20 Most Recent Homelite Mighty Lite Lawn Trimmer Questions & Answers


Bulb or fuel line could have a crack or a clog in fuel line/filter or carburetor. Here's a video on how to change the bulb and fuel lines and another video on how to clean/rebuild the carburetor.

Homelite Tune Up


Homelite weed eater gas trimmer will not run how to rebuild weedeater...

Homelite Mighty... | Answered on May 04, 2019


The timinmg is preset by the permanent keyed slot built into the inside of the flywheel where it mates with the crankshaft. If the key was broken off, you would get No spark because of the nature of the magneto ignition. Your compression is actually pretty low for a 2 stroke. It should run higher like around 90+. Try this. With plug removed, cover plug hole with thumb and give the pull start a real strong pull. It should push your thumb off of the hole. If it doesn't the compression is too low for the engine to run. Scored piston walls, or cylinder walls could be the problem. Again 60PSI is really low. I would remove the jug and check for piston scoring and cylinder scoring. The engine can be easily rebuilt (but not real cost effective).

Homelite Mighty... | Answered on Mar 06, 2019


Reverse blow carb. Cleaner through the filter blow in same direction with compressed air and should be good for many more years that is if you clean tank completely with carb. Cleaner and compressed air and check all fuel sources. If fuel is a bit dirty place paper napkin or rag in funnel and use as filter when adding fuel.

Homelite Mighty... | Answered on Feb 06, 2019


I have some parts manuals.

Homelite Mighty... | Answered on Feb 06, 2019


Need to know model number.

Homelite Mighty... | Answered on Feb 05, 2019


Had same problem with my reconditioned unit. After a few hours engine would run only with 1/2 choke and full throttle. Like most 2 cycle engines, the unit was starving for gas.

Solution: Adjust both carburetor screws. These screws are located directly below the idle adjustment screw. There are 2 of them side-by-side and they are approx. 3/16 diameter with an oval shaped cast metal raised restricter. Simply remove the plastic round air filter by removing the small nut. Then, using a Dremel tool while wearing safety glasses, cut a slot in the face of each screw. Cutting through the raised cast metal surrounding the screws will not damage the unit. Then using a small flat blade screwdriver, screw each screw clockwise till it stops then back-out each screw 2 turns. Factory setting is 1 - 1/2 turn each. However, the unit over time runs too lean with the factory setting.

Then start unit, let warm up with 1/2 choke, then turn to run position and make any final adjustments.

Making this adjustment, I am once agin able to trim my yard in the idle position. Runs Great !!!! Hope this helps.

Homelite Mighty... | Answered on Sep 17, 2018


The 6.5 powerful motor and powerdrive transmission allows the maximum performance. It has a 13 inches cut path that cuts the toughest weed and gives your lawn the perfect tidiness.

Homelite Mighty... | Answered on Jun 07, 2018


Hello! Trimmer Line Installation; Place Trimmer On Workbench Or Floor, Grasp Trimmer Housing With Left Hand Turn Middle Nut With Right Hand,Left To Right Removing Center Peace,In Some Models Suchas Electric Models The Center Piece Just Snaps In.Remove Nut Remove Line&Spool,Bottom Caseing.If Spool&Inner Housing Is Dirty Cleam With Soap&Water.Pay Attention How Line Is Inserted Through Spool,You Will Need To Reinstall Same Way.You Will Need About Twenty Feet Of # 60 Or 65 Line.Buy Line At Any Home Improvement Center. Most Trimmers Are Double Lined.Find Middle Of Line,Thread Through Holes That Old Line Came Out Of.Wind Line Accordingly To Arrows On Spool Edge. Leave Enough Line TO Insert In Groves On Edge Of Spool.Reinstall Spool Put New Line Through Holes In Outer Housing Pull Line Until Line Is Free.reinstall The Rest Of Parts In Reverse.Hope This Helps,any comments welcome,thank you, ii

Homelite Mighty... | Answered on Jun 06, 2018


try running on full choke until it warms up.

Homelite Mighty... | Answered on Jan 02, 2018


will have to have the carby diaphragms replaced as the float diaphragm and the pump diaphragm are faulty

Homelite Mighty... | Answered on Dec 06, 2017


Try going to ebay and finding a carb for the model, some are as cheap as $12.

Homelite Mighty... | Answered on Nov 21, 2017


Go to homelite.com, ordering parts, locating parts, select Homelite, select string trimmer, then find your ut number which will be your model no.

Homelite Mighty... | Answered on Oct 29, 2017


Go to youtube.com and look at Michael McGill's video on replacing homelite stringtrimmer string, this is possibly your type.

Homelite Mighty... | Answered on Oct 29, 2017


You can try: http://www.manualsonline.com/
Of course their user manual downloads are free.

Homelite Mighty... | Answered on Jun 25, 2017


good that you fixed the problem
but to be fair , you would not have mentioned that it sat for a long time before you went to use it

Homelite Mighty... | Answered on May 13, 2017


sounds like the card needs to be cleaned thoroughly.

Homelite Mighty... | Answered on Apr 27, 2017


In the USA it's often called a stone. It's basically a fuelfilter.

Homelite Mighty... | Answered on Oct 19, 2016


My UT21546 has 2 springs, the regular recoil one and a what I'll call a anti kickback one. the top of the anti kickback spring kept coming unsecured and finally I just deleated it alltogther and screwed the 2 plates tightly togehter and the near new unit works better than new now.

Homelite Mighty... | Answered on Sep 01, 2016


may need a tune up--check air filter change if necessary,check and clean he exhaust screen.plug if fouled --fuel mixture --carb may need cleaning or rebuilding

Homelite Mighty... | Answered on Aug 16, 2016


Removing old fuel line/disassembly
  • Empty petrol tank
  • Use a hooked/bent piece of wire or similar to get fuel line and filter out of petrol tank filler hole
  • Remove fuel filter from end of fuel line
  • Remove air filter housing
  • Remove choke control/ plate from carburettor
  • Ease old fuel line from carb. inlet. And clean inlet tube if necessary
  • Gently but firmly pull old fuel line through hole in base of tank
Fitting new fuel line
  • the new fuel line has too big a diameter to fit through the hole in the base of the fuel tank.
  • To get round this I heated the end of the tube with a lit match (but a blow torch or gas ring would do) until it was soft enough to fashion into a point- take great care the plastic obviously gets very hot and could burn ***** flesh. The tapered end you form should be at least 1cm long. Allow to cool
  • Trim off the end of the tapered point if necessary
  • My next problem was to get the tapered end through the tiny hole inside the fuel tank. To help with this I took the innards out of a standard biro then put the fuel line through the empty tube with the tapered end projecting from where the ballpoint used to be. Push the tapered end through the hole inside the tank.(a torch was useful here to help see inside the tank)
  • Pull the fuel line through from below the tank until you have enough to push on to the fuel inlet on the carb.
  • Cut the tapered end off the tube and push onto the fuel inlet .
  • Cut the other end of the tube so there is enough length to reach all parts of the fuel tank.
  • Attach fuel filter and push it into petrol tank
  • Refit choke plate and air filter housing

Homelite Mighty... | Answered on Jul 08, 2016

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