09 M1000 not pulling full rpm

[Badnews]

Long story short my 2009 M1000 has not been pulling full rpm lately. She has only been pulling 6900-7100 rpm and I have tried some corrective measures such as a new primary spring, new plugs and a new belt which did not help. Then it was off to the shop where they found low compression and refreshed the top end. Still no improvement. I then changed the belt to a 046 which gave it 200 more rpm. It is now pulling 7200-7300 but used to easily pull 7500 consistently.

Any other thoughts? New Secondary spring? New primary clutch? match?

1700 miles on er.

 

[joe-bert]

its only supposed to pull 7400 tops

 

[Badnews]

ya , I am aware of that however the drop of rpm does indicate a problem somewhere, and the 100=200 rpm it doesnt have right now ( with 046 belt) can be noticed.

Power valves checked out ok.

 

[markoo]

Check you motor mounts. I would bet you have a few torn ones which will let the engine twist under load pulling the clutches out of alignment.

 

[Pink-Inc]

X2 on the motor mounts. I had all 3 gone on my pto side and had the same issue

 

[Badnews]

Thanks gents.... will do! 1 more thing to inspect that didn't cross my mind

 

[calgarysledguy]

maybe check the plastic secondary rollers.Could be wearing out.

 

[tchriste]

The list of things that can cause low RPM is quite long and it appears you have worked on quite a few of them. Some other odd things that come up are: the secondary bushing, feul pressure too high, worn pins and bushing in primary, sparkplugs, sparkplug leads, bad sparkplug caps....motor mounts has been the big issue with the 1000.

 

[Badnews]

Thanks for all the info fellas., its nice to have a list of potentials to go by. Next day off I'll continue chasing this.