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Author Topic: Broken throttle return spring on 2017 Zero SR  (Read 497 times)

dittoalex

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Broken throttle return spring on 2017 Zero SR
« on: January 26, 2020, 08:39:24 AM »

My throttle assembly's return spring no longer moves it back to neutral when it is near 0% or 100%, and lazily returns a little when it's in the middle.  I think I broke it by using a mechanical  throttle clamp 'cruise control' device[1] , I'd been feeling the groaning of the throttle spring when forcing roll-off while clamped, so I don't think the pinion gear of the throttle needs adjusting[2] as the throttle remains smooth and not snatchy.  If I disassemble the throttle, can I tension the return spring to proper, snappy operation?  Can I buy a replacement return spring, rather than an entire assembly[4]? 

[1] https://www.amazon.com/Motorcycle-Throttle-Aluminum-Silicone-Motorcycles/dp/B07Q492CNH/
[2] http:///boards/index.php?topic=6382.msg49746#msg49746
[3] https:///harlanflagg/videos/1364143910276196/
[4] https://www.af1racing.com/store/Scripts/prodView.asp?idproduct=89077&sku=ZM45-08039&description=THROTTLE+BITRON+HALL+EFFECT+PCB+%2D+ZM45%2D08039
« Last Edit: January 26, 2020, 08:45:02 AM by dittoalex »
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BamBam

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Re: Broken throttle return spring on 2017 Zero SR
« Reply #1 on: January 28, 2020, 09:46:12 PM »

I would certainly think that you can just replace the throttle return spring.  The spring is very tricky to install.  I had to reinstall mine when I took the throttle clam shell apart to install heated grips.  I used a flat blade screwdriver that I modified with a notch to grab the end of the spring and rotate it around into place.
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Currently Owned Bikes:
2017 Zero DSR Limited Edition (original owner, running)
2008 Kawasaki KLR 650 (original owner, red now black, running)
1997 Honda Valkyrie (original owner, first year in black, running)
1975 Kawasaki H2 750 (original owner, purple, not running)
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