If the spark plug center electrode [A] and/or side electrode [B] are corroded or damaged, or if the insulator [C] is cracked, replace the plug.
If the spark plug is dirtied or the carbon is accumulated, replace the spark plug.
If the gap is incorrect, replace the spark plug.
Spark Plug Gap: 0.8
0.9 mm (0.031
0.035 in.)

Standard Spark Plug Type: NGK CR9EIA-9
Stick Coil Primary Peak Voltage Inspection
Interlock Operation InspectionTransmission Assy Assembly
Install the ball bearing [A] until it is bottomed.
Turn the oil seal side to the bottom.
Special Tool - Bearing Driver Set: 57001-1129
Install the bearing holder [B].
Turn the flat side to the bottom.
Apply a non-permanent locking agent to the bearing
holder bolts [C].
Tighten: ...
Moving Off
Check that the side stand is up.
Pull in the clutch lever.
Shift into 1st gear.
Open the throttle a little, and start to
let out the clutch lever very slowly.
As the clutch starts to engage, open
the throttle a littlemore, giving the engine
just enough fuel to keep it from
stallin ...
Throttle Body Assy Holder Installation
Be sure to install the new O-rings [A].
Using a high flash-point solvent, clean off any oil or dirt
that may be on the silicone sealant coating area. Dry
them with a clean cloth.
Apply silicone sealant to any two positions of the new O
-ring.
Sealant - Liquid Gasket, TB1211F: 92104-0 ...