So I've got an 036 Pro that I've been using a lot lately. Its been running great, until recently when all of a sudden it stalled and wouldn't start. I changed the plug, it has good spark, cleaned the flywheel and coil and it started up just fine. It ran great for a while too (even at idle). Then sometimes while running, it would stall if I didn't keep giving it a bit of throttle, and would only start if I had my hand on the throttle while pulling it. Sometimes it runs great, and idles just fine. And other times, it does this. Is this a fuel issue or a coil issue, or something I'm missing?
036 Problem
- Thread starter TheWoodDr
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cuinrearview
Red saw lover
Check the spring in the start/stop switch. Also when it dies when hot immediately check spark. Check the condition of your fuel line in the tank and take a look at the fuel screen in the carb. In that order.
Holding the throttle indicates to me that the carb is the culprit, likely plugged up internal screen or pump side diaphragm worn or getting stiff.
In addition to the other good ideas - Do these have an impulse line? Maybe a small hole, not enough impulse to work the fuel pump at low rpm but ok at higher rpm - stronger impulse?
BuckthornBonnie
ArboristSite Guru
This series does have an impulse line that goes from the carb housing to the crankcase. They do fail on occasion.
Probably fuel related as mentioned about. Take your time finding the problem.
Probably fuel related as mentioned about. Take your time finding the problem.
This little strainer in the carb gets packed with crud.Problem solved! Checked fuel filter, and vac/pressure tested the line, it was all good. Pulled the carb, checked the screen, it was more or less clean. Diaphragm a little stiff but no cracks or anything. Vac and pressure tested the carb and found some bubbles on the intake side gasket. Not losing much pressure, ~1psi/minute or so but I guess that's enough to cause issues. When I put the carb back together I tightened the screw a little tighter than normal just to see if it made a difference and it did. I'll order a carb kit and replace everything but nice to know it was nothing too serious. Thanks again everyone!
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Then, when you have tidied all that up- whip the muffler off, clean carbon deposits from the exhaust port of the cylinder and remove/clean/burn off the spark arrestor screen.
Once you get a good flow of fuel and air going in- you might as well treat the saw so the burnt mix can get out freely.
Once you get a good flow of fuel and air going in- you might as well treat the saw so the burnt mix can get out freely.
If you use the ethanol laced gasoline its best to use the tan colored pump side diaphragm these days. The rubber like black one will not last long with ethanol, the blue ones that come in some kits are too stiff from the outset, they don`t work well in any carbs I have used them on.
No spark arrestor (shh don't tell anyone) and its got a dual port muffler on it. Great little saw, other than the vibes.Then, when you have tidied all that up- whip the muffler off, clean carbon deposits from the exhaust port of the cylinder and remove/clean/burn off the spark arrestor screen.
Once you get a good flow of fuel and air going in- you might as well treat the saw so the burnt mix can get out freely.
That's a great tip, I'll do that!
SteveSr
Addicted to ArboristSite
Classic runs right one minute and not the next is a sticking main nozzle check valve in the carb. If it doesn't close all the way it creates an air leak in the "L" circuit and the saw won't idle. You either have to change the main nozzle or replace the carb. What carb model is it?
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That is where we differ, I find for it's size and CC rating- the 036 is nothing to rave about- I am about to sell my own one, better saws out there in that range I feel.
There probably are, I am partial to the 0 series stihls. I have an 026, 036, and 044 - and love them all. They sure are tough little buggers. I have a couple of huskys, a 288 and a 3120. The 288 admittedly has had a hard life but it's been nothing but trouble for me. Never seems to run right, the 3120 is nice tho, hard to start like the 288 and has so far spent 90% of its life on the mill.
Ok if I have problems again I will check this out! Thanks
