S175 cooling fan problems

Musicdamage

New member
Joined
Oct 11, 2020
Messages
2
I replaced two hyd lines in back of hydrostatic pump and had to drop cooling fan housing. After all back together getting a code m3507 and general warning light stays on. When it gets to operating temp and fan comes on it never goes back off and it the fan goes up and down with the rpm of the engine, It's never done that before. Any ideas.? Thanks
 
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