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Makes And Models => Zero Motorcycles Forum | 2013+ => Topic started by: dittoalex on January 26, 2020, 08:39:24 AM

Title: Broken throttle return spring on 2017 Zero SR
Post by: dittoalex 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
Title: Re: Broken throttle return spring on 2017 Zero SR
Post by: BamBam 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.