Ok. Top end is off, how do I get piston out? (pictures included)

[nitekrawler]

Son and I (well actually he has done 99%) got the top end off, how do we get the piston out? This is our first top end, so full details would be nice :D Double click the pictures for bigger size

Thanks
PS. See the nice small hole where he is holding the piston :mad:

[C W.]

the hole that runs side ways through the piston.it has a circlip on each side take a tiny screw driver and pry it out then push the wrist pin out with your finger.

[whiteman350x]

In the sides of the piston, there are 2 holes. Your wrist pin goes through these. Up in the holes about 1/2 inch in, there are little wire clips, called circlips. You need to remove one of these and then you can push the wrist pin out. Then the piston is off the rod. There should be a little indention that will let you get under the circlip and pry it up so you can pull it out. You really need to invest in a manual. It is so much easier to see in a manual than someone trying to explain it.

[nitekrawler]

the hole that runs side ways through the piston.it has a circlip on each side take a tiny screw driver and pry it out then push the wrist pin out with your finger.

What is the wrist pin? Sorry. Again, our first time

[nitekrawler]

In the sides of the piston, there are 2 holes. Your wrist pin goes through these. Up in the holes about 1/2 inch in, there are little wire clips, called circlips. You need to remove one of these and then you can push the wrist pin out. Then the piston is off the rod. There should be a little indention that will let you get under the circlip and pry it up so you can pull it out. You really need to invest in a manual. It is so much easier to see in a manual than someone trying to explain it.

Thanks for your help :D

[C W.]

you will love http://macdizzy.com/2stroke.htm that place is all indepth free info and other cool bikes it is a manual.

[nitekrawler]

you will love http://macdizzy.com/2stroke.htm that place is all indepth free info and other cool bikes it is a manual.

Some stuff I understand and some I don't. Local shop wants $90 for piston kit and $22 for gaskets and $35 for bore work. Sound right?

[C W.]

not unreasonable you could shop around and beat gasket and piton prices in catologs but wats 20 bucks. you said it your self you dont under stand every thing.so suport your local mechanic and he will help you back i am sure of it. :)

[Trikeaholic]

Dont Drop The Circlip Into The Bottom End!! Stuff A Rag In There, Around The Rod And Support The Piston On It!!!!!

[nitekrawler]

Dont Drop The Circlip Into The Bottom End!! Stuff A Rag In There, Around The Rod And Support The Piston On It!!!!!


GREAT TIP!!!!

[mike from long island]

buy a manual too it helps alot but always feel free to ask here to good luck

[nitekrawler]

buy a manual too it helps alot but always feel free to ask here to good luck

I 'thought' my daughters came with one. Going to look later :cool:

[Billy Bob]

if you can't find your manual let me know and the toI'll scan pend section of mine... this is for an 81-81 R????

Bob

[nitekrawler]

if you can't find your manual let me know and the toI'll scan pend section of mine... this is for an 81-81 R????

Bob

Yes, 81-82 Atc 250R

Thanks