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Discussion Starter · #1 ·
I currently have a 1981 Kawasaki kz440 and have been having an issue where after shifting into 2nd the bike will shift itself back down to neutral about half way through the gear. Any ideas what might be causing this? It only does this occasionally not all the time. Thanks in advance!
 

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Ace Tuner
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3,494 Posts
Could be a problem with the shift drum where the "roller arm thing" and / or the detent is worn, chipped or otherwise screwed up allowing it to slip out of 2nd gear. Those parts can be accessed without splitting the engine case.
Unfortunately the most likely cause would be worn or broken dogs on gears in the transmission or possibly a bent shift fork.
You have to split the case to fix that.

S F
 

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Wot Semi said. Many riders rest their foot on the shifter, or are excessively heavy stomping on it. Worn and bent forks can happen. The dogs in the gears always get worn after many years. You need to put your brain in the kid that first rode those bikes. Rev it until your teeth chatted, then shift.

UK
 
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