Generac 91401256S / Bsc 556 — Cleaning the Generator
Maintenance · generator windings
For the Generac 91401256S / Bsc 556, from the Generac service manual.
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Before you start
- Use only solvents that do not attack epoxy or polyester winding varnishes.
Procedure
- Disassemble generator before cleaning.
- Use only petroleum distillate solvents with flash point greater than 100°F (38°C) for oil or grease.
- Apply solvent with soft brush or cloth, avoiding damage to magnet wire or insulation.
- Dry all components thoroughly with moisture-free, low pressure compressed air.
- For dry dirt, use dry cloth or low pressure air at 30 psi (206 kPa).
- Brushing with bristle brush followed by vacuum cleaning may be used for dry dust.
- Do not use wire brushes.
- Steam cleaning may be used if generator is completely disassembled and windings thoroughly dried in oven.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- flash point greater than 100°F (38°C)
- 30 psi (206 kPa)
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.