MS460 Oiler

[Unit44]

Well I picked up a 8 month old very abused MS460 Mag, looks like the guy used the original chain till' it got dull and then just kept using it. So far I have taken it completely down for cleaning and then found what looks like dirt behind the clutch right above the oiler - see pict. Any I was wondering what caused this amount of debris to accumulate here? It was really packed in there.... I have completely cleaned it up now and when I let it idle for 60 seconds with no chain it did not feed any oil?? The clutch drum was spinning since the chain was not on there but no oil - I can't run it any more here as I have neighbors close by so a longer test will have to wait till morning but I thought I would see it oiling a little?? Anyway anybody see this before?

View attachment 206745

 

[Unit44]

After

And after...
View attachment 206749

 

[w8ye]

If you replace the oiler, put the high volume one in?

 

[o8f150]

i would almost say it is a worn out worn gear

 

[parrisw]

if you just idle'd it, it wont pump any oil. Put a bar and chain on it hold it at wot for 10s and check for oil sling off.

 

[pioneerguy600]

Check to see that the drive arm/lever is securely attached to the nylon worm gear, if it will slip around on the nylon worm unit it won`t pump oil.

 

[fj40chance]

I found the exact same thing on a used ms460 I bought a while back. The oil pump was still working. I just figured it was the rubber gasket at the pump to case mating surface leaking a little and causing it to collect any duct or debris that made it in there.
I changed it out and everything is still clean.

 

[Unit44]

Thanks for the good ideas so far, where would I vet a high volume pump? If I have to go that route.....

If you replace the oiler, put the high volume one in?

 

[w8ye]

From the Stihl dealer . . . .

These are 066 parts numbers but I think they work on the 460 oiler?
The only real difference is the piston and control bolt. You should also use two new O-rings.
I do not have a 460 IPL to verify the compatibility?

7. HO Oil pump; 1122 640 3201 including items 8 to 14:

8. Pump housing 1122 640 3005
9. Compression spring 0000 997 0629
10. HO Pump piston 1122 647 0602
11. HO Control bolt 1128 647 4802
12. O-ring 9646 945 0160
13. Roll pin 9380 620 1090
14. Plug 1125 647 7002

 

[Stihl-Pioneer]

From the Stihl dealer . . . .

These are 066 parts numbers but I think they work on the 460 oiler?
The only real difference is the piston and control bolt. You should also use two new O-rings.
I do not have a 460 IPL to verify the compatibility?

7. HO Oil pump; 1122 640 3201 including items 8 to 14:

8. Pump housing 1122 640 3005
9. Compression spring 0000 997 0629
10. HO Pump piston 1122 647 0602
11. HO Control bolt 1128 647 4802
12. O-ring 9646 945 0160
13. Roll pin 9380 620 1090
14. Plug 1125 647 7002

For 460
HO oil pump 1128 640 3250
control bolt 1128 647 4803
pump piston 1128 647 0602

 

[Unit44]

I found the exact same thing on a used ms460 I bought a while back. The oil pump was still working. I just figured it was the rubber gasket at the pump to case mating surface leaking a little and causing it to collect any duct or debris that made it in there.
I changed it out and everything is still clean.

I hope that's all that is wrong with mine... my 8 year old 360 did not have hardly anything back there is the 8 month old 460 was packed full, I guess that's what happens when you use a dull chain for too long.