STIHL The Official Stihl Chainsaws Thread

[lehman live edge slab]

I will get it cleaned and an oem kit in it, does anyone know wherre the meterig level should be, does it finish flush with the carb body.

It will be flush with bottom of the chamber on the zama that’s on it. Odds are that’s correct anyway and the carb is just plugged, if you don’t have an ultrasonic cleaner just be careful around the check valves ect with too much pressure from air because they can get damaged. The two dark spots are the pins that need removing to get limiters out.

 

[justoldsaws]

Low hour ms460, picked it up cheap due to the damage around the clutch.
The remnants of the clutch spider is stuck, Ive had a socket with a breaker bar and then a 1/2 drive rattle gun, still won't undo (yes im going the right way).
Will try heat next with the rattle and if that doesn't work ill use a grinder to cut and weaken it.

 

[lehman live edge slab]

Low hour ms460, picked it up cheap due to the damage around the clutch.
The remnants of the clutch spider is stuck, Ive had a socket with a breaker bar and then a 1/2 drive rattle gun, still won't undo (yes im going the right way).
Will try heat next with the rattle and if that doesn't work ill use a grinder to cut and weaken it.View attachment 475876View attachment 475877View attachment 475878View attachment 475879View attachment 475880

Warming it up some and spraying a good penetrant like areokroil or liquid wrench may help loosen it also.

 

[bogieboy]

Warming it up some and spraying a good penetrant like areokroil or liquid wrench may help loosen it also.

This is the mechanic in me.... bigger rattle gun would likely get it too (assuming the OP hasnt hit it with a snapon mg725 or the like yet) them things will loosen just about anything...i have had a few stihls in my day that needed the 725 to get the clutches off as well...

I almost find it better to leave the clutch assembled if possible, as theres then more rotational mass as well, which helps spin it off... same concept as a heavy socket for impact vs normal impact or chrome socket

 

[oddsaws]

Anyone ever heard of or used at Tillotson HE28 carb for an 044/ms440?

https://ebay.us/m/dCJTQZ

I did a little research on this, found a lot of Tillotson application charts, but none reference the HE-28A. Based on this section it could be assumed that it was an aftermarket offering. I would probably reach out to Tillotson to get the real facts.

 

[Maintenance Chief]

Low hour ms460, picked it up cheap due to the damage around the clutch.
The remnants of the clutch spider is stuck, Ive had a socket with a breaker bar and then a 1/2 drive rattle gun, still won't undo (yes im going the right way).
Will try heat next with the rattle and if that doesn't work ill use a grinder to cut and weaken it.View attachment 475876View attachment 475877View attachment 475878View attachment 475879View attachment 475880

Just FYI I have cracked a 044 piston with rope in the cylinder when trying to unstuck a clutch!

 

[FergusonTO35]

Need advise regarding a Stihl MS251.
It has not ben started this pst two and a half years, it lay with fuel in it.
I drained the tank, washed it out with clean fuel, and filled it with Aspen2 stroke mix.
It startd right up, on first pull with the choke on, then it slowly died, would not start
and its one of those with the easy start.
Pulled the plug, it was dry, which I presumed as it refused to throttle up, like the low
was lean.
Got it going again and this time it would stay going but died way down every time I
gave it some throttle, If I feather the throttle it will roar into fourstroking, I stopped as it needs worked on.
It could be the low just needs adjusted, It could also be a stiff diaphram that will draw when the engine
speed is high but not when low, either way I need to know what tool to get to adjust the jets.
Does anyone know what tool I need for the carb on this saw, and if there is limiters in there
how does one get them out.
I woiuld like to try adjust the carb as this might be all it needs, it might actually run on standard
two stroke mix, either way I need the tool as I have been given this saw and would like to get it right.
All advice welcome, thanks.

Here's what I have done in the past for this very problem, it works about 50% of the time and the machine comes back to life without further repairs so its worth a try. I don't know anything about Aspen fuel, if it helps or hurts in this situation. I use name brand premium gas with a healthy dose of stabilizer.

Pour out old fuel, examine the inside of the tank for "slime" or debris. Soak the tank in fresh straight gas (including the in tank filter) for a day or two. Pump the straight gas through the carb and lines via the primer or vacuum pump if this is possible.

Pour out straight gas and put it in a machine that doesn't care about fuel quality such as my old tractor.

Fill the tank with fresh fuel mix, and add a full ounce of an aggressive cleaner like Sea foam or Gumout Regane. Add a pinch of extra 2 stroke oil if you think it needs it.

See if it will start. If it does, let it run for a good while, then shut it off. If not, at least try to pump the new fuel with cleaner through the carb. Continue to let it sit with this fuel in it and try to start it every day. Quite often, the new fuel and cleaner gets things opened back up enough and gets the diaphragm flexing enough to use the machine again.

 

[lehman live edge slab]

Here's what I have done in the past for this very problem, it works about 50% of the time and the machine comes back to life without further repairs so its worth a try. I don't know anything about Aspen fuel, if it helps or hurts in this situation. I use name brand premium gas with a healthy dose of stabilizer.

Pour out old fuel, examine the inside of the tank for "slime" or debris. Soak the tank in fresh straight gas (including the in tank filter) for a day or two. Pump the straight gas through the carb and lines via the primer or vacuum pump if this is possible.

Pour out straight gas and put it in a machine that doesn't care about fuel quality such as my old tractor.

Fill the tank with fresh fuel mix, and add a full ounce of an aggressive cleaner like Sea foam or Gumout Regane. Add a pinch of extra 2 stroke oil if you think it needs it.

See if it will start. If it does, let it run for a good while, then shut it off. If not, at least try to pump the new fuel with cleaner through the carb. Continue to let it sit with this fuel in it and try to start it every day. Quite often, the new fuel and cleaner gets things opened back up enough and gets the diaphragm flexing enough to use the machine again.

Glad this works for you I’d much rather just clean and rebuild the carb than risk the saw being on the lean side and wrecking something but that’s just my opinion.