I have a 1977 suzuki motorcycle the starter will not engaging.?

Answer 1

Does the starter "spool up" when you hit the button. Because if it does then the issue is the bendix. I don't know off the top of my head if your model which isn't listed in your question has a remote bendix, if it does then replace it. Simply remove the starter and in some cases the case on one side and most remote bendixs' will just slide out. If you do not have a remote bendix then it will be on starter and you will probably have to replace the whole unit.

Answer 2

Always give year, make, engine size and model # when asking questions. We can give you a more detailed explanation with that info.
Your problem sounds like the "starter clutch" is worn out. A common problem, even with new bikes. If you can hear the starter spin when you push the starter button, but the engine won't turn over, then that's the problem.
This is what a starter clutch looks like -
http://www.bikebandit.com/partsbandit/OEM-Parts.asp
Go to Suzuki, 1977, GS550B, Starter Clutch.
--The starter clutch is inbetween #4 & #11 and connected to the crankshaft.
--When the engine is running the starter clutch spins freely on the protrusion of gear #4.
--When the engine is off and the starter button is pushed, the starter motor turns the big gear #4.
--Since the starter clutch only turns freely in one driection, the rollers #5 grab the protrusion on gear #4, trying to prevent it from turning.
--The starter motor has so much torque, when it turns the big gear, the crankshaft turns because the starter clutch is grabbing hold of the protrusion of the big gear.
--The starter clutch and the gear should be changed as a set when the starter clutch goes bad.