Jonsered chainsaw help. 70e 621 49sp

[DisturbeD]

I'm looking for the right tool to remove some or all of the clutches and flywheels for these saws. I currently have a 70e and 621 and 49sp and they all look to have very similar clutches and don't look to come off like I'm use to removing clutches on Husqvarna and stihl and others. Would like to buy the right tool to make dealing with these much easier. So any help would be appreciated.
The 1st picture was/is a 70e and the 2nd is I believe a 621.

 

[Bret4207]

IIRC there was a 3 pin doohicky that sat down on that you could get a wrench on. Been 40 years...

 

[Cantdog]

I made this one and it does all of the old Jonsereds clutches and flywheels


A guy in the Jonsereds Sticky made this one.......says it does the same ...much nicer than my homemade one but I haven't actually tried it yet, but don't doubt him.

 

[Cantdog]

A word of caution when pulling flywheels especially on the 70E. Whatever bolts you thread into the three holes in the flywheels, do not thread them in deeper than the thickness of the flywheel face as the ign module or points are very close to the back (inside) of the flywheel and can be damaged by using to long bolts

 

[DisturbeD]

A word of caution when pulling flywheels especially on the 70E. Whatever bolts you thread into the three holes in the flywheels, do not thread them in deeper than the thickness of the flywheel face as the ign module or points are very close to the back (inside) of the flywheel and can be damaged by using to long bolts

Thanks for the information.

 

[GusGus2020]

For the clutches - was working on an older Homelite that had a similar setup. Find some steel rod that matches the diameter of the holes, cut it into lengths about 1 inch each, stuff some rope into the cylinder as a piston stop, and use a large, sturdy screwdriver as a lever on two of the pins to get it to spin. Worked like a charm.

 

[Cantdog]

For the clutches - was working on an older Homelite that had a similar setup. Find some steel rod that matches the diameter of the holes, cut it into lengths about 1 inch each, stuff some rope into the cylinder as a piston stop, and use a large, sturdy screwdriver as a lever on two of the pins to get it to spin. Worked like a charm.

That can work on some saws but not the ones the OP listed. These clutches are not threaded to the crankshaft but have a taper and keyway held on buy a left hand tread nut......they need to be pulled straight off.....

 

[Chevboy0167]

What Cantdog said......

https://www.ebay.com/itm/3516373039...Vw9TLTR/gHD3Tq4COAA7Dhd6g=|tkp:Bk9SR-SD3dCdYQ