Table of Contents GP 2500Awc_bo0160531en_002TOC.fm 26. Maintenance 266.1 Engine Maintenance ............................................................................266.2 Periodic Maintenance Schedule ..........................................................266.3 Engine Oil ............................................................................................276.4 Servicing Air Cleaner ...........................................................................286.5 Spark Plug ...........................................................................................296.6 Cleaning the Sediment Cup ................................................................306.7 Carburetor Adjustment ........................................................................316.8 Adjusting Engine Speed ......................................................................326.9 Storage ................................................................................................326.10 Transport .............................................................................................336.11 Troubleshooting ...................................................................................336.12 Wire Colors ..........................................................................................346.13 Wiring Schematic ................................................................................34