BX2660 MMM vibration

[linearxs]

I was curious what your thoughts are on this video

YouTube: BX2660 MMM Vibration at 2200-2900 Engine RPM

Am I paranoid or do you think this is a real problem?

 

[bp fick]

Good video, although we cannot "see" the shaking nor "feel" it, so we take your word for it. Curious. At what RPM do you mow anyhow? I know I mow with my RFM at 3000.

 

[OrangeRidge]

I assume you've removed the plastic deck covers and
checked that the pulley bolts are all tight and the spring is taut ?
If the set-up was out of wack , the vibration would show up
well before the 2200rpm.

 

[davatk]

Well, I'm no BX expert, but compared to my B series MMM that deck sounds rather strange - especially at the lower speeds. Like something may be loose or out of balance. Just my 2 cents.

 

[leonz]

1. I would be willing to say that the drive line u joint(s) are out of time.

2. Buy a front grill guard and the full compliment of suitcase wieghts to cancel out the motor shake.

3. The three cylinder mule is bolted directly to the frame and it has no isolation with motor mounts(none there period), and the tires simply add to the resonance, plus the mower adds even more.


leonz

 

[rdsaustintx]

Geezuz. Sack up, put away that stupid video camera and go mow. :laughing:

 

[dodge man]

Crank up the RPM's when you mow. A BX is suppose to mow at or near full throttle. I've noticed I will get a little bit of vibration in my BX2350 mower deck belt at about those same RPM's that your are talking about. I just rev it up past that point. I wouldn't worry about it.

 

[OrangeRidge]

2. Buy a front grill guard and the full compliment of suitcase wieghts to cancel out the motor shake.

3. The three cylinder mule is bolted directly to the frame and it has no isolation with motor mounts(none there period), and the tires simply add to the resonance, plus the mower adds even more.

The engine mounts have rubber spacers . Linearx's engine
doesn't appear to shake when revving at 1800 rpm before deck engagement ..........

 

[funwithahoe]

Here's an idea - Warm up the tractor BEFORE you turn the video camera on - That way the people you arre asking for help don't have to sit there for 3 minutes.

Yeah - Somethin' sounds wrong. Sounds out of balance to me.

 

[linearxs]

If the MMM isn't engaged the tractor does NOT shake at all at any rpm.

The dealer said it isn't anything to worry about just mow at 3000rpm. I'm fine doing that. However, because the tractor is brand new and in the break-in period I was just conflicted about the manual stating that I shouldn't run it full throttle until after the first 50 hours. My plan is to run for about an hour at 3000 then throttle down for awhile, disengage MMM, then repeat.

My other issue was low transaxle fluid (not on dipstick) which I'll post at some point.

Edit: I'll try to make a better video of it.