Author Topic: MS 261CM hot weather issue? (Read 314 times)

Old Iron Logging · « **on:** September 19, 2016, 08:13:50 pm »

Anyone seeing or hearing of running issues with the 261CM in 80 plus temps with high humidity?

Cut4fun . · « **Reply #1 on:** September 19, 2016, 08:58:54 pm »

I've heard of m-tronic issues with them. None that I read on had to do with heat etc. Maybe it was and they didnt put 2 and 2 together?

Old Iron Logging · « **Reply #2 on:** September 19, 2016, 09:32:29 pm »

What issues are you hearing about? We have a number of saws that test fine but will not idle down as they should. Replaced coils, carbs, solenoid so but no change.

Cut4fun . · « **Reply #3 on:** September 20, 2016, 01:18:28 pm »

Using and get running temp, set down idle and die, harder to restart idle and die, even harder to restart if you can restart. Sometimes never restart after couple trys.

Have you tried resetting them?

I'm just WAGing no clue here.

I know I would like to check out one of those NE type II 2 261 with regular carb though.

Looks sweet and light as all get out.

Old Iron Logging · « **Reply #4 on:** September 20, 2016, 05:25:57 pm »

Saws all test fine on computer. Gave one customer a new saw after third trip in for same issues. Changed seals, coil, carb, clutch,etc at techs recommendation. Works great in shop but problems resurface in the woods. 4 saws doing the same thing. I read over a year ago something about high humidity issues but can't find it anymore.

Cut4fun . · « **Reply #5 on:** September 22, 2016, 01:22:21 pm »

@Bushweasel Jason you have anything on this?

I know BW said he likes the 261 and has ported a couple out west.

Old Iron Logging · « **Reply #6 on:** September 22, 2016, 06:59:55 pm »

Shop tech started the saw today. Has not run in 4 days. Idles at 10,000 rpm.

Bushweasel · « **Reply #7 on:** October 01, 2016, 06:54:53 pm »

Faulty/leaking decomp valve?

Bushweasel · « **Reply #8 on:** October 01, 2016, 07:01:40 pm »

Sounds to be an air leak or fuel restriction. Passed all the test, so air leak is out. Pinched fuel line or faulty filter?? wiring harness??

Old Iron Logging · « **Reply #9 on:** October 01, 2016, 10:09:10 pm »

Every startup the saw acts differently. Sent it to Stihl to let them play with it. 4 more with similar issues in shop.

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Author Topic: MS 261CM hot weather issue? (Read 314 times)

Old Iron Logging

MS 261CM hot weather issue?

Cut4fun .

Re: MS 261CM hot weather issue?

Old Iron Logging

Re: MS 261CM hot weather issue?

Cut4fun .

Re: MS 261CM hot weather issue?

Old Iron Logging

Re: MS 261CM hot weather issue?

Cut4fun .

Re: MS 261CM hot weather issue?

Old Iron Logging

Re: MS 261CM hot weather issue?

Bushweasel

Re: MS 261CM hot weather issue?

Bushweasel

Re: MS 261CM hot weather issue?

Old Iron Logging

Re: MS 261CM hot weather issue?

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