'03 SKS 800 only rev'ing to 7K

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polari1man

Free Member

Nov 16, 2009

95

4

8

Nashwauk, MN

• Feb 18, 2010

• #1

'03 SKS 800 not revving past 7K on the Dream-o-meter. Issues addressed:

Primary clutch gone through, 10-64's, Almond spring (stock Black/Green also), bushings, weights, pins, etc. are new
Secondary clutch: R-11 Helix, Blue Spring in #3 hole. Clutches are aligned
New Belt

VES valves cleaned

Carbs rebuilt with 450 main jets

Updated CDI box (Tried a different cdi box-no luck)

Anybody have any idea's why I can't get motor to spin past 7K?

 

T

TurboTim

Free Member

Dec 6, 2008

33

1

8

Saskatchewan

• Feb 18, 2010

• #2

did you try dropping the needles one spot.

 

P

polari1man

Free Member

Nov 16, 2009

95

4

8

Nashwauk, MN

• Feb 19, 2010

• #3

No, but did drop the main jet from 470 to 450

 

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Taylzee

Free Member

Feb 9, 2010

18

0

1

Saskatchewan

• Feb 19, 2010

• #4

I just had a problem like this on an 04 RMK 800. Turned out one of the exhaust valve bellows was torn right around the vlave shaft. Put a new bellow in and away she went. I was also thinking clutching but it was that simple. $20.00 fix! Pull the cover off your EV and look at the bellows. If the back side has any oil on it, that will be your problem.

 

A

abm2958

New member

Premium Member

Nov 30, 2008

48

0

6

46

Northwest Lower Michigan

• Feb 20, 2010

• #5

Taylzee said:

I just had a problem like this on an 04 RMK 800. Turned out one of the exhaust valve bellows was torn right around the vlave shaft. Put a new bellow in and away she went. I was also thinking clutching but it was that simple. $20.00 fix! Pull the cover off your EV and look at the bellows. If the back side has any oil on it, that will be your problem.

Click to expand...

I agree, any holes and it will need to be replaced. Also don't forget the loctite on the threads of the exhaust valve, tried that once and it came undone.

 

joshkoltes

Well-known member

Lifetime Membership

Dec 16, 2007

3,842

1,170

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41

ranchester, wy - nashua, mn

• Feb 22, 2010

• #6

same

im having a similar issue, thinking i have the wrong ex valve spring causing the low revs being theres no change when jets are changed. just replaced a bad bellows and the other two were fine but i do have the pink springs in so ill try that yellow spring next