Water temp gauge

[yellbird]

Would like to change water temp gauge to numbers rather than the bar it uses, any idea what will work Thanks

 

[mechanic mark]

Name of mower manufacturer, model & serial numbers from mower & engine, & engine manufacturer.

 

[yellbird]

Grasshopper 727KW,5511734, Kawasaki FD750D 03, Don't know where to find serial number on engine, Thanks