STIHL The Official Stihl Chainsaws Thread

[lehman live edge slab]

Guys better hurry might not last, I have 4-5 of these at home maybe I better sell them to buy some saws.

 

[heimannm]

I was approached today by someone complaining about an MS250 being hard to pull over...sound familiar?

It there a boss on the cylinder casting where a compression release valve could be easily installed?

Thanks,

Mark

 

[lehman live edge slab]

I was approached today by someone complaining about an MS250 being hard to pull over...sound familiar?

It there a boss on the cylinder casting where a compression release valve could be easily installed?

Thanks,

Mark

Not really, might have an easy start rewind and associated parts for it but that’s about all I can say for help. The cylinder is all fins all the way around.

 

[heimannm]

That's what I thought from reviewing photos of saws I'd worked on earlier this year, but I had to ask.

Mark

 

[FergusonTO35]

My 250 is stock and as easy as any other small saw to pull over. Mebbe something is wrong with the recoil?

 

[lehman live edge slab]

My 250 is stock and as easy as any other small saw to pull over. Mebbe something is wrong with the recoil?

I’ve never found them hard to pull either but I have heard this as a complaint before so to some they must pull hard.

 

[Maintenance Chief]

I've run into 2 that were hard to pull over, also older users.

 

[heimannm]

Hard to pull over at age 40 is much different than hard to pull over at age 70...

 

[67L36Driver]

I need guidance on an aftermarket 066.

This thing has too much compression and spark advance for a skinny 80 yo to start. Or anyone for that matter.

Even had a monster size friend try and all it does is kick back. (Yes, we drilled the bleed port on the comp release.)

Now I seem to remember something about the ignition coil having a spark retard built in to the OEM coil.
True?
Can someone confirm?

 

[qurotro]

That's what I thought from reviewing photos of saws I'd worked on earlier this year, but I had to ask.

Mark

Your not wrong. Those might be 025C with primer blub. But no MS250 as I know of. Some 025 have cylinder with decom boss but not tapped. Not seeing those everyday but they do exist.

 

[Maintenance Chief]

I need guidance on an aftermarket 066.

This thing has too much compression and spark advance for a skinny 80 yo to start. Or anyone for that matter.

Even had a monster size friend try and all it does is kick back. (Yes, we drilled the bleed port on the comp release.)

Now I seem to remember something about the ignition coil having a spark retard built in to the OEM coil.
True?
Can someone confirm?

I wouldn't trust an AM decomp to be doing anything, the 395xp husqvarna decomp is gonna be my go to for most.
If that doesn't help pull the flywheel and take .005 off the key to retard the timing, but in my experience it is just gonna need 5-6 tanks of fuel run through it.

 

[heimannm]

Carl - the OEM coils indeed have some advance built into the electronics, and will not produce a spark at lower speeds, I think something like 600 RPM is the lower limit. If your saw is firing at lower cranking speeds I might suspect the coil is at fault.



Mark