Product Manual

ENGLISH 19
Tuneup Specifications GX120/160/200
Quick Reference Information
ITEM SPECIFICATION MAINTENANCE
Spark plug gap 0.7–0.8 mm
(0.028–0.031 in)
Refer to page: 12
Idle speed
1,400 rpm
Refer to page: 13
Valve
clearance
(cold)
GX120
GX200
IN: 0.15±0.02 mm
EX: 0.20±0.02 mm
See your
authorized
Honda dealer
GX160
IN: 0.08±0.02 mm
EX: 0.10±0.02 mm
Other
specifications
No other adjustments needed.
Fuel Unleaded gasoline (Refer to page 8)
U.S. Pump octane rating 86 or higher
Except
U.S.
Research octane rating 91 or higher
Pump octane rating 86 or higher
Engine oil SAE 10W-30, API SJ or later, for general use.
Refer to page 8.
Reduction
case oil
Same oil as engine oil, see above (applicable
types).
Spark plug BPR6ES (NGK)
W20EPR-U (DENSO)
Maintenance Before each use:
• Check engine oil level. Refer to page 9.
• Check reduction case oil (applicable types).
Refer to page 9–10.
• Check air filter. Refer to page 10.
First 20 hours:
• Change engine oil. Refer to page 9.
• Change reduction case oil (applicable types).
Refer to page 10.
Subsequent:
Refer to the maintenance schedule on page 7.
+200
-150
Wiring Diagrams
With Oil Alert and Electric Starter
(1) CONTROL BOX (8) OIL LEVEL SWITCH
(2) RECTIFIER (9) CHARGING COIL
(3) FUSE (10) IGNITION COIL
(4) CIRCUIT BREAKER (11) SPARK PLUG
(5) ENGINE SWITCH (12) STARTER MOTOR
(6) OIL ALERT UNIT (13) STARTER SOLENOID
(7) Type with Oil Alert unit (14) BATTERY (12 V)
Bl Black Br Brown
Y Yellow O Orange
Bu Blue Lb Light blue
G Green Lg Light green
RRed PPink
W White Gr Gray
With Oil Alert and Without Electric Starter
(14)
(13)
(11)
(12)
(10)
(9)
(8)
(7)
(6)
(5)
(4)
(3)
(2)
(1)
OFF
ON
START
IG E BAT ST
oo
oo
(11)
(10)
(5)
(6)
(8)
IG E
OFF
ON
oo
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