petrol in oil?

[keno]

Bike has been smelling heavily of fuel when starting the bike the last few months,anyway due to work not had much time to look at it.
Took the plugs out and stunk of petrol,oil filler cap is full of emulsion and stinks of petrol,also went into town on bike 3 mile journey all round and engine was a lot hotter than usual.Stuck finger through oil filler and scraped lots of emulsion on inside of clutch casing,scared to take it off and look now.. :eek


Any ideas?