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Allot of times this is caused by dirt plugging up the outlet. Pull the side cover that holds the bar on and clean using carb cleaner and compressed air. You should see a small metal tube or hole where the chain runs at the top, make sure it is clear. If you remove the cain and the bar you can start and rev the saw to make sure oil is weeping, it won't squirt out.
I will share with you the most common problem experienced with the model 330 with that type of symptom. Due to the anti-vibe system design of this saw, the carburetor is connected to the cylinder by a rubber "boot". Should this boot become damaged it creates an air leak and will cause the saw to overspeed and generally not run well at all. While there are other causes of this symptom, too many to list here, this is the most common with that model. Hope this gets you in the right direction.
To the best of my recollection the 330 is an older model saw and should be running about a 16:1 ratio. 8oz. of oil to 1 gallon of fuel. Hope this helps.
Note: You're always better being a bit richer (lower ratio) than you are leaner (higher ratio).
Before adjusting anything, check the fuel filter, air filter, and muffler for plugging. Check the condition of the fuel lines for decay or other damage. Tighten all carburetor fasteners. Make sure you have fresh fuel mix in the tank. Does the primer bulb pull fresh fuel into itself when pumped? Turn both jet screws CW to stops (lightly), then back out CCW 1-1/2 turns each. This is a basic setting and should allow the engine to start and run. Start the engine and allow it to warm up, then pull the throttle full on. Adjust H needle CW until the engine starts to speed up, but still 4-stroking. Proper final adjustment is when the engine 4-strokes unloaded, but immediately 2-strokes when cutting. Release the throttle and adjust L needle CW for fairly good idle, but still allows the engine to 'follow the throttle'. Adjust idle speed screw so that the chain stops turning, but the engine will continue to run. Hope this helps!
Ignition module gap Place a business or index card between the fly wheel and coil, rotate until the magnetic attraction pulls everything tight together. Tighten the coil screws, rotate the flywheel until the attraction eases and remove the card. Ensure nothing contacts when flywheel is rotated.
If you have more questions or need additional help please reply below and I will get back to you. Good Luck. HTH Lou Thank You for using FixYa.
the anti shock rubbers are worn out how do i remove them from the frame
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