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Replacing the fuel lines in a 31 cc (model 780) trimmer

I am replacing the fuel lines in my 31 cc (model 780 I think) trimmer. The main line has a filter in the tank with an extension that goes out the hole, onto which the line must be pushed. There's got to be some secret way to do this! You can't really get to the filter in the tank to hold it in place while you push the line on from outside, so I assume you thread the line up into the tank and out the fuel filler opening, then push the filter into the line, then SOMEHOW pull or push it out the hole. Anybody know the official procedure?
..Ron

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Hello harper6rm:

The Following is a Basic Instruction File I made for Replacing the Fuel Lines and the Filter on Chain Saws and Trimmers. Any Input is Appreciated.
>>The Fuel Line is Pushed and Pulled (I Use Long Needle Nose Pliers) Through the Small Hole Until the Hose is Out the Fill Hole about a 1/2".
>>You can Also Use a Coat Hanger with a Small J at the End to Hook the Filter in the Tank and Pull the Filter and Hose (if Detached from the Carburetor) Out the Tank Fill Hole Enough to Replace the Filter.
>>Then Attach the Filter and Pull the Hose Back Until the Filter Lays at the Bottom of the Tank Just Below the Fill Hole (or so it is in the Bottom of the Tank and will Rest in the Fuel Mix when Turned at Common Angles the Unit May be Turned to During Operation.
>>**Hint: Use Plenty of Spray Lubrication at the Small Hole as you are Feeding in the Hose. It Slides Easier.**
Please, Do Not Hesitate, If you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck

Respectfully

jbridger (John)

Posted on May 13, 2009

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Posted on Jan 02, 2017

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