This demonstration guide answers one field question about a sulfated battery or a high-resistance ground. Measurements come before parts, and the notes are not a generic equipment FAQ.
Diagnose before replacing parts
Start with cranking voltage at the starter stud. That reading separates a sulfated battery or a high-resistance ground from adjacent faults that share the same complaint.
If the measurement is out of spec, treat the battery and ground strap as the primary path. If it is in spec, do not replace the battery and ground strap just to complete a parts list.
Repair the failed system
The usual correction is the battery and ground strap, installed to the documented spec for this complaint.
A demonstration shop records the finding so the next technician is not repeating a guess about a sulfated battery or a high-resistance ground.
Stop before you make it worse
Do not jumping from a car while the generator is in a wet driveway. That shortcut hides the original measurement and creates a second failure.
If the machine still fails after the battery and ground strap is corrected, convert the visit to a broader diagnosis rather than stacking parts.
Written and published by Ridgeline Small Engine.