Right Out of the Service Manual for the MS201
Warm up the engine before making
adjustments. Then run engine for 20
seconds at idle speed.
Do not make any adjustments
during this period – the ignition
system maps the idle speed data.
Adjust idle speed with a tachometer.
Adjust specified engine speeds
within a tolerance of ± 200 rpm.
1. Adjust engine speed with
idle speed screw (LA)
to 2800 rpm.
2. Turn the low speed screw (L)
counterclockwise or clockwise
to obtain maximum engine
speed.
If this speed is higher than
3,300 rpm, abort the procedure and
start again with step 1.
3. Use the idle speed screw (LA)
to set the engine speed again
to 3,300 rpm.
4. Turn the low speed screw (L)
counterclockwise to set
engine speed to 2,800 rpm
5. Use the idle speed screw (LA)
to set engine speed to
3,000 rpm.
6. Use the high speed screw (H)
to set engine speed to
14,000 rpm – starting from
the basic setting.
Do not make any leaner after
maximum engine speed is reached
– the ignition module limits
maximum engine speed to
about 14,000 rpm.
The maximum permissible engine
speed cannot be increased by
making the mixture any leaner – an
overlean mixture increases the risk
of engine damage.
It's not M-tronic. Tach will work up to about 12.9k and the limiter will drive the tach back to zero. This one definitely needs wood to tune. This saw will reset my tach(Fast-Tach) after hitting the limiter.
and this all has what exactly to do with my M-tronic comment that you quoted/replied to?
dw
I would hate to lead someone to believe that they can tune their saw by ear. It's just not possible. I do it all day long with smaller saws but the recipe for error is much easier on the larger saws. Difference between 13,500 and 14,000 will be the difference in plastic start melting.
Seriously?
The low is around 1 1/2 the high is close to 2 i have good throttle response it is not optimal yet it is rich. I am having a hard time doing it by ear she is a little loud
Most ported saws are tuned from 1 1/8 to 1 1/4 turns out. I think you're way rich on the tune at almost 2 turns out.
I agree with mdavlee u may need to check your LA screw , it should not be holding the butterfly open much or at all at this point in tuning, how does the saw act if you blip the throttle a few times and then set it down. it would seam to me that it would be loading up very bad
At 2 turns (h side)out you may never here the saw clean up(2 stroke) it may just 4 stroke the hole time?
We are all just trying to help, it may not always seam that way
I would hate to lead someone to believe that they can tune their saw by ear. It's just not possible. I do it all day long with smaller saws but the recipe for error is much easier on the larger saws. Difference between 13,500 and 14,000 will be the difference in plastic start melting.
Just a suggestion that most people aren't going to have this ability.
well if this is what happens when i tune buy ear i must have a melt proof saw yes i have a tach
but it is always at home or in the clove box this is my only saw without a tach fitted and the hotest
[video=youtube;sz9cpb3DG5U]http://www.youtube.com/watch?v=sz9cpb3DG5U&feature=plcp[/video]
The low is around 1 1/2 the high is close to 2 i have good throttle response it is not optimal yet it is rich. I am having a hard time doing it by ear she is a little loud
Enter your email address to join: