deck vibration

[Old Man 73]

I replaced both spindles, belt and blades still have vibration, rechecked install, put another set of blades on same results. belt guide seems to be too close to pully; the vibration starts to get bad at mid throttle. is there anything else to check? old part were shot!

 

[slomo]

wrong belt pitch
engine mounting bolts loose
blades out of balance
pulley bearings going bad
grass and dog poo buildup under the deck
belt routed wrong
other drive parts worn out
bent blades

Post pictures or a video of your suspect parts. Link the video up on here so we can see what you are dealing with.

 

[Forest#2]

Might remove the blades and test.

Sometimes a star or H type blade mount will not get aligned properly and cause vib's.

What is the model of the unit?