2015 Kawasaki KX250F Owners Manual - Page 48

2015 Kawasaki KX250F Manual

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MAINTENANCE AND ADJUSTMENT 47 Spark Plug The spark plug should be taken out periodically for inspection and regapping. Measure the gap with a wire-type thickness gauge. If incorrect, adjust the gap to the specified value by bending the outer electrode. Spark Plug Gap CPR8EB-9 CPR9EB-9 If the plug is oily or has carbon built up on it, clean it. The plug may also be cleaned using a high flash -point solvent and a nonmetal brush (nylon etc.). If the spark plug electrodes are corroded, or damaged, or if the insulator is cracked, replace the plug. The standard spark plug is shown in the table below. Standard Spark Plug NGK CPR8EB-9 To find out whether the plug's heat range is correct, remove the plug and examine the ceramic insulator around the center electrode. If the ceramic is light brown, the spark plug correctly matches the engine temperature. If the ceramic is burned white, the plug should be replaced with a colder plug. Optional Spark Plug Colder NGK CPR9EB-9 j 0.8 ∼ 0.9 mm (0.031 ∼ 0.035 in.) ○If the engine performance drops, try replacing the spark plug to regain performance. NOTE Spark Plug Removal and Installation A. Gap B. Outer Electrode the seat (see Air Cleaner section). • Remove Remove the bolts and take off the radiator shroud • on both sides.

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MAINTENANCE AND ADJUSTMENT
47
j
Spark Plug
The spark plug should be taken out periodically for
inspection and regapping. Measure the gap with a
wire-type thickness gauge.
If incorrect, adjust the
gap to the specified value by bending the outer elec-
trode.
Spark Plug Gap
CPR8EB-9
CPR9EB-9
0.8
∼
0.9 mm (0.031
∼
0.035 in.)
A. Gap
B. Outer Electrode
If the plug is oily or has carbon built up on it, clean
it. The plug may also be cleaned using a high flash
-point solvent and a nonmetal brush (nylon etc.). If
the spark plug electrodes are corroded, or damaged,
or if the insulator is cracked, replace the plug. The
standard spark plug is shown in the table below.
Standard Spark Plug
NGK CPR8EB-9
To find out whether the plug’s heat range is correct,
remove the plug and examine the ceramic insulator
around the center electrode. If the ceramic is light
brown, the spark plug correctly matches the engine
temperature.
If the ceramic is burned white, the plug should be
replaced with a colder plug.
Optional Spark Plug
Colder
NGK CPR9EB-9
NOTE
○
If the engine performance drops, try replacing the
spark plug to regain performance.
Spark Plug Removal and Installation
•
Remove the seat (see Air Cleaner section).
•
Remove the bolts and take off the radiator shroud
on both sides.