« previous next »
Pages: [1]   Go Down

Author Topic: MS390 Crank Bearings  (Read 1261 times)

0 Members and 0 Guests are viewing this topic.

Offline Jason K

  • 6 cube
  • ****
  • Posts: 190
  • Karma: 7
  • Location: Iowa
MS390 Crank Bearings
« on: March 18, 2016, 01:36:06 am »
I got drop off a clean MS290 with bearings and top end shot.. So I am going to make it MS390.. I was wonding what part number for the bearings and seals.. Is there all metal cage that I can replace the cheap plastic ones with.


If please help me out and give me part numbers


Thanks
Jason
Logged

Share on Bluesky Share on Facebook

Offline 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: MS390 Crank Bearings
« Reply #1 on: March 18, 2016, 03:10:23 am »
Stihl 290/310/390  6203 C3 SKF OPEN TYPE BEARING 17X40X12mm   Seals 17 X 30 X 4.4  I level off the bearing cap and the cylinder with some 320 wet or dry paper on a glass pane before reassembly.

Buy a sealed bearing and then carefully remove the existing rubber seals.

The sealed bearing sets are always cheaper than open, mostly due to the fact that sealed is what's produced most.

Stihl Part #9503 003 0310, Generic 6002-C3, size15x32x9

Fits 028 Flywheel side

Stihl Part #9503 003 0340, Generic 6202-C3, size 15x35x11

Fits:
034/036 Flywheel side
038 Flywheel side
O28 Clutch side
044/046 Flywheel side
048 Flywheel side
021
023
025
MS210
MS230
MS250
041
042

Stihl #9503 003 0440 and #9503 003 0443 Generic 6203-C3, size 17x40x12

Fits:
038 clutch side
064/066 Flywheel side
084/088 Flywheel side
029/MS290 both sides

Also fits the following Husky’s
240
245
281
288
385
390
394
395
2100
Also 181 but some have different bearings each side.
Logged
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 660magnum

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO
Re: MS390 Crank Bearings
« Reply #2 on: March 18, 2016, 03:18:38 am »
FWIW the plastic cage (Polymid) bearings are more expensive than the steel cage bearings and are normally considered more desirable for high speed service.

Also if you loose a plastic cage, the engine will lock up but there are a minimum of metal shavings up in the engine. If you loose a metal cage, the metal shavings have been going up through the engine for some time and you will consider the piston/rings gone and sometimes the cylinder too.
Logged
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 Jason K

  • 6 cube
  • ****
  • Posts: 190
  • Karma: 7
  • Location: Iowa
Re: MS390 Crank Bearings
« Reply #3 on: March 18, 2016, 09:02:35 am »
Thanks For the Input. 660..
Logged
Pages: [1]   Go Up
« previous next »
 

Related Topics

  Subject / Started by Replies Last post
41 Replies
4692 Views 		Last post May 09, 2019, 07:07:16 pm
by HUSKY KEV
12 Replies
1811 Views 		Last post August 31, 2013, 07:28:45 pm
by 660magnum
2 Replies
979 Views 		Last post October 27, 2013, 09:09:17 am
by brokenbudget
18 Replies
2685 Views 		Last post November 11, 2013, 09:19:48 am
by KilliansRedLeo
Crank Bearings

Started by farmboy « 1 2 » Husqvarna

10 Replies
1470 Views 		Last post January 21, 2014, 02:30:55 pm
by 05_sprcrw
Crank bearings

Started by jmester « 1 2 » Stihl

12 Replies
1604 Views 		Last post July 24, 2015, 07:14:47 pm
by 67L36Driver
4 Replies
1230 Views 		Last post March 10, 2016, 11:06:21 am
by 660magnum
3 Replies
1081 Views 		Last post June 04, 2016, 04:09:27 am
by Le Maisonniau
10 Replies
1815 Views 		Last post June 21, 2016, 03:18:11 pm
by Giles
1 Replies
1000 Views 		Last post August 05, 2022, 05:02:12 am
by DNX800