If the standard heat/ penetrating oil methods aren’t working try taking a torx bit or a triple square that will catch the rounded hole on a hand impact driver and give that a couple taps while turning... if that doesn’t work I’d pull the side cover and ... more »

Like I mentioned above you need to measure actual peak voltage coming from the stator... a low reading could indicated a bad stator, or a rotor/ flywheel that’s become weak (which is rare)... you can also measure output voltage from the pulse coil but ... more »

You need to measure peak voltage coming from the stator... they sell adapters as most digital multimeters measure the RMS of an AC signal... If you’re semi electrically savvy you can make your own adapter fairly cheap... As far as the pulse/pickup coil ... more »

That doesn’t look like typical break in marks to me... that looks like foreign material or a partial seizure...

I’ll second the ultrasonic cleaner... have one absolutely love it... it makes cleaning the carbon off combustion chambers and valves super easy...

Vice grips... sometimes you can catch the edge with a sharp chisel and a hammer and tap it out... if all else fails left handed drill bit and an easy out...

Depends how much of a compression change... a timing or fuel mixture change may be necessary to prevent detonation...

If it’s mechanically sound I’d Make sure the injector is clean and the fuel pump is operating at the correct pressure (sounds like a possible fuel pump failure to me or plugged pickup screen/filter)... If they are then it’s possibly a Dirty intake air ... more »

JIS screwdrivers are an absolute must if you work on motorcycles! Or any Japanese product for that matter... Buy a set... you will no longer have to worry about rounding screw heads on float bowls, reservoir caps, side covers etc... The Phillips and

If everything mechanically checks out I’d see if the ECM has any stored codes the procedure is outlined here...in my experience about 85-90% of hot starting issues are attributed to valve sealing or valve clearance

Based off the use of hotcam shims and the shim thickness it would be safe to say it’s been shimmed prior and It’s very possible whoever shimmed the valves prior may have shimmed them incorrectly... You have plenty of room left to shim them and bring ... more »

You need to pull the buckets and check the actual shim size not just the clearance.

How thin are your shims?

Yes, valves tend to tighten over time as the seat and valve wear... On many of the bikes I’ve seen the intake valves tend to lose clearance faster than the exhaust, but this is more than likely caused by poor air filter maintenance...

All the way with a minuscule amount of drag...

This makes more sense I was wondering how a piston that far off even ran... .25mm or .0098” is still too loose!

you’re correct quick math gone wrong... let me correct that...

I believe they’re stainless and stainless will “blue” no problem with a little bit of heat from a small map torch... or even an oxy acetylene...

🤙