Spark Plug Check/Adjustment; Spark Plug Replacement - Honda HRG416C1 Manual

MAINTENANCE

SPARK PLUG CHECK/ADJUSTMENT

Remove the spark plug (page 3-4).
Clean the spark plug [1] electrodes with a wire brush [2]
or special plug cleaner.
Check the following and replace if necessary.
– Insulator [3] and sealing washer [4] for damage
– Center electrode [5] and side electrode [6] for wear
– Burning condition, coloration
RECOMMENDED SPARK PLUG: BPR5ES (NGK)
Measure the plug gap [7] with a wire-type feeler gauge.
PLUG GAP: 0.70 – 0.80 mm (0.028 – 0.031 in)
If the measurement is out of the specification, adjust by
bending the side electrode.
Install the spark plug (page 3-4).

SPARK PLUG REPLACEMENT

REMOVAL
The engine and the muffler become very hot during
operation and remains hot for a while after stopping
the engine. Be careful not to touch the muffler while
it is hot. Allow it to cool before proceeding.
Disconnect the spark plug cap [1] and remove the spark
plug [2].
• Clean around the spark plug base with compressed
air before removing the spark plug and be sure that
no debris is allowed to enter into the combustion
chamber.
INSTALLATION
Install and hand tighten the spark plug to the cylinder
head.
RECOMMENDED SPARK PLUG: BPR5ES (NGK)
Tighten the spark plug to the specified torque.
TORQUE: 20 N·m (2.0 kgf·m, 15 lbf·ft)
Connect the spark plug cap.
3-4
[1]
[4]
[5]
[6]
[3]
[1]
[2]
[2]
[7]