Question about Craftsman sears 18" Chain Saw Chain ( Model 35084 )
Remove the bar and chain. Lay the chain out on a bench or table and examine for sideways bent/broken links, badly damaged cutting teeth, or damaged drive teeth. Inspect the bar chain-groove all the way around for any damage. Make sure the tip sprocket turns freely and is not damaged. Check the sprocket on the clutch drum for hooked teeth or other damage. Clean the small oil passages that feed oil out to the chain groove in the drive end of the bar. Start the engine and check the engine side port where the bar fits to--it should ooze out oil from the small port there. If everything checks ok, re-assemble the bar and chain leaving the cover fasteners finger tight. Adjust the chain until it pulls up to the bar, but not so tight that you can't turn turn it by hand. Tighten the bar fasteners and re-check the chain tension. Start the engine and hold the bar tip near some cardboard--it should throw off a thin line of oil after several moments of running at speed. Hope this helps!
Posted on Jul 18, 2010
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Posted on Jan 02, 2017
First thing I would do would be to loosen the thumb screw fully so the chain is as loose as you can get it Next, loosen the chain bar and pull it out as far as possible which will take up the slack in the chain itself. Re tighten the chain bar. Afterward, you can perform detailed adjustment on the chain by playing with the thumb screw.
This solution has always worked for me and my various chainsaws.
Posted on Apr 12, 2011
SOURCE: chain came off
Pull side cover at rear of bar--clean everything including cover with compressed air including air vent holes around the motor case. Pay attention to two small holes in bar (one on each side) which deliver oil from motor frame to the chain slot in the bar. Only one hole is used at a time depending which side up is used when installing the bar. Lay the loose bar on a flat surface to see if it has been bent sideways (it will rock back and forth). Do the same with the chain (remove any cross-over loops). Replace one or both if apparently bent. Check original chain for any lengthwise looseness and check sprocket which drives the chain for excessive wear on teeth. Run the saw without bar and chain for short time to see if oiler pumps oil out of port. If everything looks ok, thread the chain onto the sprocket with teeth cutting-edges pointing toward the case on the bottom edge of the bar. Fit bar into extended chain and work under-side of chain into the bar slot all the way around (except rear of bar), then extend bar to pull chain fairly tight. Next, fit cover to case ensuring that adjuster tang is in the proper hole at the rear of the bar (may have to turn adjuster screw CCW several turns) and fits flat to case. Install bar holding nut(s) hand tight, and then adjust chain adjuster CW until chain holds tight to under side of bar, but still free to turn chain by hand. Tighten nuts firmly and recheck chain. Put some oil into small holes near tip sprocket (if any) to lube sprocket. Finally, run saw with chain tip near paper or cardboard surface to check for slight oil line appearing off of the running chain. Check and resharpen chain teeth if required.
Posted on Jul 08, 2009
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