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MS461 help please

MustangMike

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A very small amount off can kill a saw, and the carb I fixed had been re built by a Stihl Dealer (who told the saw owner he now needed to purchase a new carb). It was on a MS 660.
 
huskyboy

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The stock 461 I tested seemed to like being tuned right at the 13.5k limiter to make the best power/run good. Can’t speak for a modified one.
 
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Bigmac

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huskyboy said:
The stock 461 I tested seemed to like being tuned right at the 13.5k limiter to make the best power/run good. Can’t speak for a modified one.
Click to expand...
Have read some where the optimum tune is supposed to be 14.1k stock, with 460 coil, I tune mine just under the limiter and it’s great, mm, bgd and wider ports. I think I usually have the h screw 3/4 to 1-1/16 out. When it was stock with limiter caps the h screw was all the way in, and once the limiter removed it liked a 1/2 turn out
 
Stackowood

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Update: I ordered a new OEM carb, trimmed the limiter caps so it can be fully adjusted, and the saw runs much better. Revs faster and seems to have full power. I have the high speed set at 13,300-13,400 just before hitting the rev limiter.

I still can't find any problem with the old carb- it was clean when I first rebuilt it, and I went through it 2nd time with no change.

Thanks for the help.
 
huskyboy

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Stackowood said:
Update: I ordered a new OEM carb, trimmed the limiter caps so it can be fully adjusted, and the saw runs much better. Revs faster and seems to have full power. I have the high speed set at 13,300-13,400 just before hitting the rev limiter.

I still can't find any problem with the old carb- it was clean when I first rebuilt it, and I went through it 2nd time with no change.

Thanks for the help.
Click to expand...
Some carbs are just plain junk. At least you can say you tried.
 
Bigmac

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Stackowood said:
Update: I ordered a new OEM carb, trimmed the limiter caps so it can be fully adjusted, and the saw runs much better. Revs faster and seems to have full power. I have the high speed set at 13,300-13,400 just before hitting the rev limiter.

I still can't find any problem with the old carb- it was clean when I first rebuilt it, and I went through it 2nd time with no change.

Thanks for the help.
Click to expand...
Glad you got it sorted out, what jet was in the bad carb?
 
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