A Bobcat 751 is a handy little skid-steer for farm chores, grading driveways, and feeding hay, but once it starts leaking, creeping, or losing power, you need more than the operator's book. The service manual is what I pull out when I'm chasing hydraulic issues, wiring gremlins, or trying to torque something correctly on a Saturday night. It's written for people who actually turn wrenches and want to fix it once, not guess twice.
What this manual helps you do
- Diagnose hydraulic and hydrostatic drive problems, then check pressures and flows against the correct specs
- Trace electrical faults using proper wiring diagrams and step-by-step test procedures
- Follow teardown and reassembly steps on the engine, drive motors, and cylinders without guessing bolt order
- Adjust linkages, drive chains, and controls so the loader tracks straight and the Bob-Tach locks like it should
- Replace seals, hoses, and wear parts with the right sequences so you don't have to redo the job
Who this is for
This manual is for owners, small contractors, farm shops, and field techs working on a Bobcat 751 loader in the serial range 514911001 to 514999999. If you just want to know what the dash lights mean or how to run the machine, you want the operator's handbook instead.
FAQ
Q: Is this a searchable PDF and are the wiring diagrams readable?
A: Yes, these manuals are usually scanned or native PDFs you can search, and the wiring diagrams are clear enough to zoom in and follow circuits.
Q: Does it cover my exact 751?
A: If your serial number falls between 514911001 and 514999999, this is the right service manual for your machine.
Q: Is this the right document if I'm doing real repairs, not just maintenance?
A: Yes, this is the workshop-level service manual, meant for diagnostics, teardown, and repair, not basic daily checks.
Bottom line: If you have a Bobcat 751 in that serial range and you plan to wrench on it yourself, this is the manual you want. If your serial tag is outside that range, skip it.
📘 Show Index
Table of Contents:
- MAINTENANCE SAFETY
- ALPHABETICAL INDEX
- CONTENTS
- FOREWORD
- SAFETY INSTRUCTIONS
- SERIAL NUMBER LOCATIONS
- LOADER SERIAL NUMBER
- ENGINE SERIAL NUMBER
- DELIVERY REPORT
- BOBCAT LOADER IDENTIFICATION
- PREVENTIVE MAINTENANCE
- SERVICE SCHEDULE
- LIFTING AND BLOCKING THE LOADER
- TRANSPORTING THE LOADER
- TOWING THE LOADER
- STOPPING THE BOBCAT LOADER
- LIFTING THE LOADER
- Four Point Lift
- Single Point Lift
- LIFT ARM SUPPORT DEVICE
- Engaging The Lift Arm Support Device
- Disengaging The Lift Arm Support Device
- OPERATOR CAB
- Description
- Raising The Operator Cab
- Lowering The Operator Cab
- Emergency Exit
- SEAT BAR RESTRAINT SYSTEM
- Description (Foot Pedals)
- Seat Bar Inspection (Foot Pedals)
- Seat Bar Maintenance (Foot Pedals)
- Description (Hand Controls)
- Seat Bar Inspection (Hand Controls)
- Seat Bar Maintenance (Hand Controls)
- AIR CLEANER SERVICE
- FUEL SYSTEM
- Fuel Specifications
- Filling the Fuel Tank
- Fuel Filter
- Removing Air From The Fuel System
- ENGINE LUBRICATION SYSTEM
- Checking Engine Oil
- Replacing Oil and Filter
- ENGINE COOLING SYSTEM
- Cleaning the Cooling System
- Checking the Coolant Level
- Replacing The Coolant
- Propylene Glycol
- ALTERNATOR BELT
- Adjusting The Alternator Belt
- BOB–TACH
- FAN GEARBOX
- HYDRAULIC/HYDROSTATIC SYSTEM
- Checking And Adding Fluid
- Replacing Hydraulic/Hydrostatic Filter
- Replacing Hydraulic Fluid
- Hydraulic Reservoir Breather Cap
- SPARK ARRESTOR MUFFLER
- TIRE MAINTENANCE
- Wheel Nuts
- Tire Rotation
- Tire Mounting
- FINAL DRIVE TRANSMISSION (CHAINCASE)
- Checking and Adding Oil
- Removing Oil From the Chaincase
- DRIVE BELT
- Adjusting The Drive Belt Equipped With The Fixed Drive Idler
- Adjusting The Drive Belt Equipped With The Spring Loaded Drive Ider
- Drive Belt Replacement
- LUBRICATION OF THE BOBCAT LOADER
- PIVOT PINS
- REMOTE START SWITCH
- HYDRAULIC SYSTEM
- HYDRAULIC / HYDROSTATIC SCHEMATICS
- TROUBLESHOOTING
- HYDRAULIC SYSTEM INFORMATION
- Flare Connections
- O–ring Face Seal Connection
- Straight Thread O–ring Fitting
- Tubelines And Hoses
- LIFT CYLINDER(S)
- Checking The Lift Cylinder(s) For Internal Leakage
- Removal And Installation
- TILT CYLINDER
- Checking The Tilt Cylinder For Internal Leakage
- Removal And Installation
- Rod End Seal Replacement
- HYDRAULIC CYLINDER IDENTIFICATION
- Lift Cylinder Components
- Tilt Cylinder Components
- HYDRAULIC CYLINDERS
- BICS™ VALVE (S/N 514713000 & Above, S/N 514911453 & Above)
- Removal
- Lift Arm By–Pass Orifice
- Check Valve
- Lock Valve
- BICS™ Valve Solenoid
- Lock Valve
- Check Valve
- Lift Arm By–Pass Orifice
- Installation
- CONTROL VALVE (S/N 514713000 & Above, S/N 514911453 & Above)
- Removal And Installation
- Identification Chart
- Disassembly
- Lift Base End Restrictor Disassembly
- Load Check Valve Disassembly
- Main Relief Valve Disassembly
- Port Relief Valve Disassembly
- Anti–Cavitation Disassembly
- Rubber Boot Disassembly
- Lift Spool And Detent Disassembly
- Tilt Spool And Centering Spring Disassembly
- Auxiliary Spool Disassembly
- Auxiliary Electric Solenoid Disassembly
- Port–Auxiliary Section Disassembly
- Cleaning and Inspection
- Port–Auxiliary Section Assembly
- Auxiliary Electric Solenoid Assembly
- Auxiliary Spool Assembly
- Tilt Spool And Centering Spring Assembly
- Lift Spool And Detent Assembly
- Rubber Boot Assembly
- Anti–Cavitation/Port Relief Valve Assembly
- Port Relief Valve Assembly
- Main Relief Valve Assembly
- Load Check Valve Assembly
- Spool Seal Installation
- CONTROL VALVE (S/N 514712999 & Below, S/N 514911452 & Below)
- Removal And Installation
- Checking The Main Relief Valve
- Main Relief Valve Adjustment
- Main Relief Valve Removal and Installation
- Identification Chart
- Disassembly And Assembly
- Load Check Valve
- Main Relief Valve
- Port Relief Valve
- Anti–Cavitation Valve
- Rubber Boot
- Lift Spool Detent
- Tilt Centering Spring
- Auxiliary Spool
- Auxiliary Electric Solenoid
- Inspection
- Identification And Installation Of Spool Seal
- HYDRAULIC PUMP
- Removal And Installation
- Checking The Output Of The Hydraulic Pump
- Disassembly And Assembly
- Inspection
- Identification
- HYDRAULIC FILTER HOUSING
- HYDRAULIC FLUID RESERVOIR
- CONTROL PEDALS
- Removal And Installation
- Pedal Adjustment
- PEDAL INTERLOCK LINKAGE
- Removal And Installation
- Adjustment
- HYDROSTATIC SYSTEM
- TROUBLESHOOTING
- HYDROSTATIC SYSTEM INFORMATION
- Replenishing Valve Function
- Checking Charge Pressure
- CONTROL PANEL
- Rubber Boot Replacement
- Removal and Installation
- Steering Shaft Removal and Installation
- Steering Shaft Disassembly and Assembly
- Steering Lever Removal and Installation
- STEERING LINKAGE
- Removal and Installation
- Steering Linkage Adjustment
- Steering Neutral Adjustment
- HYDROSTATIC DRIVE MOTOR
- Removal And Installation
- Identification
- Disassembly And Assembly
- Inspection
- HYDROSTATIC PUMP
- Removal And Installation
- Identification
- Disassembly And Assembly
- Inspection
- Swashplate Pre–Load
- DRIVE BELT HOUSING
- SPRING LOADED DRIVE BELT TENSIONER PULLEY
- Removal And Installation
- Identification
- Disassembly
- Assembly
- FIXED DRIVE BELT TENSIONER PULLEY
- Removal And Installation
- Identification
- Disassembly
- Assembly
- Checking Pulley End Play
- OIL COOLER
- DRIVE SYSTEM
- PARKING BRAKE
- Removal And Installation
- Disassembly And Assembly
- PARKING BRAKE DISC
- TRACTION LOCK GUIDES
- CHAINCASE FLUID
- Removing Oil From The Chaincase
- CHAINCASE COVERS
- Center Chaincase Cover Removal And Installation
- Front Chaincase Cover Removal And Installation
- Rear Chaincase Cover Removal And Installation
- MOTOR CARRIER
- Shaft Seal Replacement
- Removal And Installation
- Disassembly
- Assembly
- AXLE SEAL
- AXLE, SPROCKET AND BEARINGS
- DRIVE CHAIN
- MAIN FRAME
- SEAT BAR (W/GAS CYLINDER)
- Removal And Installation
- Assembly
- Compressing The Gas Cylinder
- SEAT BAR (W/COMPRESSION SPRINGS)
- Removal And Installation
- Assembling Components
- Compression Spring Disassembly And Assembly
- OPERATOR CAB GAS CYLINDER
- Removal And Installation
- Disassembly And Assembly
- OPERATOR CAB
- OPERATOR SEAT
- BOB–TACH
- Removal And Installation
- Bob–Tach Lever And Wedge
- Bob–Tach Stops
- LIFT ARMS
- REAR GRILL
- FUEL TANK
- Removal And Installation
- Fuel Level Sender
- REAR DOOR
- Removal And Installation
- Hood Removal And Installation
- Bumper Removal And Installation
- Door Latch Removal And Installation
- Door Latch And Catch Adjustment
- ELECTRICAL SYSTEM
- ELECTRICAL SCHEMATICS
- TROUBLESHOOTING
- ELECTRICAL SYSTEM INFORMATION
- Description
- Fuse Location
- BATTERY
- Removal And Installation
- Servicing The Battery
- Using A Booster Battery (Jump Starting)
- ALTERNATOR
- Alternator Output Test
- Rectifier (Diode) Test
- Alternator Regulator Test
- Removal And Installation
- Adjusting The Alternator Belt
- Disassembly And Inspection
- Stator Continuity Test
- Stator Ground Test
- Rotor Continuity Test
- Rotor Ground Test
- Rectifier Continuity (Diode) Test
- Assembly
- STARTER
- Removal And Installation (228000–5210)
- Removal And Installation (228000–5740)
- Parts Identification (228000-5210)
- Disassembly (228000-5210)
- Inspection And Repair (228000-5210)
- No Load Test (228000-5210)
- Assembly (228000-5210)
- Parts Identification (228000-5740)
- Disassembly (228000–5740)
- Inspection And Repair (228000–5740)
- No Load Test (228000–5740)
- Assembly (228000–5740)
- STANDARD INSTRUMENT PANEL
- Removal And Installation
- FRONT LIGHTS
- RELAY SWITCHES
- Location
- Glow Plug Preheat Relay
- Glow System In Operator Cab
- Troubleshooting The Glow Plug System
- Testing The Glow Plug Timer Relay
- ENGINE SERVICE
- TROUBLESHOOTING
- ENGINE SPEED CONTROL
- Removal And Installation
- Disassembly
- RADIATOR
- ENGINE MUFFLER
- BLOWER HOUSING/FAN GEARBOX
- Removal And Installation
- Tension Pulley Removal And Installation
- Blower Fan Disassembly And Assembly
- FAN GEARBOX
- Disassembly
- Long Housing
- Short Housing
- Assembly
- Long Housing
- Short Housing
- Checking Backlash
- Identification
- AIR CLEANER
- ENGINE
- Removal And Installation
- Engine Mount Replacement
- FLYWHEEL
- Removal And Installation
- Flywheel Ring Gear
- INJECTION PUMP TIMING
- Checking Procedure
- Adjusting Injection Pump Timing
- Injection Pump Return Fitting
- Testing The Fuel Solenoid
- Idle Speed Setting
- TIMING BELT
- FUEL INJECTION PUMP
- FUEL INJECTOR NOZZLE
- Removal And Installation
- Checking The Injector Nozzle
- CYLINDER LOCATION & COMPRESSION
- GLOW PLUGS
- Removal And Installation
- Checking The Glow Plugs
- CYLINDER HEAD
- Removing The Cylinder Head
- Disassembly Of The Cylinder Head
- Removing The Combustion Chamber
- Removing The Heat Shield
- Installing The Heat Shield
- Servicing The Cylinder Head
- Checking The Valves
- Checking The Valve Springs
- Checking The Valve Guides
- Checking The Valve Seats
- Checking The Combustion Chamber
- Reassembly Of The Cylinder Head
- Installing The Cylinder Head
- ENGINE BLOCK
- Disassembly Of The Engine
- Assembly Of The Engine
- PISTONS AND CONNECTING RODS
- Disassembly And Assembly
- Checking The Piston
- Checking The Crankshaft
- CRANKSHAFT PULLEY
- POSITIVE CRANKCASE VENTILATION VALVE
- PEUGEOT ENGINE TOOL KIT MEL1474 (Complete Kit)
- PEUGEOT ENGINE
- SYSTEMS ANALYSIS
- BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)
- Inspecting The BICS Controller (Engine STOPPED –Key ON)
- Inspecting DeactivationOf The Auxiliary Hydraulics System (Engine STOPPED–Key ON)
- Inspecting The Seat And Seat Bar Sensors (EngineRUNNING)
- Inspecting The Traction Lock (Engine RUNNING)
- Inspecting The Lift Arm By–Pass Control
- Maintenance
- Troubleshooting Chart
- Troubleshoot Guide
- BICS CONTROLLER
- TRACTION LOCK
- SEAT SENSOR
- SEAT BAR SENSOR
- LIFT LOCK BY–PASS VALVE
- BICS™ SYSTEM CONTROLLER
- Removal And Installation
- Controller Test
- SEAT BAR SENSOR
- Removal And Installation
- Seat Bar Sensor Test
- SEAT SENSOR
- Removal And Installation
- Seat Sensor Test
- TRACTION LOCK
- LIFT LOCK BY–PASS VALVE
- Removal And Installation (S/N 514712999 & Below,S/N 514911452 & Below)
- Disassembly and Assembly (S/N 514712999 & Below, S/N 514911452 & Below)
- Removal And Installation (S/N 514713000 & Above, S/N 514911453 & Above)
- Disassembly And Assembly (S/N 514713000 & Above, S/N 514911453 & Above)
- TILT LOCK VALVE
- Removal And Installation (S/N 514712999 & Below, S/N 514911452 & Below)
- Disassembly And Assembly (S/N 514712999 & Below, S/N 514911452 & Below)
- SPECIFICATIONS
- SKID STEER LOADER SPECIFICATIONS
- PERFORMANCE
- CONTROLS
- ENGINE
- HYDRAULIC SYSTEM
- ELECTRICAL
- DRIVE SYSTEM
- CAPACITIES
- TIRES
- FLOOR PRESSURE
- VIBRATION DATA
- ENGINE SPECIFICATIONS
- Fuel Injection Nozzles
- Fuel Injection Pump
- Cylinder Head
- Valves
- Valve Springs
- Valve Guides
- Combustion Chamber
- Cylinders
- Piston Rings
- Pistons
- Connecting Rod
- Crankshaft
- TORQUE SPECIFICATIONS FOR LOADER
- HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
- STANDARD TORQUE SPECIFICATIONS FOR BOLTS
- DECIMAL AND MILLIMETER EQUIVALENTS
- U.S. TO METRIC CONVERSION
- SERVICE MANUAL REVISIONS
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