Now the technical questions....Jonsered 2159

[IBwoodtick2]

Morning,

A couple of questions regarding the 2159......

The manual states you should grease the needle bearings on the cluth assembly weekly if the saw has a fulltime job.
Can someone walk me through the procedure to remove the outboard clutch on this unit.

Also, I've looking around for the tech manual online but haven't run across a site that offers them....anyone have thoughts on where I could locate the shop manual? John

 

[Mange]

You simply press the grease in the crank, there is a hole to lead the grease to the needle bearings on the clutch.
This require a pointed grease gun, you can get it and proper grease at your dealer, or other HVA/Jonny Dealer, I would think they could show you how as well.

 

[HiOctane]

IB,go there.

http://weborder.jonsered.com/order_static/doc/JWEN/JWEN2003/JWEN2003_1088874-26.pdf

 

[HiOctane]

You simply press the grease in the crank, there is a hole to lead the grease to the needle bearings on the clutch.
This require a pointed grease gun, you can get it and proper grease at your dealer, or other HVA/Jonny Dealer, I would think they could show you how as well.

Mange,im quite sure there is no hole on the crankshaft end of 2159.I have to verify.

 

[Mange]

Mange,im quite sure there is no hole on the crankshaft end of 2159.I have to verify.

Yes, please do that.

Ask if the crank is the same for 357 too.

 

[HiOctane]

Yes, please do that.

Ask if the crank is the same for 357 too.

They have th same crank EXCEPT the 357 got "full circle" added on it.You can remove those "full circle" just by prying them off the crank.They are made of rubber with a kind of steel circle around it .When reomved,you now have a 359 crank.Voila

http://weborder.husqvarna.com/order_static/doc/HIPL/HIPL2005/HIPL2005_5440453-01.pdf

 

[Blowdown1]

I would assume the 2159 has the same crank as the Husky 359. If so, as Mange said, use a pointed grease gun to lube the bearing via the hole right in the center of the clutch.

Now, can someone tell me just what a full-circle crank is? I can't find anything that actually describes that.

 

[HiOctane]

I would assume the 2159 has the same crank as the Husky 359. If so, as Mange said, use a pointed grease gun to lube the bearing via the hole right in the center of the clutch.

Now, can someone tell me just what a full-circle crank is? I can't find anything that actually describes that.

Look the adress in my preceding message,go to the crank pic,you will understand.Full circle crank brings crankcase compression higher by reducing the crankcase volume.Its a performance related.

 

[Mange]

Mange,im quite sure there is no hole on the crankshaft end of 2159.I have to verify.

There is a hole on my 357, and that has the same crank as you admitted.

 

[Blowdown1]

So would there be any way to add the full circle "things" to a 359 crank? I would assume it is not that simple. Is the stroke on the 357 shorter than the 359 or is it the bore that is smaller?

 

[HiOctane]

So would there be any way to add the full circle "things" to a 359 crank? I would assume it is not that simple. Is the stroke on the 357 shorter than the 359 or is it the bore that is smaller?

357:bore 46 x stroke 34mm
359: 47 x 34 mm
Same stroke,same crankcase,same crankshaft w/o the full circle.You can install them on your 359,they fit thight on crank weights,but i dont know if its worth because 359 has diff porting .

 

[ehp]

leave the bells off of the 359 , once ported the 359 is just as fast as a ported 357 or just maybe a touch faster than the 357 cause the 359 has more torque than a 357

 

[Blowdown1]

EHP, have you ever tired a full-circle crank in a 359 AND ported it? Or is it a matter of the porting on the 357 being so different that it wouldn't achieve the intended results?

I don't know enough about 2-stroke engines to really know how closed loops, crankcase volume boosting compression, etc all contribute to the end result; POWER.

 

[ehp]

the problem with full circle cranks in a chainsaw is that the crankcase to so small to start with and the full circle just makes them have a smaller volume .
The problem with this small volume is you cannot get as much air into the crankcase because of the full circle crank , no air , no power .
one thing that is good about full circle cranks is with no air you donot need as much fuel.
I am going to take the bells off my alcohol 357 and see if it gets anymore power which I am sure it will