All 93 pages of the Yanmar S165R-1 / 4TNV98C-NMS2 Parts Catalog (OEM #0CK50-M00570EN) map every replaceable component on your skid-steer loader, from chassis frame hardware to the full hydrostatic drive assembly. Inside, you get exploded views organized by system: chassis and wheel drives, the 4TNV98C-NMS2 engine with intake and cooling, ROPS/FOPS cab components, electrical assemblies from fuses to ROPS wiring harness, and a substantial hydraulics section covering tandem pump configurations, one-speed and two-speed drive motors, lift and tilt cylinders, and control valves for both hand-foot and joystick setups. Every exploded view carries OEM part numbers so you can order the right part on the first call. Take the quick attach cylinder: it breaks down to rod, piston, head gland, and seal kit at the component level. No more ordering wrong parts. Bookmarked by system; pull it up on your phone, find the component, and place the order.
What's Inside This Yanmar S165R-1 (4TNV98C-NMS2) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Reference Materials | 2 | - |
| Chassis | 5 | Fuel Sender Gasket, Hydraulic Reservoir Cap, Sight Port, Clean-Out Cover, Filler Plate Seal, Fuel Cap, Drain Cover, ROPS Filler Rt Wdmt |
| Bumper & Counterweight | 6 | Counterweight, Nut, Screw, Washer |
| Grille & Covers | 7 | Bumper, Gas Spring, Gas Spring Clip, Flange, Grab Handle, Screen, Hinge Bracket, Rod Sppt Plate |
| Sound Suppression | 8 | Sound Diffuser, Riser RH Pad, Riser LH Pad, Engine Cover Foam, Louver Weldment, Louver Intake Wdmt, Rear Door Foam |
| Wheel Drives | 9 | Axle Assy, Bearing Cup, Bearing Cone, Axle Housing, Retaining Ring, Axel Seal, -37T Sprocket, Roller Chain |
| Wheels & Tires | 10 | Tire & Rim, Wheel, Valve Stem, Tire and Rim, Heavy Duty Wheel |
| Lift Arm | 11 | Rubber Stem, Safety Arm, Bushing, Spring Bushing, Fitting |
| Rops/FOPS Assembly | 12 | ROPS Isolator, Torsion Spring, Ring, Bushing, Rip-Cord Tag, Grommet, Weather Strip, Isolator Mount |
| Side Windows(Optional) | 13 | - |
| Glass Door(Optional) | 14 | Strip, Top Window Gasket, Cab Seal Foam, Gas Spring, Latch Striker, Front Wiper Harness, Striker Mount Plate, Sael |
| Glass Door Components | 15-16 | Glass Door Kit, Gasket, Grommet, Bulb Seal, Door Hinge, Hinge Bracket, Door Backing Plate, Latch Box Cover |
| Single Pump Washer Bottle(Optional) | 17 | Cable Tie, Reservoir, Breather Tube, Nut |
| Double Pump Washer Bottle(Optional) | 18 | Cable Tie, Reservoir, Breather Tube, Nut |
| Rear Wiper(Optional) | 19 | Cable Tie, Window, Rear Wiper Motor, Wiper Motor Plate, Spritzer Head, Hose Barb, Wiper Blade, Wiper Arm |
| Heater Components(Optional) | 20 | Fitting, Roll Nozzle Louver, Round Louver, Heater, Heater Plenum Wdmt, Heater L Duct, Heater R Duct, Hole Label |
| Restraint Bar | 21 | Bushing, Bumper, Gas Spring, Proximity Switch, Switch Magnet, Hinge R Cover |
| Non-Suspension Seat | 22 | Seat, Seat Std Switch, Slide Rail, Harness, Seat Belt Bracket |
| Mechanical & Air Suspension Seats | 23 | Suspension Seat, Air Suspension Seat, Slide Kit, Cushion Vinyl Kit, Back Panel Kit, Water Drain, Tether Kit, Safety Switch Kit |
| Seat Belt Options | 24 | Retractor Mount Tab, Seat Belt Assy, Nut, Screw |
| Three-Point Restraint Options | 25 | Retractor Mount Tab, Spacer, Restraint Assy, Nut |
| Hand-Foot Controls(1/2) | 26-27 | Bushing, Rod End, Female Std Rod End, Female Rod End, Foot Pedal, Pivot Bushing, Elastomeric Rod End, -Pin Wedge |
| Hand-Foot Controls(2/2) | 28 | Kickplate Pad, Kickplate Under Pad, Backer Pad, Cover Foam, Strip, Larger L Foam, Larger R Foam, Ctrl Opening Foam |
| Joystick Controls(1/2) | 29-30 | Fitting, Cap, Drive Joystick, Grip, Joystick Boot, -Pin Wedge, Adaptor, Joystick |
| Joystick Controls(2/2) | 31 | Kickplate Pad, Kickplate Under Pad, Backer Pad, Strip, Larger L Foam, Larger R Foam |
| Solenoid Valve | 32 | Joystick Valve, Cartridge, Coil, Nut |
| Engine | 33-34 | Fitting, Connector, Hose, Isolator, Spacer, Elbow, Hose Coupling, Fuel Hose |
| Intake | 35 | Air Cleaner Assy, Air Filter, Evacuator Valve, Air Cleaner Cap, Air Cleaner Plate |
| Radiator & Cooler | 36 | Connector, Tee, Spacer, Hose, Foam Seal, Cooler Sppt Palte, Hyd Hose, Bulb Seal |
| Block Heater(Optional) | 37 | Cable Tie, Block Heater, Heater Cord, Block Heater Cord |
| Chassis Electrical | 38 | Battery Rod, Cable Tie, Battery Angle, Horn, White, 55W Light, W Bulb, Red, 35W Light, Chassis Harness |
| Fuses & Relays | 39 | Micor Relay, 20A Fuse, Atm Fuse, Mini Fuse, Fuse, Diode, Maxi Fuse |
| Engine Electrical | 40 | Cable Tie, Solenoid, Electrical Cover, Engine Harness, Battery Cable, Harness Bracket, Alternator Wire, Ground Strap |
| Battery Neg. (-) Cable/Master Disconnect | 41 | Battery Cable, Face Plate, Switch, Switch Cable |
| ROPS Electrical | 42 | Cable Tie, Dome Light, White, 55W Light, W Bulb, Ignition Switch, Cab Harness, Main Keypad Module, Socket |
| Heater, Door & Wiper Electrical | 43 | Cable Tie, Rubber Grommet, Heater Module, Heater Harness, Hose Splice, Inductive Sensor |
| Pin Connector(Optional) | 44 | Cable Tie, -Pin Aux Handle, Duct Cap, Harness, Bracket, 20A Fuse, Mini Fuse, Diode |
| Am/Fm Radio(Optional) | 45 | Radio Antenna, Radio, Wire Radio Harness, Radio Speaker, Radio Bracket |
| Hydrostatics with Drive Motors(1-Speed, Hand-Foot Controls) | 46 | Fitting, Connector, Charge Tube, Tandem Pump, Hose, Hyd Tube, Hyd Hose, Drive Motor |
| One-Speed Drive Motors | 47 | Drive Motor, Roller Bearing, Sprokets Shaft, Seal Kit, Cam, Seal Motor Kit, Seal Cover Kit, Seal Valving Kit |
| Hydrostatics with Drive Motors(2-Speed, Hand-Foot Controls) | 48 | Fitting, Connector, Charge Tube, Solenoid Valve, Tandem Pump, Two-Speed R Motor, Two-Speed L Motor, Tee Run |
| Solenoid Valve | 49 | - |
| Tandem Pump/Engine End | 50 | Tandem Pump, Engine End Pump, Rotating Kit, Servo Piston, Piston Follower, Cover Plate, Gasket, Cam Plate |
| Tandem Pump/Gear Pump End | 51 | Tandem Pump, Gear Pump, Rotating Kit, Servo Piston, Piston Follower, Cover Plate, Gasket, Cam Plate |
| Two-Speed Drive Motors | 52 | Two-Speed R Motor, Two-Speed L Motor, Block Clynder Assy, Valving Cover Assy, Valving Assy, Spool Assy, Support Assy, Earing Kit |
| Hydrostatics with Drive Motors(1-Speed Joystick Controls) | 53 | Fitting, Connector, Solenoid Valve, Hyd Hose, Hyd Tube, Hose, Drive Motor, -Speed Valve Brkt |
| Hydrostatics with Drive Motors(2-Speed Joystick Controls) | 54 | Fitting, Connector, Dual Solenoid Valve, Two-Speed R Motor, Two-Speed L Motor, Tee Run, Hyd Hose, Hyd Tube |
| Tandem Drive Pump | 55 | Tandem Pump, Rotary Group, Drive Shaft Assy, Seeger-V-Ring, Shaft Seal Ring, Bearing, Retaining Ring, Cradle Assy |
| Manifold Valve | 56 | Dual Solenoid Valve, Coil, Cartridge, Seal Kit |
| Chassis Hydraulics | 57 | Fitting, Connector, Straight Fitting, Plate, Top Plate, Temperature Switch, Tube Clamp Plate, Harness Bracket |
| Hydraulic Filter | 58 | - |
| Lift Arm Hydraulics | 59 | Fitting, Lift Cylinder Tube, Liftcylinder R Tube, Liftcylinder L Tube, Hose Assy, Hyd Hose, Cover Plate, Hyd Tube |
| Lift Cylinder | 60 | Cylinder, Piston, Head Gland, Cylinder Rod, Seal Kit, Spring Bushing, Zerk, Spacer |
| Tilt Cylinder | 61 | Bushing, Zerk, Polylube Bearing, Piston, Rod Weldment, Tube Weldment, Seal Kit |
| Coupler Block | 62 | 4SAE Fitting Kit, Male Q-Coupler Kit, Q-Coupler Kit Return, Female Q-Coupler Kit |
| Auxiliary Hydraulics(Hand-Foot Controls) | 63 | Connector, Fitting, Test Port, Plate, Control Valve, Gear Pump, Hyd Hose, Hyd Tube |
| Gear Pump(Hand-Foot Controls) | 64 | Gear Pump, Gear Housing, Front Cover, Rear Cover, Thrust Plate, Drive Shaft, Driven Gear, Snap Ring |
| Spool Control Valve(Hand-Foot Controls) | 65 | Control Valve, Elechyd F Spool Kit, Retainer Seal, Seal Retainer, Combined Valve, Relief Port, Main Relief Valve, Detent Kit |
| Auxiliary Hydraulics(Joystick Controls) | 66 | Fitting, Connector, Gear Pump, Test Port, Plate, Hyd Hose, Control Valve, Hyd Tube |
| Gear Pump(Joystick Controls) | 67 | Gear Pump, Flange Kit, Endcover, Seal Kit, Housing Kit |
| Control Valve(Joystick Controls) | 68 | Control Valve, Elechyd F Spool Kit, Anterior Hydraulic Cntrl, Combined Valve, Relief Port, Main Relief Valve, Rear Hydraulic Control, Elechyd R Spool Kit |
| Hydraulics, Self-Leveling(Hand-Foot Controls) | 69 | Fitting, Connector, Strap, Solenoid Valve, Solenoid L Spacer, Self-Level Valve, Hyd Tube, Plate |
| Hydraulics, Self-Leveling(Joystick Controls) | 70 | Fitting, Connector, Self-Level Valve, Hyd Tube, Plate |
| Self-Level Valve | 71 | Flow Divider Spool, Coil, Valve, Adjustment Cap, Tamper Proof Cover, Spring, Load Check |
| Solenoid Valve | 72 | Cartridge, Coil, Seal Kit |
| Hydraulics, No Self-Leveling(Hand-Foot Controls) | 73 | Fitting, Connector, Strap, Solenoid Valve, Solenoid L Spacer, Hyd Tube |
| Hydraulics, No Self-Leveling(Joystick Controls) | 74 | Hyd Tube |
| Hydraulics(Ride Control & Without Ride Control) | 75 | Fitting, Ride Cntrl Manifold, Accumulator, Spacer Plate, Hose, Hyd Tube, Cap |
| Manifold Assy | 76 | Ride Cntrl Manifold, Coil, Cartridge |
| Hydraulics, No Quick Attach Hitch | 77 | - |
| Quick Attach Hitch Hydraulics | 78 | Fitting, Connector, Tee-Run Connector, Plate, Hyd Hose, Hyd Tube, Quick Attach Valve |
| Quick Attach Valve | 79 | 12VDC Coil, Spool Valve, Regulator, Seal Kit |
| Manual Attach Hitch | 80 | Quick Coupler, Grease Cap, Latch Link, Fitting, Zerk, Spring Stop Link, Spring Slide Link, Adjustable End Link |
| Quick Attach Actuator | 81 | Connector, Fitting, Latching Label, Spring Slide Link, Hyd Power Cylinder, Cylinder Gurad, Stop, Hose Assy |
| Quick Attach Cylinder | 82 | Hyd Power Cylinder, Rod, Piston, Head Gland, Seal Kit, Snap Ring |
| Decals/Badge | 83 | Label, Hydraulic Label, Diesel Fuel Label, Warning Label, Tiedown Point Label, Escape Label, Ignition Label, Fuse Panel Label |
| Decals/Badge | 84 | Keep Out Label, No Riders Label, Warning Label, Safety Label, Lock Label, Attach Brt Decal, Danger Hot Decal, Danger Fan Decal |
| Special Tools | 85 | Hydraulic Gauge Kit, Test Port Adapter, 1000PSI Test Gauge, Test Hose, Rod Seal Install, Fie Pump Timing Kit |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Wheel Assembly Torque | 180 lb.-ft. (244 Nm) | p. 10 |
| ROPS/FOPS Assembly Torque | 32 lb.-ft. (43 Nm) | p. 12 |
| Battery Type | 12 Vdc Wet | p. 38 |
| Battery Group Size | 31 | p. 38 |
| EGR Fuse Rating | 20A | p. 39 |
| Wheel Bolt Torque | 180 lb.-ft. (244 Nm) | p. 10 |
| ROPS/FOPS Bolt Torque | 32 lb.-ft. (43 Nm) | p. 12 |
| Battery Voltage | 12 Vdc | p. 38 |
| Battery Cold Cranking Amps (CCA) | 950 CCA | p. 38 |
| Main Fuse (HEAT/WIPER) | 50A | p. 39 |
| Main Fuse (GLOW PLUGS) | 80A | p. 39 |
| Main Fuse (STARTER) | 60A | p. 4 |
Yanmar S165R-1 (4TNV98C-NMS2) Common Problems This Manual Covers
Yanmar S165R-1 hydraulic filter part number unclear, need correct replacement filter for scheduled service p. 58
Check the Hydraulic Filter exploded view on page 58. The diagram breaks the filter assembly into individual components, each with its own part number, including the filter element, housing, and seals. Verify your serial number range against the parts list header before ordering, as part numbers can vary between production runs.
Manual Section: Hydraulic FilterSeat switch assembly part number needed, machine won't enable functions without operator present p. 22
Find the seat switch on the Non-Suspension Seat diagram on page 22. The switch is itemized separately from the seat frame, rails, and harness bracket. Identify it by item number in the exploded view, then pull the corresponding part number from the adjacent parts list. For mechanical or air suspension seat configurations, the diagram is on page 23.
Manual Section: Non-Suspension SeatReplacement battery specs not clear, need correct group size and CCA rating before ordering p. 38
Check the Chassis Electrical diagram on page 38, which lists the battery as a 12 Vdc wet battery, Group 31, rated at
Frequently Asked Questions
What is the torque spec for Yanmar S165R-1 wheel nuts?
The torque specification for the Yanmar S165R-1 wheel nuts is 180 lb.-ft. (244 Nm). This information is provided in the remarks section of the 'WHEELS & TIRES' diagram.
How do you fix yanmar S165R-1 hydraulic filter part number unclear, need correct replacement filter for scheduled service?
Check the Hydraulic Filter exploded view on page 58. The diagram breaks the filter assembly into individual components, each with its own part number, including the filter element, housing, and seals. Verify your serial number range against the parts list header before ordering, as part numbers can vary between production runs.
How do you fix seat switch assembly part number needed, machine won't enable functions without operator present?
Find the seat switch on the Non-Suspension Seat diagram on page 22. The switch is itemized separately from the seat frame, rails, and harness bracket. Identify it by item number in the exploded view, then pull the corresponding part number from the adjacent parts list. For mechanical or air suspension seat configurations, the diagram is on page 23.
How do you fix replacement battery specs not clear, need correct group size and CCA rating before ordering?
Check the Chassis Electrical diagram on page 38, which lists the battery as a 12 Vdc wet battery, Group 31, rated at 950 CCA. Order to these exact specs; undersizing CCA causes hard cold-weather cranking on a diesel. If you also need the negative cable or master disconnect part numbers, those components are diagrammed separately on page 41.
Is this Yanmar S165R-1, 4TNV98C-NMS2 Parts Catalog a digital download?
This is a 93-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
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Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy the full text. The text throughout the catalog is crisp and easy to read. All diagrams and illustrations are raster images, so they will show some pixelation if you zoom in significantly, but their labels remain generally readable. The pages are clean, well-aligned, and free from scan artifacts or other marks. There are no notable blank or filler pages in this catalog.
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