Stihl 044 becoming a BEAST to crank!

[Gypo Logger]

Let's see:
Not pulling hard enough
Cylinder carboned up
Flywheel out of timing
Leaking needle valve
Can I add that the recoil spool is split and the starter rope is jamming

 

[a. palmer jr.]

My 044 kicked back if you tried to start if from the ground but you could drop start it and it wouldn't kick back. I've had a couple of Homelite 330s that kicked back also.

 

[pioneerguy600]

Let's see:
Not pulling hard enough
Cylinder carboned up
Flywheel out of timing
Leaking needle valve
Can I add that the recoil spool is split and the starter rope is jamming

Hey John, when a keyway shears which direction does the timing go?...

 

[bayard]

my 044 is a tad hard to start. 190 psi. i have dropped started it 1000 times a least.sometimes it will pull the cord out of your hand.

 

[mkinslow]

This sounds like what this 066 was doing before it ended up on my workbench

 

[brandonstc6]

Yikes!


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[mkinslow]

I actually said h@@@@ s&&&

 

[Big_Wood]

never had a problem with any 1128 new or high hour besides my 461. plugged decomp to eliminate it ever being an issue, tightened squish, and ported. started fine cold but hot it would rip the handle out of your hands if you didn't mean it and then ruin you day if you did mean it. only way to start it was getting it just past TDC then pull like you mean it. even then it would get me often lol i don't have a problem starting any other saw without a decomp. that one had stock timing even. elastostart sucks!!!!!!

 

[alexcagle]

Could it be that the ignition coil electronics within are no longer retarding the timing at lower RPM?
Has anyone ever heard of this happening? -
-as in a difference in running behavoir and performance between two coils?

Just thinking outside the box.

 

[Gypo Logger]

Hey John, when a keyway shears which direction does the timing go?...

You mean the halfmoonkey? Lol

 

[Big_Wood]

You mean the halfmoonkey? Lol

i'll give you a hint in a sentence. when the key is sheared the timing will go Gypo Logger

 

[Deleted member 135597]

i'll give you a hint in a sentence. when the key is sheared the timing will go Gypo Logger

i see what you did there

 

[LegDeLimber]

If the flywheel is slipping while you pull the recoil,
It'll advance.
If it slips when the chain break is triggered/snapped,
at high enough revs to have the clutch fully engaged,
It'll advance.

 

[alexcagle]

A little off the subject, and sideways; I probably should make a separate post even......

But on the subject of timing and keyways.
On the Stihl fuel injectedTS500i, it is crank triggered by the crankshafts' counterweights, with a sensor through a hole in the bottom of the crankcase.
It does have a flywheel keyway, but it's just to aid in tightening.
The same sensor reads atmospheric and crankcase pressures inside the crankcase, temperature, crank position, and mixture.
Amazing, and I've never seen one fail yet.

 

[grizz55chev]

Interesting; but on the Stihl TS500i, it is crank triggered by the crankshafts counterweights with a sensor through a hole in the bottom of the crankcase.
It does have a flywheel keyway, but it's just to aid in tightening. The same sensor reads atmospheric and crankcase pressures inside the crankcase, temperature, crank position, and mixture.
Amazing, and I've never seen one fail yet out of probably close to 300 I've serviced.
*
On another subject, I saw a public request for an "in suit" crapper design on the Weather Channel this morning. Maybe NASA should get the team who designed that sensor to figure out how to create an "in suit" crapper for extended-stay space travel.
Or maybe ask the guys at area 51 to ask the aliens how they did it, lol.....

Protein pill.

 

[alexcagle]

If the flywheel is slipping while you pull the recoil,
It'll advance.
If it slips when the chain break is triggered/snapped,
at high enough revs to have the clutch fully engaged,
It'll advance.

*

Good Logic

 

[grizz55chev]

David Bowie.

 

[Gypo Logger]

i'll give you a hint in a sentence. when the key is sheared the timing will go Gypo Logger

Is this a trick question?
Answer: The saw becomes woodrough.

 

[alderman]

It could be a gradual build-up of carbon on the piston crown and in the combustion chamber.

Another learning opportunity so bear with me.
How does the carbon buildup make it "kick" harder? Does it affect the timing or somehow make it fire hotter?
The first Shindaiwa 500 I had was very hard on the hands if I wasn't paying attention and went easy on the pull. Very surprising as it is a smaller saw. I've had over 50 other Shindaiwas without issues but recently resurrected another 500 with the same issue.


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[alexcagle]

View attachment 541442 View attachment 541443 This sounds like what this 066 was doing before it ended up on my workbench

*
Isn't that an after market crank?