Honda GX670 User Manual

TAKING CARE OF UNEXPECTED PROBLEMS
ENGINE WILL NOT
Recharge battery.
Battery discharged.
1. Check battery and
START
Correction
Possible Cause
2. Check control
Fuel valve OFF.
Move lever to
ON.
fuse.
(if equipped)
positions.
Replace fuse (p. 46).
Fuse burnt out.
Choke
OPEN.
Move lever to CLOSED
I unless engine is warm.
Engine switch OFF.
I Turn engine switch
to
ON.
3. Check fuel.
Refuel.
Out of fuel.
Bad fuel; engine
carburetor
(p. 41 1.
stored without treating
Drain fuel tank and
gasoline.
gasoline.
or refueled with bad
Refuel with fresh
or draining gasoline,
4. Check engine oil
Clean, gap, or replace
Spark plugs faulty, fouled,
5. Remove and inspect
Alee to stop engine.
level.
Add oil
(p. 26).
Low oil level caused Oil
spark plugs.
or improperly gapped.
spark plugs (p.
35).
Spark plugs wet with
Dry and reinstall spark
fuel (flooded engine).
plugs. Start engine
with throttle lever in
FAST position.
6. Take engine to an
valves stuck, etc.
refer to shop manual.
as necessary.
ignition malfunction,
servicing dealer, or
faulty components
carburetor malfunction,
authorized Honda
Replace or repair
Fuel filter clogged,
ENGINE LACKS
Clean or replace filter
Filter element(s)
1. Check air filter.
POWER
Correction
Possible Cause
2. Check fuel.
Bad fuel; engine stored
Drain fuel tank and
clogged.
element(s) (p.
31).
without treating
carburetor
(p. 41).
or draining gasoline,
gasoline.
gasoline.
or refueled with bad
Refuel with fresh
3. Take engine to an
Replace or repair
Fuel filter clogged,
authorized Honda
valves stuck, etc.
refer to shop manual.
necessary.
ignition malfunction,
servicing dealer, or
faulty components as
carburetor malfunction,

Honda GX670 Specifications

General

Compression Ratio	8.3:1
PTO Shaft Rotation	Counterclockwise (from PTO shaft side)
Cooling System	Forced air
Ignition System	Digital CDI with variable timing
Lubrication System	Forced lubrication with trochoid pump
Engine Type	4-stroke, OHV
Displacement	670 cm³
Bore x Stroke	77 x 72 mm
Oil Capacity	1.9 L
Starting System	Electric starter
Net Power Output	22.1 HP at 3600 RPM