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Honda Nighthawk 700s Transmission broken shift fork

This is one of the problems with the transmission. This is a shift fork from an 85 Honda Nighthawk 700s. The clutch had huge play in it and was slipping and grabbing, slipping and grabbing. Looks like this is the primary problem, but I'll have to install the new (used) forks and see if the play is gone. The spare engine has a MUCH tighter transmission


 


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Honda Nighthawk 700s transmission: How It Works, shift drum
How a motorcycle shift drum works: The shift drum controls three shift forks by a stub that rides in a slot. The slot moves the fork which moves a slider gear. The slider gears has pegs that fall into holes in the driven gear. The slider gears engage on either side, 3 sliders X 2 sides = 6 gears. Sometimes if your gears clash, the slots and dogs will round off, this can cause the gear to pop out when you apply torque. The drum is shifted with a ratchet system operated with your foot.





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Taking apart a Honda NightHawk 700S engine/transmission. This bike would pop out of second gear under moderate to heavy throttle.





How a Motorcycle Clutch Works High Detail and Very Basic
You can get a clutch set like this on Amazon http://www.amazon.com/gp/product/B000GV6AFW/ref=as_li_qf_sp_asin_il_tl?ie=U TF8&camp=1789&creative=9325&creativeASIN=B000GV6AFW&linkCode=as2&tag=httpww wyou00f-20 I got this one at Rocky Mountain ATV MC http://www.rockymountainatvmc.com/p/44/54/228/895/3529/3011/Tusk-Clutch-Kit The bike in the video is a 2003 CRF 450 R. It would start moving forward in 1st gear when the engine RPMs got near idle. This caused a stalling problem. At higher RPMs it was OK. There was no slipping etc. Given the $50 price of replacing the frictions AND steels it made sense to replace them instead of just cleaning them. We also replace the gear oil of course. The cause was bad oil and wear material causing a sticky/suction issue that made the clutch engage when RPMs were below 1000 even with the clutch cable adjusted and the clutch lever fully applied. It works AWESOME now! How a Motorcycle Clutch Works High Detail and Very Basic





Suzuki GSX-R Transmission Install & crankcase assembly
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Motorcycle Transmission in action
The inside of a motorcycle gearbox. With my right hand I am spinning the axle and with my left hand I am shifting through the gears. 1-N-2-3-4-5 Transmission is of a 1981 Yamaha SR250.





KLR 650 shifter ratchet spring replacement
My KLR 650 was stuck in second gear and would not shift up or down. the shift pawl spring was broken and this is a video of replacing it.I was thought it might be the shifting fork but is wasn't. This is real time, this is how long it takes. if you have the parts about 1/2 hour.





Kawazaki ZX9 Gear change Problems Solved! Stuck gear? Bad language sorry.
If you want to send me a drink as a friend click the link https://www.paypal.com/uk/webapps/mpp/send-money-online my email is combert@tiscali.co.uk. ;-) Let me know if this has helped you? Don't strip your gearbox until you've done this ;-) good luck boys 👍 For old zx kwakas don't move the gears without engine running, as you may damage the neutral finder bearing ! That means Don't bump it! If you want to send me a drink as a friend click the link https://www.paypal.com/uk/webapps/mpp/send-money-online my email is combert@tiscali.co.uk. ;-)





Honda CB450 shift problem diagnosis
This bike has the infamous 2nd shift problem Symptoms include: popping out of 2nd gear not going into 2nd gear Basically every part that could wear out....did. Parts worn: shift drum detent wheel 2 of 3 shift forks *Dad, i solved it, this will be a bad bike when its done. Thanks for the support! -Dan*





Honda CB750 transmission shifts
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Honda Nighthawk 700s transmission
Finished the teardown of the spare engine on the Honda Nighthawk 700s. I need the shift forks for the other engine.





honda cb 750 nighthawk sc 1984





Motorcycle gearbox tutorial, part 1.
Correct use and operation of a motorcycle gearbox.





Shifting Problems ? Honda Dirtbike XL100, XR100 ETC.
How Shifting Works On A Honda XL100S or XR100 - Also relevant to many other models. NOTE: Problem May Be With Your Shift Drum and Shift Forks!





Riding my new (to me) 1984 Honda Nighthawk CB700SC
30 minute ride on my 84' Nighthawk 700s. Perfect afternoon weather, beautiful Michigan back roads.





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