New Husqvarna 762XP Loses Power During Cut

[wmeyer116]

I have a new 762XP with about one tank of gas through it. I haven't had any issues during the first tank, but this morning I was cutting through a 16" trunk when the saw essentially became gutless and wouldn't make any power.

I was about halfway through the trunk that was on the ground horizontally and the saw was upright. When I took the saw out of the tree and revved it, it revved fine, didn't put out any smoke or anything. The chain moved easy enough, was well-oiled, and when I took the bar and chain off, the oiler as not plugged. I did notice that when it bogged down, there was some heat generated, because the wood was steaming/smoking.

When I took the bar out and revved the saw, eventually the bar got hot, but was still well oiled and the chain spun easily.

Any ideas? I checked the bar and it is not bent, and from what I could tell the rollers moved freely and the track in the bar was clean.

 

[singinwoodwackr]

Fuel starved. Check filter

 

[coffeebrk]

Chain dulled on trunk? You never mentioned anything about the chain.

 

[Big_Eddy]

I’m assuming it’s a 562xp. Sounds like your bar was pinched. What happened when you tried the next cut?

 

[huskihl]

Can’t wait for the 762 to hit the US market. Is it lithium iron phosphate or hydrogen powered?

 

[cookies]

take your 762xp back to fantasy land and return it, there is no such model available

 

[wmeyer116]

Ha, yes, 562.

The bar wasn't pinched, it just lost power. I was easily able to remove it from the tree. Next cut was as described above - no power

 

[Squareground3691]

Can’t wait for the 762 to hit the US market. Is it lithium iron phosphate or hydrogen powered?

You beat me to the punch,lol

 

[oldbuzzard]

Can’t wait for the 762 to hit the US market. Is it lithium iron phosphate or hydrogen powered?

Nuclear

 

[KTM 350]

So many questions need to be answered first.
Model 562xp
What size bar ? Bar and chain match ? Same as first tank ? Is it sharp ?
First tank of fuel from ?
Second tank of fuel from ?
50:1 40:1 what are you running ?
Fuel problem is the best call I can make for know.

What you described is liked some one straight gassed the motor . First tank from dealer no problem. Second tank 1/2to 3/4 it starts to lose power or lock up hot.

Not the first or last time I will see this problem.

 

[huskihl]

Nuclear

Nuclear =scary

 

[thenne1713]

Ha, yes, 562.

The bar wasn't pinched, it just lost power. I was easily able to remove it from the tree. Next cut was as described above - no power

Three possibilities for power loss are restricted fuel filter, bar roller tip trying to seize, or piston or ring trying to seize. Lean/ too hot can cause the piston seizure. FILTER might run fine at lower speeds, but starves under full load/ full fuel needs. This LEAN ONLY at high speed can also seize. PINCHED fuel line could mimic filter issue/

 

[Big_Eddy]

What gas was used for the second tank? Canned fuel or mix. When was it bought, how was it mixed?
Bad gas or straight gas could cause those symptoms. Different solutions depending on which.