My Husqvarna 351 starts then stops after 1-2 seconds
Once the saw cools down will it restart and run fine? There are a couple other solutions that are not directly due to carburation. The first two solutions above are definitely your first options.
1. Ignition Coil: Highly unlikely, but possible. I seen some where they get hot and run fine while cutting, you shut it down for a few minutes for whatever reason and it won't restart or starts and stalls.
2. Crankcase Air Leak: We started to see more and more of these issues. There are a couple of quick ways to test this if you do not want to pay a shop to do an actual test. You want to do a cold test and a hot test. With a half tank of fuel, start the saw up for the first time of the day. While the saw is idling, turn the saw sideways from right to left, do this slowly, listen to the saw idle, if the speed changes by increasing or almost stalling, you have a crankcase air leak. Most bad air leaks won't be noticeable until the saw has gotten hot and the aluminum crankcase starts to expand a bit. Do the same thing once the saw has gotten hot. If this happens when it's hot, chances are that it won't start or starts and stalls until it cools down and everything retracts.
Sporadic idling when cold: Most likely just the oil seals, fairly inexpensive repair.
Sporadic idling when hot: Most likely crankcase itself is leaking, requires a complete crankcase gasket replacement. Can be fairly expensive to repair.
Apr 13, 2014 |