Author Topic: modding 440 oiler stihl oilers  (Read 695 times)

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Offline jmester

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Re: Ms 440
« Reply #20 on: November 09, 2014, 08:20:53 pm »
The half moon is to the left of the picture. I measured the half moon on the new piston pump I have here and it is .148 so you do need to take a fair amount off. I used the 460 high flow piston pump to come up with that number of .125. Hope that will help you.
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Offline mdavlee .

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Re: Ms 440
« Reply #21 on: November 09, 2014, 11:02:44 pm »
You can grind that slot more and then make the shoulder ramp a little steeper and that will add more stroke on the whole piston. Both will add flow.

Offline Moparmyway

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Re: Ms 440
« Reply #22 on: November 10, 2014, 07:32:33 am »
So you made the scoop, or half moon longer by grinding where it meets the shaft ?

Offline jmester

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Re: Ms 440
« Reply #23 on: November 10, 2014, 08:07:42 pm »
I made mine deeper. this was the first one i have done. i would like to play some more and figure out what works the best to just make it deeper or to make the scoop longer as Gatekeeper has mentioned above. Either route you take you are going to win and have more oil flow.
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Offline Cut4fun

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Re: Ms 440
« Reply #24 on: December 15, 2014, 11:58:25 am »
Mike I am going to leech your pics over here for this thread. That way it is updated with pics.
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Offline Cut4fun

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Re: modding 440 oiler stihl oilers
« Reply #25 on: December 15, 2014, 12:01:37 pm »
Per Mike = I know there was lots of talk on wanting stihls to oil better. You can buy Ho parts for some of the saws but the 440 and a few others don't have the parts available. I didn't mod this one yet but it's a 1122 oiler for the 064/66/660 series. The same thing applies to the 440/460 oilers but the end is shaped a little different. I did some paint shop work on the pictures to help you guys out. The control bolt there on the right is where the slanted end of the piston rides. You can make the circle a little smaller and it will give it more stroke. Taking that shoulder down does the same thing. There's .25mm difference in the HO oiler to regular on the 660. You can open the notch in the end where the oil actually travels a little bit in length to let more in there before it rolls around and forces it out to the bar.

other pics removed, embedded below.

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Offline Tractorsaw1

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Re: modding 440 oiler stihl oilers
« Reply #26 on: December 15, 2014, 04:50:33 pm »
Does anyone have the 460 high output control bolt part #?  My 044/6 is a weak oiling also.  On the 064 I felt like my old modded pump put out more than the newer style pump with the 066 HO parts in it.  I took the pump over to bench grinder & thinned the head down about half of stock, that way it could unscrew more & not hit the case.  I put the 066 HO parts in 2 different saws & I don't think I am going to order in more of that.

I think I am going to drimmel the control bolt head stop to get a little more movement.

Offline 660magnum

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Re: modding 440 oiler stihl oilers
« Reply #27 on: December 15, 2014, 05:15:22 pm »
Here is the service bulletin
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline Tractorsaw1

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Re: modding 440 oiler stihl oilers
« Reply #28 on: December 15, 2014, 05:36:58 pm »
Thanks!

Offline Cut4fun

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Re: modding 440 oiler stihl oilers
« Reply #29 on: December 16, 2014, 06:34:09 pm »
Pics embedded. Can you see them now?



Per Mike = I know there was lots of talk on wanting stihls to oil better. You can buy Ho parts for some of the saws but the 440 and a few others don't have the parts available. I didn't mod this one yet but it's a 1122 oiler for the 064/66/660 series. The same thing applies to the 440/460 oilers but the end is shaped a little different. I did some paint shop work on the pictures to help you guys out. The control bolt there on the right is where the slanted end of the piston rides. You can make the circle a little smaller and it will give it more stroke. Taking that shoulder down does the same thing. There's .25mm difference in the HO oiler to regular on the 660. You can open the notch in the end where the oil actually travels a little bit in length to let more in there before it rolls around and forces it out to the bar.


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