how do I tell a Walbro 190 from 255?

[doodie]

My friend bought his GST with a walbro fuel pump but hes not sure whether its a 255 or a 190lph? is there anything on the fuel pump itself that distinguishes it between the both?

 

[psychlow]

Yep, there should be a model number on the pump.

GSS### is the format.

 

[Coldandafraid]

The part numbers

190 lph - gss-250

255 lph - gss-317

255 high - gss-342

 

[doodie]

thanks guys, we'll take it out to check.