1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 169Get this manual
REAR SUSPENSION '86:
Install the connecting tube lair cleaner case-to-carburetor) and tighten the connecting tube bandsAfter '86: Install and tighten the washer and resonator mounting nut securelyNOTE
Route the oil hose properly (page 1-11 and 14)
After '86: .11
Install the rear skid plate with the four bolts and washers