Small Engine Troubleshooting Problems? Ask a Mechanic Now.
HI, my name is***** will be assisting you.
What kind of machine is this? I am having trouble getting the model number that you provide to be recognized.
What happens when you are trying to get the machine running?
Is this a P3816 chainsaw?
When it does start, will it continue to run at idle if you don't touch the throttle?
I know that you have indicated that it is about a year old. Have you checked the fuel lines to make sure that they are all in good condition, none cracked or broken even down inside the fuel tank?
These machines are pron to needing a slight carburetor adjustment periodically and I have even seen them have to be adjusted right out of the box brand new. You could try to adjust the high side screw on the carburetor but it has a special screw in that that has a splined head on the screw. The government and EPA has mandated this to keep just anybody from adjusting the machine and taking it out of emission spec.
Sometimes you can manage to adjust them with a small pair of needle nose pliers. If you can't do it yourself you may have to take it to an authorized service dealer for the product. I have seen guys try to cut a slot in the head of the screw so that it can be adjusted with a simple flat tip screwdriver. As you look at the left side of the machine where your starter is you should see two holes in the top cover of the saw. The lower hole should have an L and an H to either side of it, this is where you want to make the adjustment. The H is the one we want to focus on, if you can turn it an 1/8 turn counter clockwise it will most likely solve your problem.
If you can do the carburetor adjustment it will only take a very slight turn of the screw.
It does sound like the high side screw needs to be adjusted out just a little bit. Again an 1/8 of a turn counter clockwise is probably all you need.
Thank you it has been a pleasure to assist you.
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