make changes of and add improvements upon its product at any time without notice or obligation. The Company also reserves the right to discontinue manufacture of any product at its discretion at any time.

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