- Motor Oil (Which oil is best??)
- Motorcycle Oil FIlter cross-reference chart
- If I buy a Nighthawk 650 what can I expect in terms of maintenance?
Other than that, the only known issue that might be worth reporting is that the cam chain tensioner spring tends to lose some of its tension, allowing some cam chain noise after a while. I don't know anyone who's actually had one come apart, but I guess it can get pretty irritating. My 650's got around 23,000 on it with no issues (and it was really abused before I got it, for the first 11k).
Grand Blanc, MI
- Malfunctioning Neutral Light on Nighthawk 650
Note: The following question and response was taken from a Honda Nighthawk discussion group. It was a reply to someone desiring repair help on a Nighthawk 650.
I just purchased a 1983 CB650SC Nighthawk. I like the bike, but not its neutral indicator light. Not only does the light come on when the bike is shifted into neutral, but it also comes on when the clutch is engaged in any gear! Quite maddening! How can I get the indicator to come on only when I shift into neutral?
Rider in Boise, Idaho
Just last week we just solved this exact problem on someone else's NH. The cause is either the diode (Honda calls it a silicon rectifier) or the wires that go to it. You will probably need to replace the diode, which is a small black box that plugs into a two-wire plug beneath the seat / tank junction on the right side, or inside the right side cover. You will need a continuity tester, such as a VOM.