About to take bfh to husky 242

[dall]

im with stump you have a weak clutch spring or worn out drum

 

[weedkilla]

im with stump you have a weak clutch spring or worn out drum

My first thoughts too.
New clutch spring and new bearing before I got confused and asked you guys.
Doubt it's the drum - a spur drum just can't be that old.

 

[huskihl]

Brake band might be bad (out of round), torquing the drum on an angle. Or maybe your new drum bearing isn't good

 

[redoakneck]

I'm in, no clue, but I just had a flywheel magnet go bad, so anything is possible

 

[Stump Shot]

Calling in a heavy, @Tor R, what do you think of this debacle?

 

[Mattyo]

Ok....so again....the chain doesn't move at idle....but when you apply the brake....it dies?

 

[Stump Shot]

Like the chicken and the egg. Have to take off the very thing causing the chain reaction to see what is happening, only it's not happening caus you took the thing off.

 

[weedkilla]

Ok....so again....the chain doesn't move at idle....but when you apply the brake....it dies?

Exactly.

 

[Stump Shot]

The only thing I can think of is to somehow replicate the movement and direction of pull of the chain brake with the chain brake off. That Gremlin can't hide forever.

 

[CR888]

Could the intake rubber boot get lifted when the brake is pressed and leak causing the stall? Just guessing, this is a secret mystery chainsaw 242.

 

[Mattyo]

take the chain off .... see if it does it....

have to start eliminating variables

i would swap the clutch drum next

 

[weedkilla]

Chain and bar off - it does it.

 

[weedkilla]

Could the intake rubber boot get lifted when the brake is pressed and leak causing the stall? Just guessing, this is a secret mystery chainsaw 242.

Hmmm. It's an instant stall - something along those lines makes a bit of sense. I made sure no wires were getting pinched/causing a short.

 

[Gunn]

What happens if you fatten up the low side and then trip the brake?

 

[huskihl]

If it's the intake being stretched, it'll still do it with the clutch and drum removed. Take them both off and install the cover and trip the brake.

 

[dall]

if you take the clutch and drum off and try to use brake you accomplish nothing right ?

 

[huskihl]

If it's the intake being stretched,

if you take the clutch and drum off and try to use brake you accomplish nothing right ?

Here's what I was thinking Dallas

 

[weedkilla]

What happens if you fatten up the low side and then trip the brake?

Same. Tried every variation of tune imagineable.

 

[VinceGU05]

Same. Tried every variation of tune imagineable.

even having it idling on 3200 rpm it stalls instant? can you flex the saw between the tank and case ( like when ya hit the brake) to see if its the intake air leak. otherwise i would try new seals and maybe crank bearings.

 

[Mattyo]

There is too much play somewhere in that clutch drum. So tripping the brake moves it far enough so that it grabs the clutch.

Wrong needle...missing needle....or....how about a worn crankshaft. ...that would do it. If there is too much play in the needle bearing because of a worn shaft that might allow the drum to move eccentrically.