Part of the Kubota Repair Manuals.
This is the Kubota Workshop Manual for the W5019 and W5021 walk-behind mowers, a 190-page PDF that covers the full run of variants, including the W5019-P, W5019-T, W5021-PC, W5021-HT, W5021-SC, and their C and E suffix versions. All are powered by Kubota GH150V series engines.
Written for technicians, it opens with detailed engine and mower specifications, then explains the machine mechanism: the automatic pressure relieving system, the carburetor, the sub PTO shaft, the power train, the mower blade clutch, and the wiring diagram. A supplement adds dimensions and the flywheel brake mechanism.
Use it to diagnose starting and running faults, service the blade clutch and transmission, set the correct torque values and clearances during reassembly, and trace electrical problems. The document has a text layer, so you can search model numbers and spec names directly in the PDF.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Workshop Manual | 1-2 | Manuel D'Atelier, Werkstattanleitung, W5019, W5021 |
| Record of Revisions | 3-8 | Record of Revisions Table (Last Digit of the Code No., Issue Month, Main Revised Point and Corrective Measures, Reference Page), Avant-Propos (Mécanismes, Démontage Et Entretien) |
| Specifications | 9-22 | Engine Specifications, Engine Model Variations, Walk Behind Mower Specifications, Walk Behind Mower Model Variations |
| Mechanism | 23-36 | Engine (Automatic Pressure Relieving Mechanism, Carburetor, Sub PTO Shaft), Transmission (Power Train), Mower Blade Clutch, Wiring Diagram |
| Supplement | 169-190 | Dimensions, M. Mechanism (Flywheel Brake) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Engine Drain Plug Tightening Torque | 19.6 to 29.4 N-m (2.0 to 3.0 kgf·m, 14.5 to 21.7 ft-lbs) | p. 60 |
| Spark Plug Tightening Torque | 9.8 to 24.5 N-m (1.0 to 2.5 kgf·m, 7.2 to 18.1 ft-lbs) | p. 60 |
| Rotor Mounting Nut Tightening Torque | 58.8 to 68.6 N-m (6.0 to 7.0 kgf·m, 43.4 to 50.6 ft-lbs) | p. 60 |
| Cylinder Head Screw Tightening Torque | 24.5 to 32.4 N-m (2.5 to 3.3 kgf·m, 18.1 to 23.9 ft-lbs) | p. 60 |
| Connecting Rod Screw Tightening Torque | 13.7 to 19.6 N-m (1.4 to 2.0 kgf·m, 10.1 to 14.5 ft-lbs) | p. 60 |
| Blade Mounting Screw Tightening Torque | 49.0 to 58.8 N-m (5.0 to 6.0 kgf·m, 36.2 to 43.4 ft-lbs) | p. 60 |
| Engine Oil Capacity | 0.6 l (0.6 U.S.qts. 0.53 Imp.qts.) | p. 9 |
| Engine Oil Change Interval | First month or initial 20 hours, then every 6 months or 100 hours | p. 63 |
| W5019-P, W5019-PC, W5019-T, W5019-TC, W5019-TE, W5019-TCE | ||
| Fuel Capacity (W5019-P, W5019-PC, W5019-T, W5019-TC, W5019-TE, W5019-TCE) | 1.5 l (1.6 U.S.qts. 1.32 Imp.qts.) | p. 9 |
| Transmission Oil Capacity | 0.1 l (0.1 U.S.qts., 0.09 Imp.qts.) | p. 11 |
| W5021-PC, W5021-PCC, W5021-TC, SC, W5021-HT, CT, W5021-SCC, HTC | ||
| Fuel Capacity (W5021-PC, W5021-PCC, W5021-TC, SC, W5021-HT, CT, W5021-SCC, HTC) | 3.5 l (3.7 U.S.qts. 3.08 Imp.qts.) | p. 10 |
| W5021-PC, W5021-PCC, W5021-T, W5021-TE, W5021-SCE, TCE | ||
| Transmission Oil Capacity | 0.1 l (0.1 U.S.qts., 0.09 Imp.qts.) | p. 12 |
