Yanmar YTW200
Series: YTW Series
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The Yanmar YTW200 is the smallest unit of the YTW Series, which comprises diesel-engine-driven welding sets. In the data it is listed as an industrial engine because the diesel engine is its core; it drives a generator that supplies the welding current. That makes welding possible on sites without a mains connection, for example on pipelines, structural steel in the field or repairs to farm machinery.
The engine delivers 7.7 kW at 2400 min-1. Welding current is given as 70-200 A, with a rated current of 180 A; welding voltage is 29 V. The dry weight of 220 kg is low for a set of this kind and allows transport on a small trailer or flatbed.
The dimensions of 1180 x 550 x 816 are compact, so the unit can be carried in service vehicles. Compared with the larger models of the series, the YTW200 is designed for electrodes of medium diameter, as common in construction and maintenance work.
Yanmar YTW Series – Diesel-Powered Welder-Generators from Japan
The YTW series belongs to Yanmar's Compact Power Products division and comprises diesel-powered welder-generators: compact units that supply both welding current for arc welding and AC power for running tools and lighting. They are driven by Yanmar's own small industrial diesel engines, which the manufacturer has built for decades for construction, agricultural and emergency-power applications. The series includes models such as the YTW2, YTW200, YTW250 and YTW300. The units are designed for mobile use on construction sites and in assembly work, wherever welding and power supply are needed without a fixed grid connection. Listed in the register: YTW200, YTW250, YTW300, YTW350.
Sources: Yanmar – YTW Series
Technical data
Engine
| Fuel | dieselcorrect |
|---|
Dimensions and weights
| Dry weight | 220 kgcorrect |
|---|
Other data
| Dimensions | 1180 x 550 x 816correct |
|---|---|
| Engine power | 7.7 kW bei 2400 min-1correct |
| Voltage | 29 Vcorrect |
| Welding current a | 70-200 (Nennstrom 180)correct |
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 6 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: Manufacturer documentation, yanmar.com (retrieved August 2026) · speccodex.com (retrieved October 2026) · How we check the data
Diesel engine in 3D section
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