Thank you very much for doing this.
I have a 029 i need to do some preventative service on.
I have a 029 i need to do some preventative service on.
STIHL 1127 Series Complete Engine (029, MS 290, MS 310, 039, MS 390 Chain Saws)
- Thread starter D'Animal
- Start date
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Wire Problem
Can you post a picture(s) of how to wire the ignition module. I failed to take a picture when I was disassembling my MS 310 and now I am not 100% sure where all the wires should go. I already got the service manual for the 310 but it was too vague. Any help is appreciated.
Can you post a picture(s) of how to wire the ignition module. I failed to take a picture when I was disassembling my MS 310 and now I am not 100% sure where all the wires should go. I already got the service manual for the 310 but it was too vague. Any help is appreciated.
- Thread starter
- #23
The secondary ground wire goes on before the flywheel.
Hi, I'm glad I found this thread, because I'm repairing my old 029 Stihl. Thanks for your detailed guide D'Animal. It explained many things to me.
Like I said I've got an old 029 saw and the cylinder and piston are scratched, so I have to change them.
Could you advice me if it's possible to install a cylinder and piston from 039 (MS 390) to my 029? Will it fit without any modifications? Will 029 crankshaft hold out 039 piston and cylinder?
Like I said I've got an old 029 saw and the cylinder and piston are scratched, so I have to change them.
Could you advice me if it's possible to install a cylinder and piston from 039 (MS 390) to my 029? Will it fit without any modifications? Will 029 crankshaft hold out 039 piston and cylinder?
- Thread starter
- #25
Yes you can install an 039 cylinder and piston in an 029 housing.
They use the same crankshaft.
They use the same crankshaft.
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But 039 cylinder has 49mm diameter and 029 only 46mm.
And one more thing. What if I'd buy 039 cylinder with decompression valve (there is no such a valve in m sow)? Do I have to make a hole in top orange plastic cover? In general is it worth to do so?
And one more thing. What if I'd buy 039 cylinder with decompression valve (there is no such a valve in m sow)? Do I have to make a hole in top orange plastic cover? In general is it worth to do so?
- Thread starter
- #27
The compression is the same on both saws. If you did not have trouble pulling the starter rope on you 029 you should not have any problems on an 039.
I would not modify the housing for a deco valve.
I would not modify the housing for a deco valve.
Finally I ordered an original cylinder and piston in one of Stihl dealers. I've got them already. The cylinder looks OK. It has Stihl label (however without Mahle label as it is on the old one), but the piston is a bit strange. There is no Stihl label. Instead of this there is 'K' inside 'S' label on it (I attached photos). Could you share your opinion on this? Are my suspicions that this piston can be not original part are valid?
- Thread starter
- #29
Snap-On and STIHL use a very similar S logo.
The "S" is the trademark for STIHL Parts.
The arrow on the outside of the box around the S goes towards the exhaust port.
The "S" is the trademark for STIHL Parts.
The arrow on the outside of the box around the S goes towards the exhaust port.
Hi D'Animal,
I am just finishing up a complete strip down and rebuild of my Stihl 029 and your postings have been a tremendous help to me in the process.
However, I was just about to re-fit the rear hand guard section (connecting the Carb to the cylinder), when I noticed that the top of the piston does not go down past the Carb intake hole when I turn it by hand!
What have I done wrong or is this normal?? I haven't a clue. Would be very grateful for your advice.
Thank you.
I am just finishing up a complete strip down and rebuild of my Stihl 029 and your postings have been a tremendous help to me in the process.
However, I was just about to re-fit the rear hand guard section (connecting the Carb to the cylinder), when I noticed that the top of the piston does not go down past the Carb intake hole when I turn it by hand!
What have I done wrong or is this normal?? I haven't a clue. Would be very grateful for your advice.
Thank you.
- Thread starter
- #31
Make sure you flywheel is not hitting the ignition module.
OK, the flywheel is not hitting the ignition module. The flywheel rotates fully with ease, and the piston seems to be moving up and down freely and is not hindered in its movement. However, when I watch the piston move up and down through the Carb intake, I never see the top of it, only the side.
I'm guessing the piston should go low enough to take the fuel air mix into the chamber. Therefore, it would have to at least go down to the lower edge of the inlet port?? Wouldn't it??
I have not yet tried to start it, should I??
Thanks again.
I'm guessing the piston should go low enough to take the fuel air mix into the chamber. Therefore, it would have to at least go down to the lower edge of the inlet port?? Wouldn't it??
I have not yet tried to start it, should I??
Thanks again.
- Thread starter
- #33
You will not see the top of the piston looking into the intake port.
You will see the top of the piston on the exhaust port.
You will see the top of the piston on the exhaust port.
yzftaco
Goofy-Goober
This might be a dumb question, but to store it for a while they recommend cleaning the fuel tank..
How do you clean the fuel tank? Do you dump the old, splash fresh gas (not mixed) swirl and dump again?
Not sure to what extent they are taking about.
Thanks
How do you clean the fuel tank? Do you dump the old, splash fresh gas (not mixed) swirl and dump again?
Not sure to what extent they are taking about.
Thanks
- Thread starter
- #36
You can just run the saw out of fuel.
If you flush the tank, you will run the risk of the fuel filter absorbing fuel and eventually turning to varnish.
yzftaco
Goofy-Goober
Great, thanks for your advice Dan!
I know this is an old thread but just out of curiosity, but is there such thing as a HO oil pump for the 290 or is there another pump with a higher output that is compatible with the 290?
- Thread starter
- #39
I will have to check the cc output but I'm pretty sure the 039/MS390 has a higher volume.
...via IH8MUD app
...via IH8MUD app
I've been reading that the 290 has a ratio of 1 tank of fuel to 1/2 tank of bar oil. I want to either install a better pump with a higher output or mod the control bolt so I can get a result of 1:1 tank of fuel to oil. I haven't found anything on the assemble diagram of the oil pump.
