Bridgestone Motorcycle Parts Discussion Board
Bridgestone Tech Talk => 350 Talk => Topic started by: davis on October 26, 2018, 08:28:22 PM
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Just wanted to share an idea on making the Neutral Switch Case leak-free. I got tired of cracking the (old) plastic cases from either installation or engine vibration so I cut a groove in the shifter drum shaft for a #013 (1/16" nominal) o-ring and wrapped teflon tape on the center screw threads. I haven't run with this modification, but bench tested it using kerosine without leaking. I also had some success with using rubber washers under the three mounting screw heads.
- Bob
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nopics
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Bob was unable to post a pic of his fix. He sent it to me and asked if I'd post it, so here it is.
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Bob,
Great job on fitting an 'o' ring to the change drum. I fitted a neutral switch just last week and within hours was taking it off again to try resealing it. Occurred to me that BS could have so easily installed a seal on the shaft. Brian
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Thanks Brian.
If you don't want to replace the shift drum (as I am going to do this winter) the teflon tape on the longest screw that can be fit in (13mm) will slow down the leak significantly.
- Bob
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Cheers Bob, will take you up on tip to seal thread with tape. Pull it off again.............Aaaarrrrrgggggh ;) Brian.
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Brian,
I see that Bob calls it 'teflon' tape...I'm not familiar with that, so wondered what we would buy over here...PTFE?
Steve
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Hi Steve,
You are right, Teflon tape in the US, PTFE here, same stuff. Brian.