Generac — Check Spark
Testing & diagnosis · Ignition system
From a Generac service manual covering: Craftsman 2200i C0010020, Craftsman 3000i C0010030, GP2200, GP3000i, GP3500iO, IQ3500, PRO-3000i INV3000DMN, Premier 2200i INV2200DMN, iQ2000, iQ3500, iX 1600, iX 2000…. Check it applies to your exact model before use.
Applies to: Generac GP3000i, Generac GP3500iO, Generac IQ3500, Generac iX 1600, Generac iX 2000
Procedure
- Disconnect spark plug lead from spark plug.
- Attach high tension lead to spark tester terminal.
- Ground spark tester clamp by attaching to cylinder head.
- Attempt to pull start engine; if spark jumps tester gap, ignition system is working properly.
Tools required
- spark tester Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Generac GP3000i →, Generac GP3500iO →, Generac IQ3500 →, Generac iX 1600 →, Generac iX 2000 →
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.