2008 Suzuki LT-A400/F, LT-F400/F ATV Service Manual, Page 193Get this manual
Ignition System:
Repair Instructions
Spark Plug Removal and Installation
Removal!
B827H21806001
WARNING
The hot engine can burn youWait until the engine is cool enough to touch1) Turn the ignition switch OFF2) Remove the left side coverRefer to "Exterior Parts Removal and Installation in Section 9D (Page 9D3)"3) Disconnect the spark plug cap (1)4) Remove the spark plug with the spark plug wrenchSpecial tool (A): 0993010121 (Spark plug wrench set)
I827H1180013-01
Spark Plug Inspection and Cleaning