If it's minimal maintenance you're after, these quality PVC belts with impregnated lubrication require less attention to make things run smoothly.

• This Sportsmith treadmill walking belt fits LifeFitness 9000* treadmills Serial#s 344637-344672, Serial#s 341200-344636, Serial#s 339500-341199, and Model# GK45-00007-0100
• User facing material: PVC
• User facing surface: Black Diamond
• Impregnated Lubrication
• Finger-spliced seam
• 2 ply
  

Where used:

• Parts by Brand LifeFitness Treadmills Treadmill 9000 341200-344636
• Parts by Brand LifeFitness Treadmills Treadmill 9000 344637-344672
• Parts by Brand LifeFitness Treadmills Treadmill 9000 339500-341199
• Parts by Type Treadmill Belts
• Parts by Brand LifeFitness Treadmills Treadmill 9000 GK45-00007-0100