Bosch UniversalChain 35 — Error codes & fixes

Troubleshooting guide for the Bosch UniversalChain 35. Diagnose an error code and find the fix.

Chain jam / won't cut

chain-jam

The chain is not cutting or jams, often from a dull chain, wrong tension or a blocked bar groove.

Source: ProductDB new-categories research catalog Confidence: 90% Verified Aug 8, 2026

2 fixes available

Won't start

no-start

The saw will not start, often from a flooded carburetor, a fouled spark plug or a blocked air filter.

Source: ProductDB new-categories research catalog Confidence: 90% Verified Aug 8, 2026

2 fixes available

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