Noticed yesterday that the toggle switch activated choke not working (motor still starts, but butterflys not closed when working the toggle)I can move the solenoid plunger by hand, just not electrically. I "assume" the solenoid has gone south. How can I check, is it difficult to replace(Yes, I have the manual, loooks easy to get to)and where can I get a new solenoid for a 1975 50hp.<br />Thanks