Homelite HLT25CS Questions & Answers

Not starting

Possible causes include: old / dirty fuel, blocked carburettor jets, faulty coil/lead/spark plug, faulty kill switch, or switch in 'off' position, cracked fuel line, cracked carby diaphragm, stuck needle valve, coil too far from flywheel. There are others such as low compression from broken or worn piston rings or damaged cylinder wall. Work through this list and hopefully you'll figure out the problem.

You’ll need to remove the shaft and cover to access the spool and spring. It’s possible that the recoil spring has broken and is not holding on at both ends.

Cheers John , ta

Replace plug clean carb, the 2 most common faults.

It’s a 2-stroke motor. Mix in with petrol.

It sounds like the clutch is damaged, very fixable but it will probably cost more in the parts required and labour if you are unable to do the work than the machine cost.

Thanks John, I just saw the reply, if you have the details could you please copy and paste so I could try to fix it. Appreciate your reply.

They don't come with bump heads from new, they use a single strand cutting cord which you thread from side to side through the holes, the cord is available at Bunnings. You can however buy a bump head for the next model up at Bunnings,$20 something dollars which fits straight on tin place of standard head which comes with speed load, you just feed a piece of cutting cord 3m long through from hole to hole, even out the length of cord on both sides and turn base anti clockwise to feed it into bump head. Hope this help.

It’s standard binary code for on/off with computer microprocessor programming code. 1 is signal on and 0 is signal off.

Thanks

Blocked idle tube in the Carby

What fuel do I use for the HLT25CS

50:1 is what is listed

Have you been pumping the primer bulb when hot 10 times like recommended? If it is the coil and it's a Kasei try looking for a similar coil, many lawnmowers,chainsaws and whipper snippets all use similar coils. I will look for an alternate for you just give me a couple of days.

It will come from China regardless, this is an eBay listing for Ryobi/Homelite; Replacment For Ryobi Ignition Coil 291337001/RY251PH/RY251PH/25CC String Trimmer

Have tried pumping the primer bulb when hot but no luck getting it to start. Have checked the spark at the spark plug when hot and it appears weak so it appears to be a coil problem. Thanks for your info I will follow it up and keep an eye out for any following information. John S

What are you meaning by “fittings”? Can you be more specific please?

Ya, the 2 fuel fittings on the carby, which fitting connects to the fitting with the filter in the tank, the second is just the fuel return to tank I think? Thanks, don

The fuel pickup is the lower connection on the carby, the upper one is the return to the tank.

OK,THANKS MATE,CHEERS

Yes you can from the nextodel up, readily available alongside cutting cord

The diagram I have shows the trimmer has 2 hoses a black one and a yellow colored one the filter is shown on the longer black hose.

both of my hoses are black on mine

Bottom fitting on carby is from tank top fitting is fuel return.

With difficult as it is 2mm hose and you have to lift both filters out of the tank, feed new hoses in from carby side of tank then grab them out to replace filters back on, make sure you keep the from tank line longer to reach bottom of tank.

Please check the fuel is 2 stroke mixture correct ratio, spark plug is clean and lead is connected properly, also check air cleaner is fitted correctly and clean, prime the carburetor with fuel using the bulb, give a few pulls on the starter cord with the coke on, then try with the choke off and the throttle held open, if it will not start return to the store of purchase or a suitable repair store. Cheers mark.

Hello, Once you have the unit running properly without the choke on if you pull the throttle and rev the motor the head should spin to cut the grass, use the unit at full throttle when bumping the head to advance the cord. Cheers Mark.

Make sure kill switch is ON, There is correct fuel mix (50:1) in the tank, squeeze the primer bubble on the carburettor 3-5 times to ensure the carb has fuel in it, move choke lever to closed position, pull starter handle. The first time it fires, stop pulling the starter and move the choke lever to about half choke position, then pull starter handle again. It should start and run. After 10-15 seconds you should be able to move choke lever to fully open position and go to work.