For MIG/MAG welding, you must use shielding gas (CO2 or Argon/CO2 mix) and standard solid wire. For No Gas, use flux-cored wire and reverse the polarity as specified under the welder's lid.
While specific physical manuals can be rare for older units, standard operating procedures for the 150E, as outlined in community guides from Scribd , involve these key steps: decastar 150e manual
The includes several pages of parameter tables. Here is a digest of the most critical ones: For MIG/MAG welding, you must use shielding gas
Usually controlled by two switches (often labeled 1-2 and Min-Max), providing four distinct voltage levels to set the arc's intensity Wire Speed Knob: Here is a digest of the most critical
Note: I assume you mean the Decastar 150E electric dirt bike (150cc-class equivalent e‑motorbike). If you meant a different Decastar model, say which and I’ll adapt.