2015 AXYS PRO X Switchback, new top end - bog help

[mickyd32]

Hey guys. I just picked up a 2015 with 1000 miles on it. Has a brand new top end, not sure why I will call the dealer Monday and find out why

I literally unloaded it and put the first miles on it since rebuild and it has a nasty bog when it goes to back shift so I’m thinking it’s clutching related but haven’t got it into my own shop to see what’s what

Thoughts?

 

[Killer Time Racing]

Hey guys. I just picked up a 2015 with 1000 miles on it. Has a brand new top end, not sure why I will call the dealer Monday and find out why

I literally unloaded it and put the first miles on it since rebuild and it has a nasty bog when it goes to back shift so I’m thinking it’s clutching related but haven’t got it into my own shop to see what’s what

Thoughts?

Broken primary spring ?

 

[mickyd32]

It very well could be like I said it's a brand new to me sled
My concern is its an issue of engine rebuild. hopefully not, but it was done by a dealer I have 0 experience with

In looking at the recepits the former owner gave me I see there was an hour of shop time put to cleaning exhaust valves Im new to this motor/setup but have read up a little on the common issues. Is it possible they put something out of sync cleaning valves? or are valve issues more on thge electronics side of things?

 

[Killer Time Racing]

I was going to let you know but now I must ..
This is the Axys section
Your chassis is a Pro Ride

But to answer your question the exhaust valves on your motor are Cyl Pressure activated. The solenoid is a bypass ..

Ask your question in the Pro section
And also I'm not following your symptoms , what are you referring to "backshift"? The motor would have no load if you were. Backshifting .. are you referring to getting back on the throttle ??

My second guess is the snowmobile has the incorrect clutch calibration ( primary weights )

 

[mickyd32]

It’s a pro x switchback. Which IS an axys chassis sled

 

[mickyd32]

I was going to let you know but now I must ..
This is the Axys section
Your chassis is a Pro Ride

But to answer your question the exhaust valves on your motor are Cyl Pressure activated. The solenoid is a bypass ..

Ask your question in the Pro section
And also I'm not following your symptoms , what are you referring to "backshift"? The motor would have no load if you were. Backshifting .. are you referring to getting back on the throttle ??

My second guess is the snowmobile has the incorrect clutch calibration ( primary weights )

No you can be at full throttle, see a change in load to the sled and it starts to lose power and rpms start to fade away, then it slowly recovers. We have two other 2015s and one 2016 with the ho motor and I haven’t seen this in any of them