t509 maintenance

Dusting off.  Service, insurance, tax, MOT.

Oil, filter.  Fuel filter.  Plugs.  Coolant change (it's leaking).  Brake fluid?  No, see how they feel first.
Tyres?  Not unless needed.  Chain?  Remove, clean, regrease.  Pads?  Probably don't need it.

Oil + filter
Spark plugs
Air filter valve clearances
Rear linkage strip and re grease
Rear eccentric hub strip and re grease
Brake fluid change 

Air filter valve clearances?  Not sure about that.  Check the Haynes manual.

Plugs:  http://www.triumphrat.net/speed-triple-forum/122255-t509-spark-plugs.html says,

DPR8EA-9 for 1997 to 2001 engines.  About 2.50 each on ebay.
Or the iridium version: DPR8EIX-9.  6 quid each on ebay.

Cheap ones ordered!

http://tuneecu.com/TuneECU_En/system_Speed_Triple_T509.html