Question
-------------------------
Followup To
Question -
Hello Michael,
I have a Murray lawn tractor 18HP TwinII Engine Model# 422707 Type: 1236 02 Code: 9302155B. Ok the problem is that while the clutch is pushed in and trying to put the mower into gear, I am hearing a loud grinding noise. It was running fine until I went to put it in reverse to back up a very small grade and that is when this noise started. Now it is making the noise when trying to put it into any gear. Any suggestions?
Answer -
Hi George,
I would trace the clutch linkage, to be sure it is operating correctly. When the pedal is depressed, there should be no rotation in the transmission's input shaft. If the clutch is working properly but there is still grinding, the problem may be in the transmission.
Let me know how you make out.
Michael
Ok Michael, while I have you hear, I have another question for you. We bought this mower used, and so far have replaced alot of things, like new battery, plugs, fuel filter, fuel line, and once already to the repair shop, and got a new magneto, and ignition switch. We had the mower about a week, and it was getting no spark, so thats when we replaced the magneto the first time, and still no spark, gave up took it to the repair shop for them to fix, they said it was the ignition switch, that it was feeding 12volts to the magneto and fried it. so they replace the ignition switch and put another new magneto on. We brought it home, it appeared to be running fine, but, after running it for a while mowing, I shut it off to do some trimming, got back on to move the mower, and it would not start. So after letting it sit over night I attempted to start it again in the morning and it fired right up. Any suggestions what could be causing that? It has done that again more than once, but if you let it sit after running it, and then try to start, it will start, but you can't shut it off and then restart it right away..... and now, we have the grinding noise problem? whats next?
AnswerHi George,
You will need to determine if the problem is a lack of spark or a lack of fuel flow. Right after it quits, remove the spark plug, reconnect the wire and lay
it against the engine head. Pull the engine over and watch for spark at the plug's electrode. If no spark, I would suspect the coil/magneto.
If good, then try to start it while squirting fuel or starting fluid into the carb intake. If it starts and you can keep it running by adding fuel, then the carb most likely has dirt, debris or gummed fuel inside.
You will need to remove the carb, disassemble it, clean all the small internal openings and blow it out with compressed air. Probe each and every hole with a
small wire. Adding a carb rebuild kit wouldn't hurt either.
Another possibility if the problem is fuel related: Check the gas cap to make sure it is venting and not causing a vacuum in the tank.
Keep me posted.
Michael
