Burgman 400 /07/
So bike was loosing a bit of power on take off then started a noise like exaust edblowing a b
So re gasket exhaust, still their. So figured head gasket blowing or leaking valve
Chequed clearances, ok
Bit the bullet and pulled it down new head gasket etc
Turns out it was all down to timing chain atsstretched to a point where it was opening and closing valves late
Never seen this on a bike before
Miliage was 32000
Rebuilt with new chain gaskets, running like new
Lukily it hadent burnt the valve seats so relatively cheap fix

Useful information, thanks.

I traded in my 400 last year. Also with 32000 on the clock. Seems I may have been lucky.

I think the op was just unlucky. I've stripped many a 400 of all ages and with much higher miles on the clock (over 88,000 miles in one case and the engine was all original) and never seen that one before. I'd hazard a guess and say the tensioner was faulty and had caused the chain to run too loose over it's lifetime and that's what caused the premature wear. Glad you go it fixed though. Well done!