All -

Now that I becoming more comfortable talking
with you experts on various issues and tips I thought
I would challenge you on an recent observation I
have made. That is my wifes 06 - 450 Sportsman is alot
more peppy that mine (same make/model/yr). Difference is hers is 3 months
newer with less miles like 40 miles. Mine now has about 120 miles
I would think hat mine is past its break-in period. I have performed
my first oil change and changed out air filter too, checked all my fluid levels, connections
etc. FYI, everything is stock and have not had any issues or damage etc.

Could I be experiencing a fouled spark plug or could I have
messed up the squeezing vacuum hose thing as part of the
procedure after changing out the oil?

Thanks in advance for any input you may have!

 

it could be your spark plug, does she use a higher octane gas than u do, other than that im not sure.

 

No everything is the same, same gas etc.

 

did u race her or did u ride it to feel the difference.If u raced it could be the weight.

 

No,we both noticed it as I rode hers for a while then back on
my bike vice versa. Strange?

 

Depending on where it was built it may be because the carbs are tuned different. Do you have different top speeds?

 

i noticed my wifes 450 has close to the same power as my 500 had and close to same stop speed as well. check top rpm to see if their bothing turning the same.

 

Good tips you'all I check it out hopefully
next week on my next ATV excursion.

Thanks,

 

could also be how it was broken in aswell. if you road your quad hard through break-in you could have dogged something that is causing your quad to be slower. is your tire PSI the same? have you glazed your belt?

 

Commandeer her machine and claim it as yours.