Author Topic: STIHL ms210 rebuild: what should i look for  (Read 368 times)

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Offline cummins12valve

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STIHL ms210 rebuild: what should i look for
« on: November 24, 2013, 10:27:39 pm »
I am considering buying a stihl ms210 that has a scorched piston and cylinder. the saw is cheap and worth it to me if it only needs a topend and cylinder. besides those what should I look for, and is there anything special that needs to be done for teardown/ reassembly? I have experience rebuilding 2 stroke dirtbike engines.
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Offline 660magnum

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Re: STIHL ms210 rebuild: what should i look for
« Reply #1 on: November 24, 2013, 10:53:10 pm »
Typically the fuel line is bad.

They often have a single needle carb with no High Speed adjustment.

There is a reason that the cylinder is scored. Could be someone forgot to put oil in the gas? Could be there was a air leak. May have been a bad fuel line or fuel filter or it could be the seals on the bearings.

This is a plastic body chainsaw with a individual metal engine assembly. The crank case is split horizontally at the crankshaft. There is the bottom cover with the upper part of the crankcase and the cylinder being one piece.
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Offline KilliansRedLeo

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Re: STIHL ms210 rebuild: what should i look for
« Reply #2 on: November 25, 2013, 07:37:19 am »
Agreed, figure out why she cooked before you order any parts. Like 660 said there re any number of reasons why it has a cooked top end. Due to the way the saw is designed it is not a big deal to change all the seals when you replace the top end.

Get on the IPL and manuals thread and see if someone hs a copy of the MS210 IPL and Workshop manuals. They will give you all the correct part numbers and make life much easier when doing the repairs.
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Offline Fish

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Re: STIHL ms210 rebuild: what should i look for
« Reply #3 on: November 25, 2013, 08:50:54 am »
If you need to replace the cylinder, then make it a ms250

Offline KilliansRedLeo

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Re: STIHL ms210 rebuild: what should i look for
« Reply #4 on: November 25, 2013, 10:07:32 am »
If you need to replace the cylinder, then make it a ms250

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Offline 660magnum

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Re: STIHL ms210 rebuild: what should i look for
« Reply #5 on: November 25, 2013, 10:27:31 am »
I have a 025 and a 250 - they are nice 45cc what I call limbing chainsaws. Mine are .325 but some are 3/8 low profile.
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Offline cummins12valve

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Re: STIHL ms210 rebuild: what should i look for
« Reply #6 on: November 25, 2013, 12:07:46 pm »
Thanks for all the replies and so does the ms250 piston and cylinder bolt right on no modifacation needed?
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Offline 660magnum

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We should share what we know... someone may learn...
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Offline cummins12valve

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Re: STIHL ms210 rebuild: what should i look for
« Reply #8 on: November 25, 2013, 12:18:37 pm »
Yaa I'd probly leave it as a 210
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Online jmester

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Re: STIHL ms210 rebuild: what should i look for
« Reply #9 on: November 25, 2013, 05:16:58 pm »
I would put some crank seals in for sure. Have had a lot of problems with them. Make sure you use a new gasket where the carb mounts and make sure the flange behind the gasket is not deformed around the screw holes. They will pull up if the carb is over torqued. It will cause an air leak there as well. Other wise hope you enjoy your build and the saw. There will also be 2 different seal options you can choose. 9638 003 1581 is for if the engine is assembled. You are going to want part number 9638 003 1585 for seals, make sure you use sealant around the outer edges of the seals and around the engine pan. And don't  go light on the sealant around the engine pan.
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