Craftsman
Brand new. Worked one day, then the next day would not start. Starter not engaging the engine.
How to Identify and Fix Common Gardening Problems ?
We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :
The most common problem with a string trimmer is that the unit runs out of string. The string may also be twisted or loose on the spool. The cutting head may be dirty or the head outlet guide may be bent. An electric trimmer`s power cord, switch, or motor may fail.
Checking the Fuel Mix
The most common problem with a strimmer not starting is that there`s a problem with the fuel mix. Double check that you`ve used 40 parts fresh unleaded petrol to 1 part 2-stroke oil (40:1). Check the petrol you`ve used isn`t stale.
If your trimmer won`t turn on, especially if it has not been used recently, you may simply have a drained battery. Plug your trimmer into your charger and see if anything happens. Ideally your trimmer will recognize it has been connected to a power source and charge its battery.
If the engine is not revving up and cuts out before you reach higher revs then you need to do the following checks: Fuel: Make sure it is fresh and correctly mixed (see `Starting Issues`). Air filter: Make sure it is clean and unclogged. Fuel cap: Make sure it`s hand-tight.
If your trimmer engine idles, but stalls on throttle, check the following parts: the gasket, primer bulb, fuel filter, air filter, fuel vent, fuel line, and carburetor. The repair and symptom guide will help you better identify the part needed to be replaced and how.
An almost totally blocked spark arrestor screen on a two-stroke, air-cooled engine can cause the engine to overheat. The result is that the piston expands into the exhaust port and the engine seizes. The piston scored because the engine was unable to dissipate heat fast enough.
Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.
When your trimmer starts and runs on choke, it could be because the check valve in the gas cap is clogged. Start the trimmer and gently unscrew the gas cap halfway off. Turn the choke off and assess. If the engine is still running, that means the gas cap may be the culprit.
A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and prevent the engine from starting.
So, an air filter might clog over time. Once blocked with dust and debris, it cannot supply the required amount of oxygen to your trimmer` engine resulting in power loss. Find the air filter, take out this component, clean and reassemble it. Replace the part if you cannot reuse it.
A worn, dirty, oily, or improperly gapped spark plug can cause a weakThe job of the spark plug is to ignite the air/fuel mixture. A worn, dirty, oily, or improperly gapped spark plug can cause a weak spark, which can misfire or detonate and cause a loss of power.
A clogged carburetor is most commonly caused by leaving fuel in the string trimmer for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and prevent the engine from starting.
Discover Relevant Questions and Answers for Your Specific Issue
the most relevant questions and answers related to your specific issue
Hi i wonder if you can help my Ryobi hedge trimmer has a problem with the pull cord it works goes in and out but it does not turn the engine over is there maybe a key way or something that maybe broken ??
many thanks
Nick
many thanks
Nick
ANSWER : Hello Nick,
Inside the cord attaches to a plastic wheel which cranks the engine. This cord can become loose or can break after some use. Try opening the plastic casing where the cord is to see if this is the problem.
Thanks
Read Full Q/A … : Craftsman
Gas leaking out of center hole on gas cap sears weed trimmer 358795150
ANSWER : I had same problem and got a replacement cap at a small engine shop. Seems there is a baffle in the cap to allow the tank to vent and to close off to prevent fuel leaking. Appears rubber baffle deteriorates over time.
Read Full Q/A … : Craftsman
Can not get spool head apart to change line, tried pump pliers, pipe wrench, won’t unscrew!!
ANSWER : If you are sure that it screws on it may be a reverse threaded unit..
Read Full Q/A … : Craftsman
Do you mix the gas and oil together with the Troy-Bilt4 cycle TB575SS. Lost directions. Thank you
ANSWER : No. You do that for a 2-stroke engine. Your engine should have oil in the crankcase and you just need to check the level of it and add gas to it like a regular lawnmower engine.
Read Full Q/A … : Craftsman
Crastfmas 4 cycleonly run on choke, and only at an idle. press
ANSWER : You need to clean the carburator of varnish from the oil/gas mix,over time and especially if it has set with gas/oil in the lines it will create a varnish buildup and plug the fuel lines,another thing is to remove the muffler which can get carboned up from the same oil/gas mix during combustion and block the exhaust port and create back pressure and cause loss of power to throttle
Read Full Q/A … : Craftsman
Auto feed doesn’t work
ANSWER : Take the end apart and make sure the line is not getting bound up or is not over filled to where it can not move freely
Read Full Q/A … : Craftsman
I need to replace to fuel lines on a Craftman 32cc trimmer. The old ones cracked apart. 2 of the lines look like 1/8″ OD one line looks like 3/32″ OD. Larger line looks like it hooks to filter, Smaller line to a fitting in the gas tank. I am assuming the smaller line ges to the primer inlet. My question is the lines penetrate the bottom of the gas tank. How do they seal. How do I install the filter and the fitting. I am assuming to thread the new lines in from the bottom of the tank and pull through the gas cap hole. Then I attach filter or fitting and pull back through. So do I pull the line so as to create a seal from the swell caused by the fitting/filter?
ANSWER : Depending on the brand of line you use, Tygon line is self sealing but seems to shrink faster then factory supplied because of the ethanol in the gas. The stone gas filter is designed to fall to the lowest part of the tank, not stop the line from falling out.
Read Full Q/A … : Craftsman
Troy built 27cc string trimmer Model TB21 EC. What is the gas oil mix ratio?
ANSWER : The TB21 is a 2 cycle trimmer, not a 4 cycle. Gas mixture ratio is 40:1Be careful not to over add oil and or run it on straight gas the sparkplug will foul with too much oil, and overheat and seize the piston in the cylinder onstraight gas.
Read Full Q/A … : Craftsman
