Hi all,
hoping someone with some experience with these 670s can help.
I picked this thing up last spring.
Its in pretty good shape.
It has about 4100 miles on it.
This is my "brother in law sled," so it doesn't have to be perfect.
I just don't want to dust the engine due to improper settings.
I know the engine has had work done, since the green base gaskets stick out.
(Betting Rotax wouldn't let it leave the factory like this.)
I don't know what was done; guessing top end.
It pulls over hard; like all 670s do.
Has 130 PSI each cylinder.
Stock jets are PTO 310 MAG 290, which is correct from the small research I have done.
Plugs are the BR9ES, which I think are correct as well.
It has a single PSI stinger pipe with a can on it.
DO I need to change the jets out or plugs?
I found that PSI is no longer in business when I was looking for info.
It seems strange to me jetting/plugs weren't changed when the exhaust was modded.
I didn't really run hard when I bought it because there wasn't much snow, but seemed to run fine.
It looks like it has an EPI Performance Trail Clutch kit in it too.
Springs are newer, blue and red, same ones that Dennis Kirk sells.
I know this may not affect the carbs, but all of this together..............
I don't have any of the stock parts, so that isn't an option.
This is the first older Ski doo I have had.
With other sleds I usually didn't mess with
stuff for fear of burning up the engine.
This one was a deal.
If anyone has any advice,
Thanks in advance!
hoping someone with some experience with these 670s can help.
I picked this thing up last spring.
Its in pretty good shape.
It has about 4100 miles on it.
This is my "brother in law sled," so it doesn't have to be perfect.
I just don't want to dust the engine due to improper settings.
I know the engine has had work done, since the green base gaskets stick out.
(Betting Rotax wouldn't let it leave the factory like this.)
I don't know what was done; guessing top end.
It pulls over hard; like all 670s do.
Has 130 PSI each cylinder.
Stock jets are PTO 310 MAG 290, which is correct from the small research I have done.
Plugs are the BR9ES, which I think are correct as well.
It has a single PSI stinger pipe with a can on it.
DO I need to change the jets out or plugs?
I found that PSI is no longer in business when I was looking for info.
It seems strange to me jetting/plugs weren't changed when the exhaust was modded.
I didn't really run hard when I bought it because there wasn't much snow, but seemed to run fine.
It looks like it has an EPI Performance Trail Clutch kit in it too.
Springs are newer, blue and red, same ones that Dennis Kirk sells.
I know this may not affect the carbs, but all of this together..............
I don't have any of the stock parts, so that isn't an option.
This is the first older Ski doo I have had.
With other sleds I usually didn't mess with
stuff for fear of burning up the engine.
This one was a deal.
If anyone has any advice,
Thanks in advance!
