i own a 92 nighthawk and the oil filter is on the front of the engine with a fin cover over it. the air filter is behind the left side cover. you have to remove the seat to get to it. then you'll find a plastic cover with 4 screws. you'll hhave to pull a strip thing from the bottom of the filter and it will come out. hope this helps. wild willy.
firing order 1984 650 nighthawk
a Honda nighthawk can get up to around 500-600mph i had mine going 650 w/nos
Location of the fuse box on a 85 honda Nighthawk 650 sc
under the head light right behind the horns (front of the bike)
How much engine oil does a 1982 Honda Nighthawk 650 take? 3.4 quarts
www.bikebandit.com http://www.bikebandit.com/houseofmotorcycles/honda-motorcycle-cb650sc-nighthawk-650-1985/o/m9659
60 Hp
3 liters.
2.5 with filter change.
10w-40 specifically for motorcycles.
Needle valve in the carb. bowl not closing.
SAE 10w30 full synthetic.