2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 255Get this manual
1H-4 Ignition System:
Repair Instructions
Spark Plug Cap and Spark Plug Removal and Installation
Removal!
Spark Plug Inspection and Cleaning
B933H21806001
Refer to "Spark Plug Inspection and Cleaning in Section 0B (Page 0B-9)"
B933H21806002
WARNING
Ignition Coil and Plug Cap Inspection
The hot engine can burn youWait until the engine is cool enough to touch1) Turn the ignition switch OFF2) Remove the front fenderRefer to "Exterior Parts Removal and Installation in Section 9D (Page 9D4)"3) Remove the fuel tank lower coverRefer to "Fuel Tank Removal and Installation in Section 1G (Page 1G-9)"4) Disconnect the spark plug cap (1)5) Remove the spark plug with spark plug wrenchSpecial tool (A): 0993010121 (Spark plug wrench set)