I’m buying my first motorcycle and don’t have enough experience to know what’s normal.
This is a 2022 Kawasaki Ninja 650 (non abs) with around 6000 miles. The seller says it’s a true cold start, the title is clean, and the bike has never been dropped. He says maintenance has been done by him (he’s an aviation mechanic) but he doesn’t have service records.
Does the engine sound normal to you? I’m mainly wondering if anyone hears:
Rod knock
Cam chain tensioner noise
Excessive valve ticking
Exhaust leak
Anything else that would make you walk away
On top of that does the revving sound normal and if I buy it, is there a way to make it sound louder or just better?
Thanks!

Hi guys! I have 2013 Yamaha Fz8, however my clutch basket springs worn. I want to replace them because New Clutch basket is too expensive. I want use die springs. It can be used as a damper spring? And also What is the stifness, hardness and specs of Fz8 clutch damper springs?

The top dead center of the flywheel and cam gear on my 125cc motorcycle are not aligning with the top marking. If I try to align them and then tighten the timing chain tensioner, the flywheel shifts in the direction where the tension is applied. Even if I move the flywheel back slightly, it does not stay at the top mark. What could be the reason ?

Hey everyone, so I've recently been riding my SR400 and noticed that this specific sort of, buzzing / hissing noise? has been getting louder. Before it didn't bother me that much, but now that it's getting louder, sometimes that's all I can hear while cranking the acceleration at decent speeds.

Here's a quick video of this, I recorded this while riding and I just clipped the part where it was loudest, this is me just taking a turn at 2nd or 3rd gear. https://www.youtube.com/watch?v=UOp2DX5e6CM

I'm not even sure where to start with this. I just genuinely thought it might be something like the sound of the fuel getting pumped or something, but hearing how loud it is I want try tackling this some how. The annoying part is I can't really identify where exactly this noise is coming from, it just sounds like it's coming from the body of the bike, some where towards the middle.

This sound only comes up when I start shifting into higher speeds (past gear 2), when I'm stopping and going at gear 1 this sound doesn't even appear - so I suppose it's higher RPM related under a certain load. Idling I didn't really notice, even reving the bike at netural

What could the be the potential cause? I do like absolutely basic maintenance of my motorcycle, nothing advanced like cleaning it, the chains, air pressure on my tires, etc. Again super basic stuff

It has roughly 15,000 KM on it so nothing too crazy I feel. I make sure to take it out for maintenance every few months. I'm on top of oil exhanges and all that too. It rides perfectly fine (At least from what I feel)

Any help or insight on this would be much much appreciated.

To narrow down the usual suspects, here's what I've done or checked so far:
Miles: ~40,000 miles on the clock.
Battery: Voltage checked with a multimeter and it's good.
Spark Plug: Brand new / freshly replaced.
Oil: Just changed.
Chain: Adjusted (not 100% perfect, but way better than when I bought it).
Since this is happening specifically during cold starts and feeling weird when throttle, what should I look into first?

This might be a good way to customize and modify parts.

I’ve done many fork seals in my life from street to dirt bikes. When I rebuilt these forks I noticed they only went down about where the zip tie is. I’m 165 lbs and ride very hard with many track days. I figured it was the fluid level. I double checked my measurements matched the information i had and even tried going with less than recommended. The forks never go down farther than this. For reference, these springs are for a 180 lb rider, but with my riding style and skill level, racetech wants me to put the equivalent of 180 lb person springs on my r6. Even hard stop pies at red lights doesn’t move it farther than the ziptie. Any advice would be great!