Experienced gardeners share their insights in answering this question :
Depends on the make and model which you haven’t stated. But I could make a guess if you’d like. Anywhere from 13mm to 19mm
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To measure the chain size, if you have just the sprocket, use calipers to measure between the teeth. Measure from center to center of where the chain roller would set between the teeth that will give you the pitch. Once you know the pitch you can determine what chain size you would need.
Modern chainsaws run two different types of sprockets; spur sprockets and centre drive sprockets.
– Roller diameter 3.30mm.
The sprocket size represents the first two digits in the chain designation. Example: 40A14 is size 40. The number of teeth represents the last two digits in the chain designation. Count the number of teeth.
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How do I remove the clutch on an Echo chain saw??
Backwards to the rotation of the motor, all you need are basic tools to do this.
I have a Poulan chain saw (PN 4620) can you tell me the size of the file to sharpen the chain. Thanks
3/8 low profile chain requires a 7/32 file
I am having problems with the chain coming off the guide rail of a Husqvarna 345. A new rail and chain was put on the saw recently. When the chain came off last time I noticed a lot of wear on the teeth that sit in the guide rail – in some cases the teeth were almost worn away altogether. The chain is getting oil. What could be causing this – I am wondering if the chain should be tighter.
It is possible that the clutch sprocket teeth are badly worn causing extra wear on the drive teeth of the chain. Remove the bar and chain to check the sprocket–you can determine the wear by comparing the area where the chain runs to the edges of the sprocket that are relatively unworn. If the sprocket requires replacement, the chain should be replaced as well. The chain normally should be loose enough that the chain can be moved by hand, but it should not droop from the lower bar edge. Check the chain oiling by running the bar tip at speed near some cardboard–it should throw off a thin line of oil after a moment or two. There should be an oil volume adjustment screw located on the under side of the case near the chain return area–turn CCW to increase flow. Hope this helps!
My 340 (,98) saw blade was dry while cutting, I shut down. I believe it is the oiler, idea’s? js
If the chain is dry it has stopped oiling, remove the bar and clean out the bar groove and oil hole in the bar, there is a filter in the oil tank, to acess this you need to turn the saw upside down, look between the crankcase and fuel tank ( guide bar side ) you will see a cross point self tapping screw, this is retaining a plastic pull out filter, once the screw is out you may need to grab the filter with a pair of long nose pliers to remove it. There is also a drive gear driven by the back of the sprocket, this will require removal of the clutch to acess the gear. To remove the clutch put the screw driver side of the combi spanner supplird with the saw into one of the cut-a-ways in the clutch spider and jar the clutch off usibg a hammer to strike the other end of the combi tool, the clutch is just spun onto the crank, left hand thread.Good luck
What size file do i need to sharpen the chain on a poulan wid thing?
I have the same saw. It takes a 5/32 file.
What size file for a 20 in. saw ? – Husqvarna Chain Saw 20" Bar
3/8 chain uses a 7/32 file, and .325 chain uses a 3/16 file, unfortunatly both are available in 20″.
What Size File for a Husqvarna 240 Chain? – Husqvarna Chain Saw 20" Bar
The 240 runs standard a 3/8 ” pitch H36 low profile chain. The proper size file is 5/32″ (4.0 mm)
Chain saw chain is loose
Loosen the side cover nuts, then turn the adjuster CW to bring the chain up to the lower edge of the bar, then check to see if the chain will move fairly easily by hand. Tighten the clamp nuts and recheck tension. If chain seems to get loose quickly again, it may not be sharpened correctly causing heat to build in the chain. You should see no reflection of light from the cutting edges if filed correctly and the saw should require very little pressure for it to cut rapidly. Hope this helps!