2003 VMAX 600er rpm problem

Doughnut

New member
Joined
Jan 14, 2010
Messages
3
Age
53
Location
ont canada
I just purchased Vmax 600er very low miles for my wife but it seems to over rev 9k and up is this normal any help on this subject would be great

Thanks
 
You're over by 500rpm. Stock is 8500 rpm. Check the belt. It might be worn out causing your over rev. If you click on the "TY Tech" tab then "Snowmobile Tech" then "Stock Yamaha Specs". It will give you all the spec's you need.
 
Thanks for reply i did a belt swap put a brand new one now im thinking rivets change maybe outer one it engages at 4200 but it will go more than 9k i just don't want to go higher than that
 
Well I dealt with that problem with my 03 600 venture.. I have got about 4.7g in the tip right now, put softer spring in primary (Was running to hot for my liking) but that didn't change a damn thing.. Those 8DG weights just do not respond at all by adding to tip.. So I went to the secondary and put in a 9760 bender helix (49/45) with a green spring at 70,, max rpms are now spot on along with a cruising speed of 5-600 rpm less than before... Much more responsive with a higher top speed and much better fuel economy....Still have all that weight in the tip also... I have to think of the spring I put in the primary and I'll edit this post then.. I'll take a look at it this weekend.... Oh ya clutches run alot cooler also.... Bottom line IMO that engine can pull a steeper helix..
 
I purchased it on eBay brand new for $35. bucks,, spring I had lying around,, but only cost $20.00 from dealer.... that thing runs so sweet now.....
 


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