I dont know if you use the foot brake but Id reccomend wrapping the adjustment screw for it in teflon tape and then tightening it, mine backs off every time I ride it. Also if you take it in the mud, its at least worth pulling apart the back brake and checking the drum O-ring and hub seal. Those like to leak, which ruins your brakes. If there good then smear them with some heavy duty tractor grease to help seal out water. If there dry rotted you can buy brand new ones from suzuki for $80 for each. The back brake is the downfall for it. Nothing else will ever fail you, and if you clean out that drum once a year and re apply grease you should never have brake problems.
Rides
1986 Honda 250sx
1982 Kawasaki KLT 250
1983 Honda 110 (sold)
1995 King Quad 300 (traded)
1983 Honda 185s (sold)