Jonsered 6-Something?

[Shennon]

Hello all! I was given this Jonsered and I'm having trouble nailing down exactly what it is without pulling the jug. Has compression, but runs a bit rough. What throws me is the air filter, which from what I see on the net is from a 670, but the carb might be a 630? Intake manifold from a 625? The tag is missing, so that doesn't help. I want to either get a carb kit, or the right carb before rebuilding it as it sat in a corner for years before I received it. Any info is greatly appreciated, thanks!

 

[82F100SWB]

I can say for certain that you do not have a 630.
The 625 and 670 use the same boot
It, but I think if you have no sign of an impulse line you have a very early 670 with impulse through the boot.
The carb kit is the same for all of the carbs on this chassis though; RK-23HS.

 

[Cantdog]

I can say for certain that you do not have a 630.
The 625 and 670 use the same book
It, but I think if you have no sign of an impulse line you have a very early 670 with impulse through the boot.
The carb kit is the same for all of the carbs on this chassis though; RK-23HS.

Ditto......

 

[Shennon]

Thanks guys! Was hoping for 670, but 625 or 630 would have been great! Thanks again!