no limiter caps, so it must be fairly old.
Zackman, turn in the L and H screws fully (clockwise. not too tight, just to their stops).
Now un-screw both a full turn out.(anti-clockwise)
Turn the LA screw a couple of turns clockwise, to get a fast idle.
Start the saw, let it warm up.
If the idle is too high turn LA anticlockwise till you get a slow smooth idle.
Now you have set the carb to 'Standard Setting'. This may not be the best setting in terms of performance, but this is the safest setting.
You can use the saw in this mode till you take it to the dealer for fine tuning.
If, in future you feel confident enough for a DIY job, with the carb first set to Standard setting,follow the instructions I had posted earlier.
Not sure when L is 'exactly' stopped when "the chain starts to turn at idle"...seems a bit dependent on tightness of chain at that point.
Beenthere,
The chain should be snug on the bar but not tight. Even if it sags a bit, it doesn't matter.
H was turned back to when it hit the stop, but seemed also to blubber at that point too.
Make sure the air filter is clean before you do a carb adjustment.Limited air flow could cause a fuel enrichment.
If you find it difficult to set the H screw with the method I posted earlier, try this:
After you have set the L screw, At full throttle slowly turn in the H screw.
The engine speed will increase at a point, note this point.
Turn it in further, if there is no further increase, release the throttle and back off the H screw to the noted point.From here back off the H screw by 5 minutes (similar to how you would set the minute hand of a clock or watch slower by 5 minutes). That's it.
In case the engine speed increases even beyond the initially noted point, although you could back off 5 minutes from
that point to give you maximum performance, its safer to do the backing off from the initial point.
Joe
