This may be an easy fix. The problem Im having is when I hit the starter button the starter gear engages and turn the motor over but as soon as it makes a full revoloution, somtimes less, the started just spins. I have to wait for it to spin down to try to start it again. I removed the solonoid-starter gear housing to replace the bendix gear, but I didnt find anything wrong w/ it. any advise. The guy I bought the bike from didnt put a starter relay on. The starter button goes directly to the solonoid and it used to turn and turn before.

 

slug.....From what you describe, it sounds to me like the problem is in your solenoid. It is failing to keep the gear engaged. If the starter worked before without a starter relay, then as long as the solenoid is working it should turn the engine over.
If it were me, I would install that starter relay. All this does is activate the ground circuit, but a proper hook up is to use the relay. I recommend that you install the relay, wire it up as shown on the wiring diagram, and then look again at the solenoid.

 

thanx piniongear. I thought the same thing so I did that a few months back. I found one at a swap meet and it was doing the same thing. So I bought a brand new one and it was doing the same thing. I only thing I can think of is the gear that is actually in direct contact with the starter. When I took the assembly off I noticed that it was stationary. Shouldnt it float w/ drive gear? I havent had a chance to take it to a specialist to show them due to work. Maybe Ill get a chance this week. Ill also get that relay.

 

slugbug.....You are talking about the pinion gear will not move? This is the gear that mates up with your clutch gear when you push down the start button.
1)You push down the start button.
2)The solenoid armature shaft pulls the shifter lever.
3)The fingers on the shifter lever engage the groove in the shifting collar, which forces the pinion gear to engage with the clutch ring gear, and then the engine turns over. If this pinion gear on yours is stuck on it's shaft, then there is your problem.


When the engine starts and the start button is released, the spring on the solenoid shaft moves the fingers back causing the pinion to disengage with the ring gear, and the starter motor shuts off. There are matching spiral threads on the starter shaft and the pinion gear so that the pinion will shift if the teeth do not line up with the clutch ring gear when the starter is first engaged to start. If the starter button is held down after the engine starts, the pinion gear will turn freely by means of over running clutch to prevent damage to the starter.
That's the long and short of it. Like I say, that pinion gear has to be free sliding on the shaft. Hope this helps. Let me know what you find out.

 

Another thing you might want to replace is the 30 amp circut breaker off the battery. I was having a multitude of starting problems ( to include something similar to what you have) and I replaced the circut breaker and ALL of my starting problems went away. Tearing apart the old circut breaket revealed the contact points to be corroded and not allowing full voltage to the starting system. It is possible the previous owner was experiencing a voltage drop and bypassed the starter relay to send full power to the solonoid and never considered the circut breaker as the full 12 VDC of battery voltage has to go through the breaker contact points upon starting and any corrosion on them will cause resistance - and starting problems. Also make sure all wire spades are clean and tight upon reassembly.