2005 Ski-Doo Racing Handbook, Page 317Get this manual
SECTION 06DRIVE SYSTEM
DRIVE BELT
APPLICATION CHART
MODEL 2005 440 REV 2004 440 REV All 593 HO engine equipped models All 793 HO engine equipped models Drag Race Belt PART NUMBER 417 300 288 417 300 253 417 300 197 417 300 166 417 300 230 MINIMUM WIDTH (wear limit) mm (in) 34.70 (1.366) 34.70 (1.366) 33.35 (1.313) 34.70 (1.366) 34.70 (1.366)
INSPECTION
Inspect belt for cracks, fraying or abnormal wear (uneven wear, wear on one side, missing cogs, cracked fabric)If abnormal wear is noted, probable cause could be pulley misalignment, excessive RPM with frozen track, fast starts without warmup period, burred or rusty sheave, oil on belt or distorted spare beltCheck drive belt widthReplace the drive belt if width is under minimum recommended width (see table above)