2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 43Get this manual
MAINTENANCE
AIR CLEANER HOUSING DRAIN PLUG
Remove the drain tube from bonom of the air cleaner
housing to empty any depositsInstall the drain tube securelyNOTEIf the vehicle is used in very wet or muddy cond tions, more frequent inspections are required
SPARK PLUG
Disconnect the spark plug cap and clean around the
spark plug baseNOTE: Clean around the spark plug base with compressed air before removing the plug, and make sure no debris is allowed to enter the combustion chamber
Remove the spark plug
Check the insulator for cracks or damage, and the electrodes for wear, fo ul ing or discolo rationReplace the plug if necessary (recommended spark plug: page 3-1)