545 Mark II slight bog while warming up.

[Fordiesel69]

I was wondering if this is normal as my 2021 build 555 does not do this. It runs 100 percent rock solid.

My 545 mark 2 is low hour but I did aquire it used. When engine is stone cold, and full hot it runs flawless. However there is a slight bog during acceleration I would say when the engine is in between cold and hot. It happens one time and you just power thru it, and it clears up and never comes back until the next full warmup cycle since stone cold.

I hope I am explaining this right. It's like the autotune is a little off only when engine is at middle temp.

 

[The Nor Way]

I was wondering if this is normal as my 2021 build 555 does not do this. It runs 100 percent rock solid.

My 545 mark 2 is low hour but I did aquire it used. When engine is stone cold, and full hot it runs flawless. However there is a slight bog during acceleration I would say when the engine is in between cold and hot. It happens one time and you just power thru it, and it clears up and never comes back until the next full warmup cycle since stone cold.

I hope I am explaining this right. It's like the autotune is a little off only when engine is at middle temp.

Sounds like the low jet needs to be opened up just a bit...kind of like back in the day we had manual chokes, you needed it partially choked till it warmed up....no chokes now but that's the problem.

 

[The Nor Way]

Coarse I'm old and that might not have jets...since you said "autotune"...so....

 

[Wiscombobulated]

I’ve had to let the AT on my 545m2 readjust to the big temp swings we’ve been getting lately (idle for a couple mins then bury it through a big round).
Is it bogging after you’ve been feathering the throttle on the previous cut? Sometimes mine acts funky when I’m being careful cleaning up limbs on the ground and not running wot through the cuts. Once I get back to running wot the AT figures it back out and runs fine again.

 

[Chevboy0167]

Saw may need a firmware update. Find a dealer that has that ability and get the version confirmed.

 

[Fordiesel69]

I’ve had to let the AT on my 545m2 readjust to the big temp swings we’ve been getting lately (idle for a couple mins then bury it through a big round).
Is it bogging after you’ve been feathering the throttle on the previous cut? Sometimes mine acts funky when I’m being careful cleaning up limbs on the ground and not running wot through the cuts. Once I get back to running wot the AT figures it back out and runs fine again.

Yes this is exactly it. I do baby it limbing and so I don't hit dirt when cutting on the ground. If I idle and just give her wot it does act up.