Questionmy 82 Honda will not turnover or even try to turn. i jumped the starter out of the bike it works i also jumped it in the bike i can hear it run but doesn't turn the motor i am replacing the clutch but shouldn't it start in N. this is my first bike build please help
AnswerTed, the starter circuit has a number of components, starting with a fully-charged, load-tested battery. Then, you have starter motor, starter solenoid, starter/headlight switch, safety switch at the clutch lever (http://www.cmsnl.com/honda-cb450sc-nighthawk-450-1982-usa_model456/partslist/F++... #7), in-line diode, electrical wiring and connectors, plus the starter clutch (inside the motor).
See electrical diagrams at:
http://oldmanhonda.com/MC/WiringDiagrams/MCwiring.php#class
If the headlight comes on when the ignition switch is ON, then goes off when the starter button is pressed, then the handlebar switch should be okay. If not, then start there. The clutch switch plunger should be present. Using a test light, check for power at the solenoid when starter button is pressed in. If so, then the other side of the solenoid wiring/components are at fault.
Normally, the starter circuit should operate if the bike is in neutral (light comes on) and the clutch lever is pulled in, sometimes without the clutch lever.
In re-reading your question and symptoms (if you can hear the starter motor operate and the engine doesn't turn over) then the starter clutch roller springs are probably dead.
http://www.cmsnl.com/honda-cb450sc-nighthawk-450-1982-usa_model456/partslist/E++... #6
You will have to purchase a flywheel/rotor puller tool from a shop or online (K&L or Motion Pro dealers) to remove the rotor from the end of the crankshaft to access the starter clutch springs, caps and rollers. When the springs collapse, the rollers don't keep in contact with the starter clutch and everything just slips around inside, instead of engaging the crankshaft for rotation during the starter circuit engagement.
Bill Silver
