Mowing Funny vibration while mowing

[dodge man]

What engine RPM are you mowing at. I know my deck will also vibrate if I don't mow at or near full throttle.

 

[Kub39]

My new BX2670 did the same thing I thought it was something wrong in the front axle. The dealer found out the motor mount was rubbing on frame.

Sounds more like it. It's definitely not the mower deck hitting tires although to me that is exactly what it feels like. I now wonder how the motor mount is "hitting" hitting the frame because the mount is attached to the frame I would think. Does the tilt of the engine affect it some way because it only happens when tilted to the side. I guess I need to look at mine to see if this is the problem. Did the dealer say how to fix it?

 

[willi67]

Bx2670,

So when tilted, it felt like the MMM was hitting the tires? And then once leveled off, it stopped? That's what happened to me. I stopped the mower and got off and popped the hood and saw the engine vibrating a little...but nothing serious I didn't think. I couldn't imagine what made it vibrate so oddly. Again, glad to hear any suggestions and opinions. Thanks.

Hi Kub
I have heard the same vibration when mowing sideways across a hill with the right hand side higher, when you mow the other direction (discharge chute low) its fine, I'm thinking that the mower deck has trouble discharging grass clippings up-hill and causes bit of blockage at the blades.

 

[firemailwv]

so... today was the first time mowing with my new BX25D and I have this same vibration on side slopes. Do any of you have an update to what was the culprit? To me it feels like the motor mounts could the problem. I actually thought that before I read these posts.

 

[Kub39]

I tightened the motor mounts a little bit which seemed to help the same amount...A little bit. But I never got it to stop completely. It never seemed to affect the performance of the tractor...just a small annoyance to me.

 

[Gary Fowler]

Have you checked the lug nuts on the wheels? These seem to loosen up on all tractors. The rims moving on the lug bolts will seem like a vibration especially on hills.
Even if that isn't the problem, they need to be checked and tightened. This is usually recommended at 50 hours so check them now, check again at 50 hours to see it they stay tight.

 

[bellweather]

Have you used it without the mower deck mounted? And if so, was it vibrating?
Probably not your issue, but I was getting a vibration in my BX22 and discovered that it was the air-filter due to a broken bracket-strap.