Suzuki RM-Z250 Owner's Service Manual page 25

2-8 PERIODIC MAINTENANCE
• Check the spark plug gap A with a thickness gauge.
" 09900-20803: Thickness gauge
# Spark plug gap: 0.9 – 1.0 mm (0.035 – 0.039 in)
# Standard Spark plug
NGK
Changing the spark plug heat range improperly can
damage the engine.
Select the spark plug heat range only after adjusting
the carburetor setting.
• Tighten the spark plug with specified tightening torque after
tightening the spark plug temporarily with fingers.
" 09930-10121: Spark plug wrench set
$ Spark plug: 11 N·m (1.1 kgf-m, 8.0 lb-ft)
• Install the ignition coil/spark plug cap securely.
Do not hit the ignition coil/plug cap with a plastic ham-
mer when installing it.
• Connect the lead wire coupler.
CR8EIA-10
CAUTION
CAUTION
INCORRECT
45 ± 10˚