Husqvarna 2100 woe’s

[scotiansaw]

Hello there,

I have an early 80s 2100 here. I have been using it for milling big hardwood and it has been working great. Recently I discovered the piston was quite scored up (below), but was still running great. I decided to order a new piston/ rings cylinder gasket from sawzilla. The cylinder was fine after a quick hone and still fell within spec. I also replaced the wrist pin bearing and muffler gasket. Bottom end was tight no issues.

When I put it all back together it is now extremely hard to start. It will start first pull, run like crap and only at full throttle, then will die and won’t start again until it sits for a while (flooded?) Saw won’t idle. Running 32:1 mix which is what I always ran. Inside the cylinder is still nice and clean. I noticed black oil leaking from the muffler, cleaned the spark arrestor with no change. Carb is clean and rebuilt. H & L are at factory settings.

One thing I did do which maybe I shouldn’t have, was add a bit of 10w engine oil to the crank bearings while I was in there (maybe 5-10cc tops). I figured this was a good idea at the time but perhaps it is burning it off and causing the saw to run poorly.

Does anyone have any insight? Saw has lots of compression. I appreciate your help.

Simon, Nova Scotia Canada

 

[Rocker59]

Did you set the carb back to default needle positions? Sounds like it is flooded.

 

[scotiansaw]

Did you set the carb back to default needle positions? Sounds like it is flooded.

Hey Rocker,

I checked the height of the needle arm, and it is flush with the housing (as recommended in the shop manual.) the H and L and back to default setting as well. Is there any other adjustments I should check?

 

[Wood Doctor]

"Carb is clean and rebuilt."
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Seems like you have a carb problem (fuel issue of some sort). Old saw usually means that the carb could be in bad shape.

 

[scotiansaw]

"Carb is clean and rebuilt."
------------------------------
Seems like you have a carb problem (fuel issue of some sort). Old saw usually means that the carb could be in bad shape.

That’s entirely possible. I’ve had it apart a dozen times cleaning everything out I could with no luck. Maybe the needle just isnt seating right

 

[cbfarmall]

A little oil on the bearings will not hurt it one but or make it hard starting. Worst case, sometimes a fresh rebuild needs a fuel prime the first startup. The extra oil makes it smoke a bit for a few seconds and raise compression at first. It won't explain your other symptoms. Likely the carb, better hope it isn't the ignition.