1997-2001 Honda TRX250 Fourtrax Recon Service Manual, Page 52Get this manual
MAINTENANCE ENGINE OIL CHANGE
If the engine must be running to do some work, make sure the area is well ventilatedNever run the engine in an enclosed areaThe exhaust contains poisonous carbon monoxide gas that may cause loss of consciousness and may lead to death Run the engine in an open area or with an exhaust evacuation system in enclosed area
Warm up the engine NOTE :
Change the engine oi with the engine warm and the veh ic le on leve ground to assure complete draining
Sto the engine and remove the oil filler cap ipstick and drain boltDrain the oil completelyCAUTION :
Used engine oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periodsAlthough this is unlikely unless you handle used oil on daily basis, it is still advisable to thoroughly wash your hands with soap and water as soon as possible after handling used oil