Husqvarna 450 e-series 18" Chain Saw - Answered Questions & Fixed issues

Verify carburetor linkage and throttle shaft are not sticking (remove linkage as a test). The intake and carb assembly are several components. There can be no air leaks at any point downstream of the throttle plate. Check mounting screws are properly torqued. Could also be crankcase leak. Check fuel tank is not building pressure (remove/loosen fuel cap as a test).

Hi. Beside where the fuel line go through there should be a small nut with a spring beneath it. Turn that slightly to allow more fuel through. ONLY DO IT A FRACTION AT A TIME.

450 does not have a cylinder head. The cylinder assembly is one piece. The cylinder assembly is connected by 4 bolts installed from the bottom of the saw.

Check to see if the primer is split or leaking. Then check your fuel filter and fuel lines. If all are clear and no leaks, the only other issue would be carburetor or lines installed incorrectly.

There is not much wiring on the 460. The coil has the lead to the sparkplug, then there is the ground (kill) wire running to the switch and grounded to the engine.

The adjustment handle snaps down to lock. If the handle is coming loose, I recommend replacing the handle. You can also go to standard bar bolt set up if you prefer. Check with your Husqvarna dealer for part numbers.

Pretty sure it is 50:1. You can check right at your Hardware BOX store on line to verify that. The "Blue" one in the US especially.

check oil pump, oil pump drive gear, and rubber oil guide tube isnt blocked

Have you got chain brake on

ask husqvarna Sweden ( the can answere you in your language

you tube has video's on how to do this

The primary jet is probably clogged. If you remove the fuel bowl and float assembly you should be able to slide a fine wire through the orifice to clean it. Rinse everything with carb cleaner before reassembly.

If the choke is not fully opening, that would cause this problem check this first.

the oiler is not adjustbale.

chain oil is not ajustable. the pump is most likely faulty or the oil ports blocked.

remove the two nuts on the cover and loosen the screw at the base of the bar on the engine. This tightens and loosens the bar. But makes it easier to remove the bar. Pull the bar out away from the engine and then toward the round thing where the chain is around the slip the chain off of the bar and engine and pull the bar off.

check for spark check fuel filter carb kit if sitting for while new plug

Ask to see the sales receipt if you are in need of proof of purchase date. Even contacting Husqvarna to ask when it was registered may not be the actual purchase date. I saw a question not long ago about a saw that was purchased new that had been out of production for a couple of years. It is possible it sat on a dealer's shelf for a period.

Looking at the serial, it was manufactured in 1998, the 51st week (Dec), and was the 4th product that week.
HusqvarnaUSA.com
http://www.husqvarna.com/us/homeowner/support/download-manuals/
Enter the 3 digit model number (no XPs, Es, just the numbers)
Serial number decode – useful when downloading IPLs and Manuals
06 1500198
06 = year produced – 2006 (single digit year please contact Husqvarna for clarification)
15 = week produced – March
00198 = 198th unit Husky produced that week

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

If the chain brake is on and the sprocket cover is off the saw, they are a pain. You need to grip the clutch housing while turning backwards the tri-star \'cog\' in the inside of the sprocket cover. Ive done it in the past by holding it in place over the chain brake handle so the cog\'s line up and pulling the handle back in the off position. Failing that you might be successful using a pair of 90 degree circlip pliers.

Here is the page from the illustrated parts manual