QuestionHi, I have a 1989 kawasaki ninja zx-7 model "H1"
i am having trouble with the 2nd gear. When i ride it in 2nd gear and let go of the throtle, after the rpm's fall down below 6000, the bike falls in neutral, but only if i let go completely of the throtle. I have changed the shifting forks, but it still does the same thing. I was told that it might be the gear it self that is a bit worned-out but i don't know.
If you have any info that could help me with my problem, it would be very appreciated.
Thanks, Daniel.
daniellevesque44@hotmail.com
AnswerHi Daniel,
The problem is common with worn gear cogs & dogs. The transmission gears need to be inspected.
Review the tech file below. I'll send tech files to your email addy, too.
Respectfully,
Mark Shively
Motorcycle Transmission Problems
By Mark Shively
Slipping out of Gear:
Trying to mate slower spinning sliding gears with very high spinning fixed gears is hard on the transmission. If the transmission is slipping out of 1st or 2nd gears, the dogs and cogs are rounded (worn) and must be replaced.
Race Shifting:
If it won't shift from 1st into 2nd at or near redline, try pre-loading the shift lever with your toe (raise the lever) and when you want to shift, quickly twist the throttle closed and then full-throttle again. Don't use the clutch. The transmission will shift into the next gear. This is a racing technique known as "pre-loading" the shifter. It should shift as quickly as you can turn the throttle. It's not the best thing for the clutch and transmission, but racing MC's get complete rebuilds frequently and parts inspected and replaced.
Inside the Engine:
When you step on the shift lever, the shift linkage turns the shift drum slightly and causes shifting forks to move. Shifting forks mate with shift drum via dowels and grooves. The shift forks move sliding gears to engage the gear's dogs with its mating gear's cogs.
When a gear is “forced” to engage another gear, as if trying to shift from Neutral to the next gear, expensive damages may result. This causes premature transmission and clutch parts wear and failure.
Hauling in Neutral:
Tie-down straps secure our motorcycles and ATV's well when used properly during transportation. We tend to use a variety of materials and things to secure motorcycles and ATV's when transporting.
When the motorcycle/ATV is not properly secured, it may move during transport. If the transmission is placed in gear, shift forks flex under the load and weight of the motorcycle as it moves. Same goes with the clutch and drive chain. These parts are easily damaged. Place the transmission into Neutral and properly secure motorcycle with quality tie-down straps.
