Instructions / Assembly

58
TECHNICAL INFORMATION
WT40X
Dimensions and weight
Engine design and performance
Tu n e u p
Pump
Length 28.9 in (735 mm)
Width 21.1 in (535 mm)
Height 22.2 in (565 mm)
Dry mass [weight] 172 lbs (78 kg)
Model GX390T2
Engine type 4-stroke, overhead valve, single cylinder
Displacement
[bore×stroke]
23.7 cu-in (389 cm
3
)
[3.46×2.52 in (88.0×64.0 mm)]
Fuel tank capacity 1.61 US gal (6.1 L)
Engine oil capacity 37 oz (1.1 L)
Cooling system
Forced air
Ignition system CDI magneto
PTO shaft rotation Counterclockwise
Spark plug gap
0.028 – 0.031 in
(0.7
– 0.8 mm)
See page 36.
Idle speed
1,400 ± 150 rpm See shop manual.
Valve clearance (cold) Intake:
0.15±0.02 mm
Exhaust: 0.20±0.02 mm
Other specifications No other adjustments needed.
Suction port diameter 3.9 in (100 mm)
Discharge port diameter 3.9 in (100 mm)
Maximum total head lift Minimum 82 ft (25 m)
Maximum suction head lift Minimum 26 ft (8 m)
Maximum discharge capacity Minimum 422.7 US gal (1,600 L)/min
Priming time
Maximum 150 seconds/14.8 ft (4.5 m)
Allowable continuous
operating time
Approximately 1.5 hours
(actual time varies with pump load)
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