Working on a Yamaha for a Good Friend

[Getter-Done]

I have decided to go ahead and replace the crank seals.

I ordered a clutch pulling bolt to make the job easier.

If this doesn't help I guess I will pull the jug next.
seal.jpg

bolt.jpg

[mikeasis]

hard to tell by the pics but it looks like the exhuast has the cross over tube and that would make it an 82 J17 engine. 80-90 psi is perfect copression.

this engine has a few odd parts so beware of that. it uses different reed cage and reeds as well as cylinder, head and of course the exhaust. it does use a different carb as well, but the only i belive its just jetting that is differnt.

look at of the fan side of the motor on the case next to the carb rounded portion of the case that contours with the fan shroud there will be a serial number there. if it starts with J17 is the odd 82

[Getter-Done]

Originally Posted by mikeasis

hard to tell by the pics but it looks like the exhuast has the cross over tube and that would make it an 82 J17 engine. 80-90 psi is perfect copression.

this engine has a few odd parts so beware of that. it uses different reed cage and reeds as well as cylinder, head and of course the exhaust. it does use a different carb as well, but the only i belive its just jetting that is differnt.

look at of the fan side of the motor on the case next to the carb rounded portion of the case that contours with the fan shroud there will be a serial number there. if it starts with J17 is the odd 82

Thanks for your info.

I can get better pictures

Yes It is the 82 odd ball

I learned about the reed cage $11.oo the hard way.

The serial is J17__--------

[Getter-Done]

.
Here is the engine serial#
j17.jpg



.

[mikeasis]

Originally Posted by Getter-Done

Thanks for your info.

I can get better pictures

Yes It is the 82 odd ball

I learned about the reed cage $11.oo the hard way.

The serial is J17__--------

it may be an odd ball but once sorted they are good little engines like the rest of them.

do you need a reed cage. i have a new one with boot

[Getter-Done]

Originally Posted by mikeasis

it may be an odd ball but once sorted they are good little engines like the rest of them.

do you need a reed cage. i have a new one with boot

I missed this post
I may need that reed cage.
Let me know a price please.
I will get with my friend and I am sure he will be okay with it

I will post where I am at now with the project in the next post.

Thanks for your help


......

[Getter-Done]

.Tore it down to the seal.
seal123.jpg

Made a Plate to pull the seal.

seal1.jpg

Use 4 screws to pull it out.

seal2.jpg

here is the seal out.

seal3.jpg

Found a bare wire touching the frame when tearing down the flywheel side.
I don't know what this wire goes to yet

seal4_LI.jpg


...

[mikeasis]

Originally Posted by Getter-Done

I missed this post
I may need that reed cage.
Let me know a price please.
I will get with my friend and I am sure he will be okay with it

I will post where I am at now with the project in the next post.

Thanks for your help


......

id take $50 shipped for the NOS reed assembly with boot

ill shoot you a PM

[mikeasis]

Originally Posted by Getter-Done

.Tore it down to the seal.
Attachment 222441

Made a Plate to pull the seal.

Attachment 222442

Use 4 screws to pull it out.

Attachment 222443

here is the seal out.

Attachment 222444

Found a bare wire touching the frame when tearing down the flywheel side.
I don't know what this wire goes to yet

Attachment 222445


...

hard to tell by the picture but looks like a stator wire

[Getter-Done]

Originally Posted by mikeasis

id take $50 shipped for the NOS reed assembly with boot

ill shoot you a PM

Pm sent.
I will take it.

I will put a spilce on that wire and tape it up good.

Thanks for your help