how to repair a 500 starter sprag

[hmmmnz]

well if you have a 500 follow this thread to remove the sprag.
if you have the 125 or any other bike with this type of sprag (ducati bmw ect ect) then you'll have to figure how to remove the sprag your self

and way once you have removed the sprag you'll find it looks like this



not to worry it is redeemable, and you dont have to spend a 100quid or a few hundred dollars to buy a new one

running around the circumfrance of the sprag in a groove in the center is a spring


basically lay the sprag flat and dig the spring out


now once the spring is out move the spring around untill you find the join, its the point where one side of the spring screws into the other,
now you have to cut about 1 inch (possibly more depending on how streched the spring is)
you have to cut the spring at the tail end of the spring!! you need the narrow end to screw back into the new cut end





after you have cut the spring then screw the 2 ends back togeather


funtimes, now slip the spring back onto the sprag

jobs a good'un
make sure the teeth (lobes) are all facing the same direction



and thats it. jobs done
nice and easy, time to re-install

[DAVID THOMPSON]

the rt125 sprag does not work the same and when it dies its dead
dave

[hmmmnz]

what sort of sprag is it??
is it the 4 cam type? or something else all together?

[DAVID THOMPSON]

its a whole bunch of tiny fingers that grab if you take a new one all the way apart its dead
if the motor stalls and runs backwards its dead
there is a slip clutch called a damper in book if it freezes up sprag also goes
part 7 is part of 9 in the parts book drawing
pore full of oil and install and pray
it sucks i have killed 3 in 20 thousand miles
if the factory make a new run of 125cc bikes they need to re design that mess
dave
ps
i am looking at the left over parts i have looking at a possible work around
if i come up with something i will publish it ....

[hmmmnz]

have you got a pic of the 125 sprag??