All 44 pages of this Yanmar 4TNV98-VTBZ / TB175 Parts Catalog PDF focus on one mission: getting you the right part number for your Takeuchi TB175 engine, fast. Inside, exploded views step through every assembly: cylinder block, camshaft drive, crankshaft and piston, fuel injection pump with inner parts and governor, starting motor, alternator, and a complete Tool & Gasket Set section covering seals, O-rings, and packing kits. Cross-reference part numbers against the index, then confirm by component name in each figure so your order goes in right the first time. Confirm the crankshaft parallel pin at 10x22 mm and the flywheel key at 7x14 mm before you call your dealer; those factory dimensions sit right next to the part numbers in the exploded view. No more reading worn ID tags and guessing. Bookmarked by assembly, so you jump straight to the figure you need on any device and get back to work.
What's Inside This Yanmar 4TNV98-VTBZ, TB175, 4TNV98-YTBL Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Cylinder Block | 4-5 | Block Assy, Camshaft, Main Bearing Set, Thrust Bearing, Cylinder Head Gasket |
| Gear Housing | 6-7 | Housing Assy, Lub. Oil Pump, O-Ring, Packing, Cover, Gasket |
| Flywheel Housing & Oil Sump | 8-9 | Flywheel Housing, Oil Sump, Drain Plug, Seal, Gasket |
| Cylinder Head & Bonnet | 10-11 | Cylinder Head Assy, Valve, Valve Spring, Rocker Arm Assy, Bonnet Assy, Gasket |
| Suction Manifold & Air Cleaner | 12-13 | Air Intake Manifold, Air Cleaner Assy, Air Cleaner Element, Heater, Gasket |
| Exhaust Manifold & Silencer | 14-15 | Exhaust Manifold, Silencer, Gasket, Clamp, Stud Bolt |
| Camshaft & Driving Gear | 16-17 | Camshaft Assy, Driving Gear, Tappet, Push Rod, Idle Gear, Fuel Injection Pump Gear |
| Crankshaft & Piston | 18-19 | Crankshaft, Piston, Connecting Rod, Flywheel, V-Pulley, Main Bearing |
| Lub.Oil System | 20-21 | Dipstic, Lub Oil, Pipe Assy, Lub. Oil, Switch, (0.5KG) L. O., Filter 80X80L, Braket |
| Cooling Water System | 22-23 | Pump Assy, Water, Pulley, V-Belt, Fan, Cooling, Thermostat, Hose a Assy |
| Radiator | 24-25 | Subtank, Cap, Assy, Rubber, Cushion, Cock Assy, Drain |
| Governor(Inner Parts) | 30-31 | Packing, Case, Lever, Regulator, Bolt, Idle Limit, Weight Assy, Solenoid |
| Fuel Injection Valve | 32-33 | Valve Assy, F. Inject, Nozzle Assy, Nut, Nozzle Case, Spring, Nozzle, Shim Pack |
| Fuel Line | 34-35 | Bracket, Filter, Pipe Assy, F. O. Return, Pump Assy, Fuel Feed, Fuel Oil |
| Starting Motor | 36-37 | Armature Assy, Ball Bearing, Coil Assy, Field, Brush, Pinion |
| Generator | 38-39 | Adjuster, Belt, Alternator Assy, Rotor Assy |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| L.O. SWITCH pressure rating | 0.5 kg | p. 21 |
| LUB. OIL FILTER dimensions | 80x80L | p. 21 |
| PARALLEL PIN dimensions | 10x22 mm | p. 19 |
| KEY dimensions | 7x14 mm | p. 19 |
| O-RING size | G-60.0 | p. 21 |
| BOLT size | M10x130 | p. 39 |
Yanmar 4TNV98-VTBZ, TB175, 4TNV98-YTBL Common Problems This Manual Covers
Yanmar 4TNV98-VTBZ engine leaking oil near the filter housing or showing low oil pressure switch faults. p. 21
Inspect the exploded view on page 21 to identify the exact replacement components. Locate the part number for the oil filter with 80x80L dimensions. Find the specific L.O. switch rated for 0.5 kg pressure to fix the sensor fault. Order the exact G-60.0 O-ring to seal the housing properly.
Manual Section: Lub.Oil SystemAlternator rattling loose due to missing mounting hardware or broken tensioner bracket assembly. p. 39
Check the generator exploded diagram on page 39 to find the correct mounting hardware. Identify the specific part number for the M10x130 size bolt securing the alternator assembly. Cross-reference the adjuster bracket and belt part numbers to replace any damaged tensioning components at the same time.
Manual Section: GeneratorNeed to order rebuild components for spun connecting rod bearings or damaged crankshaft journals. p. 19
Review the crankshaft and piston parts list on page 19 to source your rebuild items. Find the exact part numbers for the main bearings and connecting rods. Locate the 10x22 mm dimensions parallel pin and the 7x14 mm dimensions key to ensure correct alignment during reassembly.
Manual Section: Crankshaft & PistonFrequently Asked Questions
What are the replacement specifications for fuel filters?
For replacement of fuel filters, the manual lists several parts under the 'Fuel Line' section. These include FILTER, FUEL (part no. 119802-55800), FILTER, FUEL OIL (part no. 129901-55800 or 129917-55800), and ELEMENT KIT, FILTER (part no. 129917-55850).
What are the replacement specifications for air filter?
For replacement of air filters, the manual lists parts under the 'Suction Manifold & Air Cleaner' section. These include CLEANER ASSY, AIR (part no. 129953-12502), ELEMENT ASSY, INNER (part no. 119005-12571), and ELEMENT (part no. 129062-12560).
How do you fix yanmar 4TNV98-VTBZ engine leaking oil near the filter housing or showing low oil pressure switch faults?
Inspect the exploded view on page 21 to identify the exact replacement components. Locate the part number for the oil filter with 80x80L dimensions. Find the specific L.O. switch rated for 0.5 kg pressure to fix the sensor fault. Order the exact G-60.0 O-ring to seal the housing properly.
How do you fix alternator rattling loose due to missing mounting hardware or broken tensioner bracket assembly?
Check the generator exploded diagram on page 39 to find the correct mounting hardware. Identify the specific part number for the M10x130 size bolt securing the alternator assembly. Cross-reference the adjuster bracket and belt part numbers to replace any damaged tensioning components at the same time.
What format is this manual in?
You get a 44-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print this manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy the full text. The text is generally crisp and easy to read throughout the parts catalog. Diagrams and illustrations are raster images, which become pixelated when highly magnified, but all labels and part numbers remain clearly readable. Pages are clean with no significant scan artifacts, stains, or skewed content. There are no notable blank or filler pages present in this catalog.
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