Hard to pull start husqvarnav435 chain saw, is there a relief port plugged

SOURCE: jonsred chain saw 455

Hi,
Sounds like the needle valve is sticking open. Could be as simple as cleaning it.

SOURCE: husqvarna chain saw rancher 55

Try this get back to us with the results.
Ignition Coil Test
http://www.youtube.com/watch?v=L7WNBDRG4C4&feature=PlayList&p=3789DC1EE87C8098&playnext=1&playnext_from=PL&index=21
You may need to use a jumper wire between the threaded part of the plug and the cooling fins. You don’t have to bend up the electrode. HTH
Lou

SOURCE: 142 chain saw. Starts but will not pick up when

Remove, clean and reinstall the muffler and spark arrestor, if no better the "L" needle may need adjustment.
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm

• CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
• Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
• Clean the spark arrestor and muffler; if the saw cannot exhale it cannot inhale.
• There are 2 wav (sound - idle & full - may not be highlighted) files that I find most helpful, I think you will too.

SOURCE: Husqvarna chain chain saw wont run.

Inspect the flywheel and crankshaft under the starter cover. Are the woodruff key slots on the crack shaft and flywheel aligned and the key intact? If not; Please consider taking the saw to a good local saw seller/mechanic for a written diagnosis before authorizing any repair or ordering parts, if yes continue.

Disconnect the spark plug wire and remove the plug (was it tight?). Remove the muffler (clean it and the spark arrestor before reinstalling), hold a light at the plug hole and inspect the cylinder through the exhaust port. Is it smooth and shiny or does it appear speckled with dull gray spots or smears?

Pull the starter slowly, inspect the piston as it rises and falls. Is the piston ring intact? Hold the light at the exhaust port and look through the spark plug hole, inspect the top of the piston, Any obvious damage?

Remove the decomp valve leave the ignition off place you thumb firmly over the hole. Better?

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

SOURCE: 142 chain saw. Starts but will not pick up when

Check the fuel lines for hardness, cracking, splitting, or end rot. Check the muffler for plugging. Check the carburetor fasteners for tightness. Are you using fresh fuel mix? If the carburetor jets have been adjusted, try turning both CW to stops (lightly) then back out each CCW 1-1/2 turns. Engine should start and run--allow to warm up. Pull the throttle full on, and adjust H needle CW until the engine starts to speed up, but still 4-strokes. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. Let idle and adjust L CW for fairly smooth running, but still allows the engine to 'follow the throttle'. Hope this helps!