−
−
−
−
0.039
0.043 in
(1.00
1.10 mm)
0.039
0.043 in (1.00
1.10 mm)
(3)
LEFT SIDE
(3) spark plug cap
(4) center electrode
(5) side electrode
(6) spark plug gap
(6)
(5)
(4)
127
Spark Plug
Servicing Your Honda
(cont’d)
Using a wire-type feeler gauge, check the spark plug gap ( ). If
adjustment is necessary, bend the side electrode carefully.
The gap should be:
Discard the spark plug if there is apparent wear or if the insulator is
cracked or chipped.
Inspect the electrodes and center porcelain for deposits, corrosion, or
carbon fouling. If the corrosion or deposits are heavy, replace the
plug. Clean a carbon or wet-fouled plug with a plug cleaner, if
available, or a wire brush. Inspect the spark plug electrodes for wear.
The center electrode ( ) should have a flat tip and sharp edges, and
the side electrode ( ) should not be eroded. If the electrodes and
insulator tip appear unusually fouled or burned, we suggest that you
contact your Honda dealer.
Clean any dirt from around the spark plug base.
Disconnect the spark plug cap ( ). Take care to avoid damaging the
spark plug wire when disconnecting the cap.
Using a spark plug wrench provided in the tool kit, remove the spark
plug.
5.
4.
6.
3.
7.
8.
3
4
5
6
06/09/27 11:07:55 31HP4600 0136
Summary of Contents for 2007 FourTrax Rancher 420
Page 8: ......
Page 14: ...6 Safety Labels ATV Safety USA only...
Page 15: ...7 Safety Labels ATV Safety...
Page 16: ...8 Safety Labels ATV Safety TRX420FM only...
Page 36: ...28 Instruments Controls...
Page 52: ...44 Before Riding...
Page 84: ...76 Basic Operation Riding...
Page 198: ...190 Taking Care of the Unexpected...
Page 240: ...232 Memo...