Posted: 11/2/2010 10:43:07 AM EDT
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My wood splitter is acting up. Won't run. I can get it to turn over for say, 10-12 revolutions, firing away, but immediately following that it reverses rotation and backfires for the same amount of revolutions. Pouring a bit of gas down the air intake doesn't change results at all. I have to go to town for things so I'm going to pick up a new plug, but I've never had a small engine behave like this so I'm really in the dark. |
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Quoted: My wood splitter is acting up. Won't run. I can get it to turn over for say, 10-12 revolutions, firing away, but immediately following that it reverses rotation and backfires for the same amount of revolutions. Pouring a bit of gas down the air intake doesn't change results at all. I have to go to town for things so I'm going to pick up a new plug, but I've never had a small engine behave like this so I'm really in the dark. Brand and size of engine? |
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Quoted: Quoted: My wood splitter is acting up. Won't run. I can get it to turn over for say, 10-12 revolutions, firing away, but immediately following that it reverses rotation and backfires for the same amount of revolutions. Pouring a bit of gas down the air intake doesn't change results at all. I have to go to town for things so I'm going to pick up a new plug, but I've never had a small engine behave like this so I'm really in the dark. Brand and size of engine? 6hp Briggs horizontal |
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Quoted: Quoted: You may have a sheared (or partially sheared) flywheel key. This  If this happened, it would have happened when it was running last time, or when trying to start it this time? I ask because the last time I used it, it ran like a top, and this morning when I tried to start it, it was quite cold and the oil I'm sure was viscous as it was real hard to pull. |
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Quoted: sounds like a sheared flywheel key as was mentioned. The timing is way off. Don't keep trying to start it until you find out for sure, because a fourstroke trying to run backwards will eventually smack a valve on the piston.... if it hasn't already .  Noted. Thanks. |
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Kuraki, When you pull the flywheel don't be fooled by a key that looks ok. Pull the key and replace it. Sometimes they look undamaged, but you'll find a partial shear that sets the timing back slightly when the remove it from the keyway. They can be tricky little bastards. If you've never pulled a small engine flywheel go slow and be careful not to damage it during removal. They can be get sticky/frozen on the shaft. The threaded holes for your puller (if your flywheel has them) are also easy to break if you apply too much force. Good luck, and let us know how the repair goes! |
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Quoted: Kuraki, When you pull the flywheel don't be fooled by a key that looks ok. Pull the key and replace it. Sometimes they look undamaged, but you'll find a partial shear that sets the timing back slightly when the remove it from the keyway. They can be tricky little bastards. If you've never pulled a small engine flywheel go slow and be careful not to damage it during removal. They can be get sticky/frozen on the shaft. The threaded holes for your puller (if your flywheel has them) are also easy to break if you apply too much force. Good luck, and let us know how the repair goes! I appreciate the advice.  |
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Quoted:
My wood splitter is acting up. Won't run. I can get it to turn over for say, 10-12 revolutions, firing away, but immediately following that it reverses rotation and backfires for the same amount of revolutions. Pouring a bit of gas down the air intake doesn't change results at all. I have to go to town for things so I'm going to pick up a new plug, but I've never had a small engine behave like this so I'm really in the dark. Are you sure that it's reversing rotation? |
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Quoted: Quoted: My wood splitter is acting up. Won't run. I can get it to turn over for say, 10-12 revolutions, firing away, but immediately following that it reverses rotation and backfires for the same amount of revolutions. Pouring a bit of gas down the air intake doesn't change results at all. I have to go to town for things so I'm going to pick up a new plug, but I've never had a small engine behave like this so I'm really in the dark. Are you sure that it's reversing rotation? |