Weedwacker not use 4 3 months can't started it

1.You have to remove the air filter *** cover.
2.Remove air filter.
3.Remove 2 screws, to remove the rest of air filter ***.
4.Remove the 2 fuel lines with a long nose plier.(Take a photo of
the position of fuel lines or mark fuel lines for reassembly)
5.Unhook the throttle cable.
Now to fix the Carburettor
1.Remove the 4 screws on primer bulp side of the carburettor.
2.Open the carburettor and clean with paint brush and clean fuel.
3.Replace diaframe kit(available from your nearest dealer) and reassemble the trimmer.

air leak around crankshaft, scrap it and buy a new Stihl.

Most weedwackers are 2 cycle (stroke) engines, meaning the gas and oil are mixed together before you pour it into the gas tank. If it's a 4 cycle engine it appears there is no dip stick or convenience way to check the oil, you can only replace it. Here's a youtube video that may help.

http://www.youtube.com/watch?v=eiu6zd460oc

hello sir,routing fuel line for craftsman,homelite,ryobi,hedge and line trimmers,fuel tank under engine, looking at machine from rear, shall fuel line on left with filter attached goes to bottom port of carb, fuel line from right side coming out of tank with inside tip attached goes to bottom port of primmer bulb,top line on primmer bulb goes to top port of carb, fuel tank under engine,fuel line routing,looking at machine from left side, left fuel line coming out of tank(drain back only) goes to right side small port of primmer bulb, left side larger fuel line from primmer bulb to top port of carb, fuel line coming out of tank (larger line) on the right side with filter attached goes to bottom port of carb, when replacing fuel line it is very important to use the same ID and OD line the homelite takes a special line that is black in color and a bigger size,the bigger line is ID .08-OD140 small line ID3/32 X 3/16.when the lines dissolve small pieces will get in the carb clogging small passages and screen,it is advisable that you clean out carb,and use a new filter.hope this helps,any comments welcome,thank you. if the filter has broken off of the line half way that is where you will run out of fuel, oo

MORE THAN LIKELY YOU HAVE BEEN USEING ETHANOL FUEL NEED A METANOLE FUELCLEANER AT MOST AUTO PARTS SUPLYER THEY SELL A FUEL CLEANER FOR SMALL ENG. IF NOT THAT MAKE SURE FUEL LINE IS NOT CRACKED

Do you have compression,good spark and is fuel going into the cylinder.? More information is required

SAE 30 during the warm months, and 5w-30 during the cold months.

Jim

Hi and welcome to FixYa, I am Kelly.
Craftsman manuals are avalable for all models on this site:

http://www.managemylife.com/mmh/owner_manuals

You must have your model number

Note the model numbers on this page:

http://www.managemylife.com/mmh/owner_manuals/search/product_type.Line%20Trimmers:Weedwackers,%20Gas?query=27cc+Craftsman+trimmer

Once you enter your model number you click on "Get Manual" and then save as to your computer.
Thanks for choosing FixYa,
Kelly

Should be able to google model #. Make sure you have a 40:1 fuel oil mix. Pump primer bulb 4-5 times, put on full choke, when attempts to start set choke to half. After it starts open choke. If won't start and has been sitting for months with fuel in it, the carb is more than likley gummed up.If you paide less than $100.00 for it it is not worth having it repaired at a shop. You can although purchase a new carb at eparts, or sears parts direct for around $ 30.00. Just need the model#. Good luck.

the problem is the spindle may snap