This demonstration guide answers one field question about spindle timing and blade length after sharpening. Measurements come before parts, and the notes are not a generic equipment FAQ.
Diagnose before replacing parts
Start with overlap measured at the deck centerline. That reading separates spindle timing and blade length after sharpening from adjacent faults that share the same complaint.
If the measurement is out of spec, treat the blade set as the primary path. If it is in spec, do not replace the blade set just to complete a parts list.
Repair the failed system
The usual correction is the blade set, installed to the documented spec for this complaint.
A demonstration shop records the finding so the next technician is not repeating a guess about spindle timing and blade length after sharpening.
Stop before you make it worse
Do not installing mismatched length blades on adjacent spindles. That shortcut hides the original measurement and creates a second failure.
If the machine still fails after the blade set is corrected, convert the visit to a broader diagnosis rather than stacking parts.
Written and published by Ridgeline Small Engine.