Honda GX610 User Manual

SERVICING YOUR HONDA ENGINE
SPARK PLUG SERVICE
Recommended spark plugs: ZGR5A (NGK)
J16CR-U (DENSO)
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Incorrect spark plugs can cause engine damage.
1. Disconnect the spark plug caps, and remove any dirt from around
2. Remove the spark plugs with a 13/16-inch spark plug wrench.
the spark plug area.
SPARK PLUG
3. Inspect the spark plugs. Replace
them if the electrodes are worn, or
if the insulator is cracked or
chipped. Clean the spark plugs with
a wire brush if you are going to
0.028-0.031in
reuse them.
(0.70-0.80 rnrn)
4. Measure the spark plug electrode
gap with
a suitable gauge. The gap
should be 0.028-0.031 in
(0.70-
0.80 mm). Correct the gap, if neces
sary, by carefully bending the side
electrode.
SPARK PLUG
WRENCH
A
5. Install the spark plug carefully, by
hand, to avoid cross-threading.
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Honda GX610 Specifications

General

PTO Shaft Rotation	Counterclockwise (from PTO shaft side)
Ignition System	Transistorized magneto
Engine Type	Air-cooled 4-stroke OHV
Displacement	614 cm³
Starting System	Electric / Recoil
Fuel Tank Capacity	6.5 L (1.7 US gal)