Spark Plug; Recommended Spark Plug - Honda MBX50 Workshop Manual

INSPECTION AND ADJUSTMENT
Wash the element in non-flammable or high flash
point solvent and allow to dry.
NOTE
D o not wash the element in gasoline or vege­
table oil.
Soak the element in clean engine oil or gear oil
(SAE 80-90) and squeeze out any excess.
Install the element air cleaner cover.
Install the left side cover.

SPARK PLUG

RECOMMENDED SPARK PLUG

MBX50
ND W24 ESR-U
Standard
NGK BAB ES
ND
W22 ESR-U
Optional NGK BR7 ES
ND
W27 ESR-U
NGK BR9 ES
Disconnect the spark plug cap.
Clean any dirt from around the spark plug base.
Remove and discard the spark plug.
Measure the new spark plug gap using a wire-type
feeler gauge.
SPARK PLUG GAP: 0.7-0.8 mm
(0.028-0.031 in)
Adjust by bending the side electrode carefully.
With the plug washer attached, thread the spark
plug in by hand to prevent crossthreading.
Tighten the spark plug another 1 /2 turn with a
spark plug wrench to compress the plug washer.
Connect the spark plug cap.
3 .. 4
(1) WASH IN (2) SQUEEZE OUT (3) GEAR (4) SOEEZE OUT
MBX80
G
E,F
+-
W27 ESR-U
+-
BR9 ES
+- W22 ESR-U
+-
BR7 ES
+- W24 ESR-U
+- BAB ES
SOLVENT SOLVENT
THOROUGHLY
HONDA
MBX50,MBX80
EXCESS OI L
OIL
(1) SIDE ELECTRODE
(2) CENTER
ELECTROD E