STIHL MS 170 180 Chainsaw Oil Line Replacement
Oil leak is a common problem with chainsaws. Take Stihl MS170 180 as an example, here is a step-by-step instruction on how to replace the oil line that fits the oil from the oil tank to the bar and chain on the Stihl MS 170 180 chainsaw.
Symptoms
If you have a puddle of oil or what your sitting your saw on is stained with bar oil, it could be that the oil line is leaking nine times out of ten. Usually the line of the saw is located under the handle, and you can see some oil that is being dripping from where it connects onto the chainsaw. So there is no doubt that is the problem. This will happen after you have used your saw and you are storing it. Sometimes the oil tank is empty as well as you can see there is fresh oil that is leaked out.
Replacement
Step 1: Remove the bar and the chain. First of all, you need to take off the clutch cover. Then you have to loose the chain tension to make it easier to take off the chain and the bar.
Step 2: Remove the top cover. On MS 180C, you need to turn the screw to the left, put the choke knob down, press the trigger of the throttle, and push the lever down. Now you can just remove the top cover. The reason why you need to take the cover off is to remove the throttle linkage from the handlebar assembly.
Step 3: You can see the throttle linkage that is hooked up to the carburetor mechanism after you remove the air filter housing. You have to disconnect it from the slot to remove it and you’d better remove the linkage totally from the saw.
Step 4: Now remove the buffer along with the handle. You need to remove the three buffer caps that are on MS180C firstly. It is more convenient to use two flat screwdriver to pop the caps out. Then you can use a bigger flat screwdriver to pry the buffer out.
Step 5: Drain the oil out from the oil tank. You can start by removing the oil line after you have drained the oil out. You can use a slotted screwdriver and try to pry the oil line out of the tank.
Step 6: Disconnect the oil filter. Now you get the oil line that you are replacing. Sometimes the rubber deteriorates over time or it gets harder and it does not make a tight seal.
Step 7: Reinstall a new oil line. You can start by connecting the oil filter at the end of the line and pushing it in as far as you can.
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