[Michael Jennings]

Hello again,
I was checking the ES250/2 again earlier this year and found that the problem was corrosion in the ignition switch. The switch has little steel pins which extend through the base of the switch between the brass switch rotor section and the base terminals and the pins had corroded causing intermittent resistance. The switch was a new one but the pins don’t seem to have been plated so the steel started to corrode almost immediately, and the contact surfaces at the ends of the pins are very small. I made stainless steel replacements and fitted them with no problems since. You need to separate the upper and lower halves of the switch and the pins are visible when you remove the rotor.

Cheers, MikeJ

[Michael Jennings]

Hello Matthew,

thanks for the reply – I’m thinking that somehow the ignition switch was earthing via the regulator if the regulator switching arm was stuck closed but that’s just a surmise. It seemed to instantly solve the problem when I moved the switching arm by hand. My old 150 had a similar problem caused by the mechanical regulator.

Cheers, Mike

[Michael Jennings]

Hello Brian,

thanks for the confirmation,

Cheers, Mike

[Michael Jennings]

Hello Brians,

many thanks for your replies and the useful info. Many years ago I had to push a TS150 14 miles home as the regulator had packed up so I decided to have a fiddle with that after rechecking the battery earth – Bingo, everything worked after I’d gently moved the mobile switching points, so I’ll be fitting an electronic regulator, which I bought for a TS125. Do you know if there is any reason not to fit it to the ES250/2 as they are both 6v?

Cheers, MikeJ

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