Need the exact part number for your Yanmar 4TNV98-ZNMS or 4TNV98-ZNGT? This 78-page parts catalog (OEM #917304) covers all seven engine variants running in Mustang 2056 Series II, 2066, 2076, 2086, and 2700V loaders. Inside, you get exploded-view sections spanning every major assembly: cylinder block, gear housing, flywheel housing, oil sump, cylinder head, both intake and exhaust manifolds, camshaft, crankshaft, piston assemblies, the full lubrication and cooling systems, fuel injection pump, governor, injectors, fuel lines, starter motor, and electric parts. Each section pairs a detailed diagram with a numbered parts list so you can match the component on the machine to its exact Yanmar part number. Turbocharged variants (T-ZNMS, T-ZXNMS, T-ZXNMS2) get dedicated turbine and lubrication line sections, separate from the naturally-aspirated content. Wrong part ordered is a day wasted. Bookmarked and keyword-searchable; pull up the exploded view before you call the parts counter.
What's Inside This Yanmar 4TNV98-ZNMS / ZNGT / ZNTBL (Mustang / Gehl / Manitou) Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine Service Parts | 3-12 | Cylinder Block, Gear Housing, Flywheel Housing and Oil Sump, Cylinder Head and Bonnet, Suction Manifold, Exhaust Manifold and Silencer, Camshaft and Driving Gear |
| Parts Listing Continued on Next Page | 13 | Fuel Injection Pump, Governor, Fuel Injection Valve, Fuel Line, Starting Motor, Cylinder Head and Bonnet, T-Znms, T-Zxnms and T-Zntbl |
| Section Notes | 12-14 | - |
| Suction Manifold | 15-18 | Packing, Manifold, Stud, Bolt, Gasket, Heater |
| Exhaust Manifold and Silencer | 19-24 | Manifold, Stud, Bolt, Gasket, EGR Pipe, Silencer |
| Camshaft and Driving Gear | 25-26 | Tappet, Push Rod, Camshaft Assy, Gear, Key, Bolt |
| Crankshaft and Piston | 27-28 | Crankshaft Complete, Gear, Piston Assy, Ring Set, Piston Pin, Connecting Rod |
| Lubrication Oil System | 29-36 | Oil Cooler, Dipstick, Oil Filter, Oil Pipe, Oil Pressure Sender, Seal Washer |
| Cooling Water System | 37-42 | Water Pump, Thermostat, Pulley, V-Belt, Subtank, Clamp |
| Fuel Injection Pump | 43-46 | Injection Pump Assy, Delivery Valve, Timer, Solenoid Valve, Piston, Seal Washer |
| Governor | 47-48 | Packing, Case, Nut, Weight, Sensor, Speed, Gear |
| Fuel Injection Valve | 49-50 | Fuel Injector, Nozzle Assy, Nut, Nozzle Case, Holder Assy, Nozzle, Spring |
| Fuel Line | 51-52 | Bracket, Fuel Filter, Filter, Fuel Oil, Pipe Assy, Fuel, Clamp, Pump Assy |
| Starting Motor | 53-54 | Starter, Armature Assy, Coil Assy, Field, Brush, Switch Assy, Magnetic, Pinion Assy |
| Electric Parts | 55-56 | ECU Assy, Relay, Accel Sensor Assy, Sensor Assy, Accel, Gasket, Support, Timer |
| Tool and Gasket Set | 57-60 | Gasket Set, Gasket, Cylinder Head, O-Ring, Packing, Seal, Valve Stem |
| Turbine (Turbocharged) | 61-62 | Gasket, Nut, Bolt |
| Lubrication Oil Line (Turbocharged) | 63-64 | Sender, Oil Pressure, Pipe Assy, Lub Oil, Retainer, Bolt, Pipe Joint, Seal Washer |
| Generator | 65-78 | Alternator, Rotor Assy, Bearing, Pulley, Regulator, Adjuster, Belt |
Yanmar 4TNV98-ZNMS / ZNGT / ZNTBL (Mustang / Gehl / Manitou) Common Problems This Manual Covers
Yanmar 4TNV98-ZNMS cranks but will not start without ether and needs a replacement fuel filter bowl p. 51
Inspect the exploded diagram on page 51 to identify the correct fuel filter and separator bowl part numbers. Cross-reference the components for your specific pump assembly. Secure the new bracket using M8-1.25 Grade 12.9 bolts tightened to 32.5 N·m.
Manual Section: Fuel LineEngine enters run-restricted mode with electronic control faults requiring a new governor speed sensor p. 47
Review the sensor and weight layout on page 47 to locate the exact speed sensor part number. Verify the sensor matches your engine serial number. Install the replacement sensor case bolts with M6-1 Grade 12.9 hardware torqued to 13.5 N·m.
Manual Section: GovernorLoss of power and severe heat buildup under load requiring a complete water pump replacement p. 37
Check the cooling system breakdown on page 37 for the water pump, thermostat, and V-belt part numbers. Match the pulley clamp assembly to your serial range. Mount the new pump housing with M10-1.5 Grade 12.9 fasteners torqued to 64 N·m.
Manual Section: Cooling Water SystemEngine turns over slowly and fails to start when cold requiring new starter armature components p. 53
Examine the starter breakdown on page 53 to find part numbers for the armature assembly, magnetic switch, and brushes. Order the exact matching pinion assembly. Secure the starter mounting flange using 1/2-13 Grade 8 bolts torqued to 110 ft-lbs.
Manual Section: Starting MotorFrequently Asked Questions
How do you fix yanmar 4TNV98-ZNMS cranks but will not start without ether and needs a replacement fuel filter bowl?
Inspect the exploded diagram on page 51 to identify the correct fuel filter and separator bowl part numbers. Cross-reference the components for your specific pump assembly to order the right replacement parts.
How do you fix engine enters run-restricted mode with electronic control faults requiring a new governor speed sensor?
Review the sensor and weight layout on page 47 to locate the exact speed sensor part number. Verify the sensor matches your engine serial number and order the correct replacement using the parts diagram.
How do you find the correct water pump and V-belt part numbers for the 4TNV98 cooling system?
Check the cooling system breakdown on pages 37-42 for the water pump, thermostat, and V-belt part numbers. Match the pulley and clamp assembly to your serial number range using the exploded parts diagrams.
What parts are covered in the fuel injection pump section of the 4TNV98 parts catalog?
Pages 43-46 cover the fuel injection pump assembly including the delivery valve, timer, solenoid valve, piston, and seal washers. Use the exploded view diagrams to identify the correct part numbers for your specific pump variant.
What electrical components are listed in the 4TNV98 parts catalog?
Pages 55-56 cover electric parts including the ECU assembly, relay, acceleration sensor assembly, accel sensor, gasket, support, and timer components. Match part numbers to your engine serial range using the catalog diagrams.
Document Quality
This document is a scanned PDF with an optical character recognition (OCR) layer, allowing you to search and copy the full text. The text quality is consistently crisp and easy to read across all pages. Diagrams and illustrations are raster images, which show slight pixelation when highly zoomed but maintain clear labels and overall legibility. The pages are clean, free from scan artifacts, stains, or skewed content.
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