Chain help!

[atimmons101]

I have a header pipe for a muffler and it seems fine for exhausting. I’ll have to look into the timing. I had read before that because of the EFI it doesn’t need it but that may just be fake news lol

 

[SawAddictedFarmer]

I have a header pipe for a muffler and it seems fine for exhausting. I’ll have to look into the timing. I had read before that because of the EFI it doesn’t need it but that may just be fake news lol

We need a video.

 

[atimmons101]

I’ve tried putting video or pictures and nothing will upload. Says it’s all the wrong format

 

[SawAddictedFarmer]

I’ve tried putting video or pictures and nothing will upload. Says it’s all the wrong format

Videos have to be uploaded to YouTube and then linked.

 

[EFSM]

If you just swapped cylinders, I wonder if you need to adjust the timing to the new Ripsaw cylinder. Also, if the cylinder is modded for more power, you might need to do a muffler mod to let more exhaust out. I wonder if that is part of the issue, the saw is effectively trying to exhaust through a straw (almost like having a clogged spark arrestor on a regular saw).

Edit: I don't port or mod cylinders, but have seen enough posts of those that do that usually there are timing and exhaust mods that go along with it - hopefully some modders will speak up if I am incorrect.

Failing to advance the timing or mod the muffler will limit the benefit of porting, not reduce the power from the stock output.

 

[bigbadbob]

somethin aint proper.

i have 500i with a 25 bar and its hard to stop it with a new stihl chain
ported 461 is the same.
either saw never slips da clutch,,

 

[atimmons101]

Anyone have suggestions for how much to take off the key?

 

[SawAddictedFarmer]

Anyone have suggestions for how much to take off the key?

Bout a quarter inch at the edge of the flywheel. But I doubt that's your issue.

 

[atimmons101]

I’m going to go do some cutting tomorrow and I’ll get some videos then! Thanks for your help!

 

[singinwoodwackr]

I've owned 3 and worked on at least a half doz other 500s running 25-36" bars. never had the kind of clutch slippage you describe. the clutch springs and/or shoes may be worn out.

 

[davidwyby]

Anyone have suggestions for how much to take off the key?

None on an i

 

[davidwyby]

Poor porting can kill torque.

 

[legdelimber]

I'll assume he means that the motor revs, but the chain isn't moving much or at all?
I'm a little curious about has the bar been flipped, to see if that has any affect on things?
Is the bar twisted somehow? Any damage to the bar groove?
Any debris in the groove?
Chain been derailed and driver damages? Chain been oopsed and run backwards.
Hey, anyone can get in a hurry or be distracted by the damned cellphones at these days.

Or the Rim/sprocket?
Heck.. any chance the rim got left out ?
Is there anything around the clutch area (bar plates etc) that could be bent or missing?
Nicked/dulled tip teeth on one side and we get that curved kerf and the bar binds after a few inches of cut depth.

 

[Stump Shot]

Anyone have suggestions for how much to take off the key?

Zero, it will run worse if you do, as it will get the fuel injection timing off as well.
As far as hardwood chains go, Husqvarna X-cut is great right outta the box.
Good luck with your saw.

 

[SawAddictedFarmer]

Bout a quarter inch at the edge of the flywheel. But I doubt that's your issue.

None on an i

Zero, it will run worse if you do, as it will get the fuel injection timing off as well.
As far as hardwood chains go, Husqvarna X-cut is great right outta the box.
Good luck with your saw.

I stand corrected. Wasn't aware it was different on a EFI saw.

 

[redneckhillbilly]

I would imagine a clutch thats slipping would also be loosing its smoke. or at least had lost its smoke at some point in time