RPM Help, Stihl HT 131 and FS110R 4 Mix motors.

[JOE.G]

Hi, I decided to do a tune up on these items since its been a while and the FS110 R weed whacker has a lot of hrs on it, I checked the RPM with my tach and I am getting HT 1331 it hit 10 K once and then it goes to about 9,200 and breaks up ( Rev Limit maybe ? ) Manual says 10,500 cut out.
FS 110 R is about 9,500 ish manual says 10,200 or 10,500 I forget. What should I try to get from them ?Thanks

 

[lone wolf]

Hi, I decided to do a tune up on these items since its been a while and the FS110 R weed whacker has a lot of hrs on it, I checked the RPM with my tach and I am getting HT 1331 it hit 10 K once and then it goes to about 9,200 and breaks up ( Rev Limit maybe ? ) Manual says 10,500 cut out.
FS 110 R is about 9,500 ish manual says 10,200 or 10,500 I forget. What should I try to get from them ?Thanks

Not more than that.

 

[JOE.G]

So the RPM in the 9 K range is good?

 

[lone wolf]

So the RPM in the 9 K range is good?

The manual says 10,500 is the maximum RPM allowed but 9k range should work just fine.

 

[JOE.G]

They also give a Cutting head RPM which is lower.