Husqvarna Rz5424 Zero Turn Lawn Mower Kohler Courage Engine - Page 2 - Answered Questions & Fixed issues
Where to get rings for Husqvarna 145bt?
The problem is that the engine is a funny size at 40cc. If it was 50cc, you could get away with motorcycle rings. The normal way to size rings is by measuring the bore with an inside micrometer across left to right and then again front to back. The front to back measurement is often a little more worn. Then you order rings by diameter and thickness, Any local engineering company can do this and supply you with generic rings.
There is a different model here with rings at $25 but Jack's Small Engines is $57. My advice is get the OEM ones. You will also need to hone the bore lightly to dull the polish. Oil the new rings with 2 stroke oil when fitting them.
https://www.google.com/search?q=husqvarna+145bt+piston+rings+size
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Husqvarna 125b keeps flooding and will not start...why?
Weak spark or no spark or spark at wrong time. Do not use a neon type spark tester as it will indicate spark when it is insufficient. Use an inline gap type tester.
To test for spark, compression, and timming, drain all the fuel, choke off and give the the starter several pulls. If the plug is wet, leave plug out and give it several pulls, reinstall plug and give it several pulls, then check plug. Repeat until all residual fuel is gone and plug remains dry.
Now that all fuel is gone you can use an alternative fuel, i.e. starter fluid, that won't flood the engine.
Air filter removed, hold throttle open and spray a 1 second burst directly down the carburetor throat, release throttle. Leave air filter off and promptly attempt to start, several pulls. If no fire then it's likely a spark or compression issue, not the carburetor.
If it fires and runs for a few seconds, then timing, compression, and spark are OK and carburetor remains suspect.
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Husqvarna 235r brush cutter intermittent
Did you have the problem before replacing the filter and lines? You may have a fuel blockage inside the tank. Make sure you have a good gas flow to the carb. Dirt or other material may be in the causing the carb float to let too much fuel in. A bad air filter will cause the carb to run rich. Possible a bad spark plug or the spark is weak to the plug.
Husqvarna YT46LS will not attempt to crank when turning the key
Wiring diagram is in the parts list, a no fee download from the Husqvarna web site. See following URL
https://www.husqvarna.com/us/search-results/?groups=DOCUMENTS&q=Yt46ls
The start solenoid control side winding has two conductors, WHT and BLK. BLK is the return to battery negative. WHT is fed fused battery positive from the ignition switch through the PTO switch thru Brake switch.
Suggest you use the volt meter referenced directly to the battery negative post or clamp. Probe the ignition switch "S" contact WHT wire. With switch in START position the S contact must be battery positive which in turn means the WHT wire must be batt pos. Then follow the WHT wires to/thru the PTO switch, to/thru Brake switch, to solenoid.
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