Left brake micro-switch

My SW is becoming balky to start and I have traced it to the micro-switch on the left bar end. If I remove the brake lever it starts instantly every time. With the lever in place it is hit or miss, even when max pressure applied to lever! Can find no way to adjust travel of the switch. Anyone have an idea???

Spritz the micro switch with contact cleaner.

Depending on the age/mileage on your SW you might want to just put a new switch on order.

Partzilla usually has excellent parts availability and prices.

Tim

Took the brake lever back off and used needle nose plier to "tweek" the action bar back toward the rear a bit. Have to squeeze hard but is much better than before!!

jcctx, thanks for the follow up. It is always nice to see the resolution to the problems. That is what makes this site the best.

SteveO

On the very same Sunday,while out for a ride with the club,I had the same problem!! When I got home,I listened for the double clicks of the two micros on the left lever. The rear light sw. gave a nice crisp "click" but the brake sw.operation was barely audible.It also seemed to be gummed up and was slow to exit the dual sw.assy.That same day, I read this post, got some contact cleaner and gave it a good couple of squirts and exercised the lever multiple times.That seems to have done the trick.Might just order a new assy.as back up though.

Switch Assy.Front Stop Pt.No.35340-KFG-000 is available from www.2wheelpros.com for USD 18.88 +shipping. I have just ordered one but,unfortunately for me being in Oz, the shipping is $10 more than than the cost of the item.Happens a lot.  

ericclapham wrote:

On the very same Sunday,while out for a ride with the club,I had the same problem!! When I got home,I listened for the double clicks of the two micros on the left lever. The rear light sw. gave a nice crisp "click" but the brake sw.operation was barely audible.It also seemed to be gummed up and was slow to exit the dual sw.assy.That same day, I read this post, got some contact cleaner and gave it a good couple of squirts and exercised the lever multiple times.That seems to have done the trick.Might just order a new assy.as back up though.

Sometimes "free" advice is worth the price.