Honda 250SX Starter Trouble

[kdagenais]

I have a 1985 Honda 250Sx that I am having starter troubles. It is breaking teeth on the starter reduction gear repeatedly. I have been through about 8 gears in a short time frame. There is obviously something more than meets the eye but I cannot figure out where to begin. Any help somebody can give me it would be greatly appreciated.
Thanks In Advance,

[jeswinehart]

i had the nose cone bearings go out on my starter ( bigred) and it frozze up. i could see where if they had disinigrated it would still turn over but have so much slop that it might chew off the gears it engages.
i had to go to a bearing speacilty shop for the bearings,,, weren't exact but very close + works.

anybody else got any ideas ???

john

[Dirtcrasher]

I have a 1985 Honda 250Sx that I am having starter troubles. It is breaking teeth on the starter reduction gear repeatedly. I have been through about 8 gears in a short time frame. There is obviously something more than meets the eye but I cannot figure out where to begin. Any help somebody can give me it would be greatly appreciated.
Thanks In Advance,

Behind the rotor there is a one way clutch that allows the starter to freewheel when the motor starts - could be freezing up ever so often or just stuck.

[broook]

When you shut her off, does it spin and bring up with a clunk or bang?

If so it is your starter clutch located behind the rotor. It is a one way bearing that stops the engine kicking back on the starter reduction gears and the starter. It is starting to be a common problem now on the 85-87 250. I have replaced a half dozen now in the last few months. All on 85-86 Big Reds

[kdagenais]

Hello Broook,
Yes it does make a clunk sound when you shut it off. My question now is what part of the starter clutch will need to be replaced and is there anything else that should be replaced while I am at it.
Thank You,

[Howdy]

I have a 1985 Honda 250Sx that I am having starter troubles. It is breaking teeth on the starter reduction gear repeatedly. I have been through about 8 gears in a short time frame. There is obviously something more than meets the eye but I cannot figure out where to begin. Any help somebody can give me it would be greatly appreciated.
Thanks In Advance,

I am guessing when you shut the motor off you hear a wineing noise coming from the right side of the motor. You may also hear a "clunk" and the wineing stops.
Also, You probably would have a hard time trying to pull start or kick start the motor.
Am I Correct?

If this is the case then you need to replace the "Clutch, one-way".
Honda Part Number 91101-HA0-004
Honda Description: CLUTCH, ONE-WAY
Sugested Retail $91.42
www.Partsfish.com price is $81.43
www.servicehonda.com price is $66.87

This part is in the right centrifical clutch assembly on the right side of the motor. I have attatched a diagram of the clutches to help you locate it. It's part number 25. I have seen this same part go bad on at least 20 machines ( if not more ). This is One-way clutch clutch does many functions. It works to grip the crank shaft when trying to kickstart it and or pull start it. It also works to stop the motor from spinning backwards when shut off or during a failed start.
If the motor kicks backwards even a little when trying to start it or when you shut it off you will damage the starter gears.

Just for the record ( I'm not trying to start a argument here ): If the "Clutch" for the starter ( on the left side of the motor ) is bad the electric starter motor will just spin. It will not start the motor. If it's bad and the motor kicks back it won't engage thus the starter gears will not get damaged. The only way possible for it to damage the gears is if it locks in the engaged possition. Or someone installed it wrong. This clutch Only is used for the Electric starter. Thus it doesn't get as much wear as the " Clutch one-way" on the right side.
In 13+ years of working on 3 Wheelers ( Well over 50 250sx's & 250es BigReds ) I have never seen one of these ( left side clutch ) go bad.

I hope this helps. Peace!!
Howdy

[broook]

Hi Howdy.

I don`t know how to answer that one. All I can say is that the "alternator clutches" I replaced have stopped the spinning and clunking after shut off and the "clutch sprag" has cured clutch slippage when going down hill slowly with a load of wood on. Also the "clutch sprag" cured kickstarter slippage problems.
I am allways willing to learn though, but just going by my past experiences.

[Howdy]

Hi Howdy.

I don`t know how to answer that one. All I can say is that the "alternator clutches" I replaced have stopped the spinning and clunking after shut off and the "clutch sprag" has cured clutch slippage when going down hill slowly with a load of wood on. Also the "clutch sprag" cured kickstarter slippage problems.
I am allways willing to learn though, but just going by my past experiences.

Not a problem. I wasn't trying to say you were wrong. I am just going by how they work. If it worked for SUPER!!! If you need any Flywheel side clutches let me know. They are like $150+ from partsfish.com . I would sell mine way less.

[kdagenais]

Hello Howdy,
That sounds like another possiblity cause the kick starter fails to engage corectly also. When you try to kick start it only grabs at the beginng and then lets go as soon as you apply pressure. I thought this was a matter of the spring on the kick start assembly installed incorrectly. Is there any way I can check the one way clutch to know if is deemed a bad part before a buy unnecessary parts?

[broook]

Hi Howdy.

Will keep in touch on prices. Problem being exchange rate, [Canadian], postage, and customs duty. Sometimes everything is thrown way out of wack. Just like the clutches.

[Dirtcrasher]

Hi Howdy.

I don`t know how to answer that one. All I can say is that the "alternator clutches" I replaced have stopped the spinning and clunking after shut off and the "clutch sprag" has cured clutch slippage when going down hill slowly with a load of wood on. Also the "clutch sprag" cured kickstarter slippage problems.
I am allways willing to learn though, but just going by my past experiences.

Not a problem. I wasn't trying to say you were wrong. I am just going by how they work. If it worked for SUPER!!! If you need any Flywheel side clutches let me know. They are like $150+ from partsfish.com . I would sell mine way less.

Howdy, I took apart the rotor side one way which seemed to work fine - but when I took it off and cleaned it, all those little oblong pieces started to fall out - is that due to wear or do they just do that when there not installed with something holding the inside diameter in there?? Thanks for any help

[broook]

Hi Kdagenais.

In your first post you did not mention the kickstart slipping. :oops:

Now you have to go to the clutch sprag to fix that one. Behind the centrifical clutch.

One for you Howdy. :-D

[kdagenais]

Hello All,
After further investigation I am going to start with the one way clutch (Clutch Sprag). I ordered the parts thought Service Honda. I can not believe the price differnece between them and anybody else (Dealer included). I will let you all know how it turns out when I get it back together.
Also would like to Thank everyone for the information cause I had no idea where to begin. Just wanted to say that is my first post since I signed up on this forum and am impressed with the info within. It is great to have a place where you can go to get good information to help you solve a problem. Cause lord only knows we aren't all rich and can afford to take our bikes to shop to get fixed at a $45 (plus in some cases) an hour labor rate.
Thanks Again,

[broook]

It is great to have a place where you can go to get good information to help you solve a problem. Cause lord only knows we aren't all rich and can afford to take our bikes to shop to get fixed at a $45 (plus in some cases) an hour labor rate.


Oh so true. Thats why most of us try to fix our own. If you have to take it to a dealer everytime something goes wrong it is just as well to give him the machine and go look for another one.
Yes this is a great board for info. :-D
I also own a Honda 6 cylinder CBX motorcycle with 24 valves and 6 carbs. if I didn,t do my own work I would have to take it off the road. :?

[Howdy]

Hi Kdagenais.

In your first post you did not mention the kickstart slipping. :oops:

Now you have to go to the clutch sprag to fix that one. Behind the centrifical clutch.

One for you Howdy. :-D

I just mentioned it because it helps figure out what the problem is. I don't count the "Who's Right" any more. Just as long as we help find the problem!!

It is great to have a place where you can go to get good information to help you solve a problem. Cause lord only knows we aren't all rich and can afford to take our bikes to shop to get fixed at a $45 (plus in some cases) an hour labor rate.
Thanks Again,

Don't talk too loudly, You haven't recieved our bill yet. lmao j/k

Howdy