Opinions on the Suzuki DT140 TC engine

[Rokraider]

I am currently running one of these on my RIB and know nothing about them, other than it has a healthy appetite for fuel. It is a 1999 fuel injected, oil injected model. It runs very sweetly and seems to go quite well. I am curious as to their reputation, are they a reliable engine, any weaknesses I should be checking for?

Thanks.