My chainsaw stopped working right after I finished cutting up some wood some time ago. When I tried several times to restart it didn't. As I had finished the job I put it aside and only took it out the other day, hoping for it to work. But it didn't.
I have dismantled and checked the carburetor, the exhaust muffler is not blocked, the fuel intake filter in the tank is clean but there does not seem to be any ignition regardless of what I do including pouring a small amount of petrol straight into the air intake and also into the cylinder through the plug hole. I would have thought that I'd get some ignition even it would splutter and not keep running.
With the spark plug removed and held to the engine body there is a spark. Would it be that if the ignition module was faulty, eg a shorted turn in the coil etc, it would not produce a spark when the plug is in the cylinder under pressure.
Has anyone some experience or comments on that. I have no means of testing the coil and I am reluctant to get a replacement ignition module, at the price they charge for it in our part of the world and then find that it didn't fix the problem. It's cheaper to buy a new chainsaw.
Not an uncommon problem at all. The orifices in the carbuerator body on chainsaws are TINY. They easily get plugged. Also, the gaskets and jet require periodic replacement. You can get a kit to rebuild the carb which consists of the gasket on the fuel entry side, diaphrahm and gasket on the opposite side, a fuel screen, and a new needle jet (and sometimes spring). I don't know why, but these gaskets need periodic replacement... they just do. Also, if the spark plug is old or has a build-up of carbon on it you won't get a hot enough spark. Replace the spark plug, blow out all the air passages in the carb body with compressed (canned) air, and do the carb kit and there's a very very good chance the saw will run fine. If you have a compression tester check that first as there's no point in doing the carb if the compression is inadequate... if compression is down (<80psi) pour a little 90W gear oil in the cylinder through the spark plug hole and try again. If it's good compression with the oil in the cylidner your rings are shot. Bear in mind it may need to be tuned. Start with the idle jet turned out maybe 2 turns and the high jet about the same.
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Using chain saws takes a bit of getting used to, and it can be DANGEROUS.
- The chain must be sharp to be able to cut properly, and a sharp chain "bites" into the wood.
- Before you touch the chain into the wood, you have to speed up the engine. This takes some getting used to.
- Try this technique: With the chain about an inch above where you want to cut, squeeze the throttle about half way so the chain is spinning. Touch the chain to the wood and increase the engine speed as the chain starts to cut. The harder you cut, the more power you need to apply.
After a while it gets to be second nature.
Work Safe, and get an experienced friend to help with some "hands on" coaching.
1st add fuel/oil mix to fuel tank , then top off oil tank with bar oil , place saw down on flat surface , press 'ON" button above trigger handle to ON (its marked on case) then pull out blue choke handle till it clicks and stays out , press primer bulb with thumb 8 to 10 times bulb will become harder to press as it fills carb , push chain brake forward (on) ` place left hand on top of saw and right hand on start cord , hold saw down firmly and pull cord vigorsly several times till it sort of starts (sound) , squeeze trigger in and pull cord once more , saw should take off running , chain wont move ,walk to wood pile then disengage the chain brake and cut wood , if saw fails to start after this procedure then there must be a fault in saw , consult a exp small engine dealer for repairs
A number of reasons for this, poor quaility fuel causing vapour lock, over heating due to starter cover vents blocked,cylinder fins clogged, running too lean on the carb mixture settings, fuel tank breather clogged ( slacken off fuel cap when it starts to die, if it picks up again, replace tank breather, or ignition unit breaking down when hot ( only cure is to replace the unit )
If I got your question right
1...How to oil the chain and bar...if it does not come with an auto oiler then fill a hand pump oil gun with "Bar and Chail" specially made for chainsaw bars and chains and oil the chain and bar with it while you cut your wood...give it a squirt of oil about every two minutes of cutting, adjust the lenght of time if you need to
2...type of oil...Bar and chain Oil
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Replace the fuel filter, fuel lines, primer button (if equipped), and disassemble the carburetor, clean, and re-kit. Jet needles are preset at 1-1/2 turns CCW from stops (lightly). Make sure the spark plug fires a snappy blue spark when pulled through. If nothing, ignition parts prices and availability may justify replacing the saw with a new one. If sparks ok, start the engine and let warm up. Open the throttle and adjust H needle CW till the engine speeds up, but still 4-strokes. Proper setting is when the engine will 4-stroke, but immediately 2-stroke when cutting. Let the engine idle and adjust L CW so that the engine idles fairly well, but allows the engine to 'follow the throttle' Hope this helps!