Pull start not engaging

[Purrfect1]

On my Yamaha 25, the pull start will not engage. The cord pulls all the way out and will not turn the engine over.

I have removed the top part where the cord start is situated, and there is a white plastic cog held by two "springs" (I think) that in turn are attached to a central disk that will move a bit both clockwise and anticlockwise.

I think what happens is that when you pull the starter cord, the centrifugal force moves the white cog/lever outward and thus engages the grooved disk on top of the motor that will then turn the motor and hopefully start it.

However I can pull the cord all the way out and it is a free pull....the motor never turns over.

The white cog/lever seems to have a default position in to the center of the dsk rater that outward where it would engage the disk that turns the motor.

I have greased, oiled all parts of the white cog/lever, spring and disk assembly but the white cog/lever remains "inwards". There does not seem to be anything preventing it moving to the outward position, but it seems there is also nothing making it move outwards.

Can anyone tell me what I am missing please?

[rodbolt17]

its friction operated.
sounds like either some one reassembled it wrong or the bolt and lock nut are loose.
that center part does not turn with the rope guide.

[Purrfect1]

Thanks Rod.....

It was working earlier today and then just stopped working.

When you say the center part does not move, there are two center parts. There is a black plastic part that looks secure, but slotted onto the black plastic part is a stainless steel ring to which two solid wires with a circle in are attached. This s/s ring will move about 30 degrees both clockwise and anticlockwise.

Are you saying that this s/s ring should also be fixed and stationary?

Thanks
John

[rodbolt17]

the ring should not move, just the spring and the pawl.
the center part that is retained with a bolt and a locknut should NOT move.
its FRICTION operated NOT centrifugal.
as the sheave starts moving the center stays stationary and the friction in that grove the spring rides in pulls the springs moving the pawl out.
it reverses when to let it recoil.

[Purrfect1]

Brilliant.....Thank you so very very much!

A perfect description of what was going wrong my end and tightening the center nut did the trick. I had spend hours and hours trying and failing to figure out what was wrong.

It's made my Christmas, and a very Happy Christmas to you!

[rodbolt17]

make sure that center part is centered in its notch.
it only fits correctly 1 way.
if not correct its going to do it again at a minimum and possibly damage stuff at worst.
once the bolt is tightened roll it over and tighten the lock nut.