Honda G 400 Workshop Manual

							Check cleaner  for  dirt 
or  obstruction of ele- ments. 
Fill  fuel  tank * Use any  automotive  gasoline. CAUTION: Gasoline  substitutes  are not recommended, 
they  may  be harmful to the fuel system  components. 
Fuel ffiler cap 
Recoil  starter 
ruction  of 
ele- 
Check  reduction  gear oil level. Fill with SE rated SAElOW-40 engine oil if necessary.  
						

							Turn the  fuel valve ON. 
Turn the fuel valve OFF. 
b 
Set the  throttle by tightening  the  wing nut at  the desired  speed. 
Turn the en-@ne  switch ON. 
c 
Move the  throttle  lever 
down  fully. 
Turn the  engine  switch OFF. 
Loosen  the wing nut  and  raise the 
throttle  lever slightly. 
Close  choke  lever. 
NOTE: Do  not use the  choke if the 
engine is warm or  the air temperature 1s high.  
						

							First 20 Hrs. operating I I CHANGE ENGINE OIL ANLmDUCIION  GEAR  OIL I 
~ with a lever. - .~ 
D 
, 
t Wash D and  E in cleaning 
solvent.  After drying,  refill  with 
mark.  clean 
en-he  oil up  to  oil  level 
Every 50 Hr 
* Wash part A (element) in clean- 
ing  solvent.  After drying,  soak in oil and  squeeze  out  the  excess. 
S. operating CLEAN 
Clean more  frequently  if  operating in 
B 
Every 100 Hrs. operating 
CHANGE  ENGINE  OIL  CLEAN FUEL  STRAINER 
0 *Wash removed  parts in solvent,  dry  them :.  . .-> thoroughly  and  in- 
stall securely.  Turn 
the  fuel  valve ON 
and  check  for  leaks. .. 
I . .- ._. 
Every 300 Hrs. operating 
* Check  fuel line for cracks or leaks.  Replace, 
if  necessary. 
AIRCLEANER  ELEMENT 
a  dusty  area. 
*Remove  dust  from  paper  element  B 
by  applying compressed  air  from  inside 
of the  element  or  tapping  the case 
lightly. If the  element  is  excessively 
dirty  replace  or wash  it in  liquid 
water  is  clear.  Dry  it  thoroughly  by 
detergent 
and  water  and 
flush until 
applying  compressed  air  before  install- 
Ing. *Wash the foam  element in C liquid 
detergent  and water  and  flush  until 
water  is clear.  Dry  it  thoroughly 
by applying  compressed  air.  After  drying, 
soak in oil and  saueeze out the  excess. 
CLEAN SPARK PLUG AND CHECK 
GAP 
(.024 - .028 in) 0.6 - 0.7 mm 
Use  NGK 
B4H, BR4HS or ND W14F-U, W14FR-U 
CDI  type 
0.9 - 1.0 mm (.035 - .039 in) Use NGK BP4HS-IO BPR4HS-10 or, ND W 14FP- 
ULIO, W14FPR-ULIO 
* Do not use  gasoline or low  flash  point  solvents  for cleaning.  They  are flammable and explosive under certain conditions. 
ADJUST IGNITION TIMING f Adjust  contact  breaker  points so that  they 
just  start  to open when  the F mark on the 
flywheel aligns with  the  mark on crankcase. t IGNITION TIMING: 20 BTDC. 
BREAKER CONTACT 
ADJUST VALVE  CLEARANCE 
ADJUST CARBURETOR  SCREWS t Measure at TDC on compression  stroke t Start  the  engine  and  adjust  idle  speed  by CarDuretor with pilot Iew 
STANDARD: 
when 
engine is  cold.  turning  the  throttlestop  Screw. 
1) Tighten the pilot  screw until  it bottoms 
lightly,  then  back it off  the  number  of turns 
shown  below: 
IN 0.08 - 0.16 n LO03 - ,006 in) EX 0.11 - 0.19 mm LO04 - ,007 in) G300 I,% turns 
G400 2 turns t If the  clearance  is less  than  the  standard 
limit,  grind valve stem or replace  valve. 2) Adjust idle speed as  outlined at left. 
THROTTLE  STOP  SCREW 
ASSY 
The 
CDI Type does  not  require  adjustme? MAI~JET  
						

							wire end. -- 
Solid wire  core 
mounting 
A return spring and wire  end may  be used with a flexible core cable. 
Flexible  wire 
core  mounting 
Cycle,  valve arrangement 
Displacement  cc (cu 
in) 1 272 (16.61 I 406 (24.8) 
4 cycle, side valve ~~  ~  ~~ 
Max. output 
hp/rpm I 7/3,600 I 10/3,600 Max. torque  kg-m (ft-lb) 1 1.5 (11) 1 2.3 (16.6’1 
Fuel consumption  gjhp-h(lb/hp-h) I 285 (0.62) 1 270 (17) 
PTO  shaft  rotation 
Counterclockwise 
Dry weight kg Ob) 1 22 (49) I 33 (72.8) 
I ALL INFORMATION,  ILLUSTRATIONS,  DIREC- 
TIONS  AND  SPECIFICATIONS INCLUDED  IN  THIS 
PUBLICATION  ARE  BASED  ON  THE  LATEST 
PRODUCT  INFORMATION  AVAILABLE  AT THE 
TIME  OF APPROVAL  FOR PRINTING.  HONDA 
MOTOR  CO.,  LTD.  RESERVES  THE  RIGHT  TO 
MAKE  CHANGES  AT 
ANY TIME  WITHOUT  NOTICE 
AM) WITHOUT INCURRING ANY OBLIGATION 
WHATEVER. 
NO  PART  OF THIS  PUBLICATION  MAY BE 
RE- 
PRODUCED  WITHOUT  WRITTEN  PERMISSION. 
PROPERTY OF 
SERVICE 
DO NOT REMOVE. 
COMllClUNICATIONS. ’* 
(AH) 31 88900  
						

							Current customer service contact information: 
 
Servicing dealership personnel are trained professionals. They should be able to answer any question you may 
have. If you encounter a problem that your dealer does not solve to your satisfaction, please discuss it with the 
dealerships management. The Service Manager, General Manager, or Owner can help. Almost all problems 
are solved in this way.  
United States, Puerto Rico, and U.S. Virgin Islands: 
If you are dissatisfied with the decision made by the dealerships management, contact the Honda Regional 
Engine Distributor for your area (www.honda-engines.com/dea.htm
). 
If you are still dissatisfied after speaking with the Regional Engine Distributor, you may contact the Honda 
Office as shown. 
American Honda Motor Co., Inc. 
Power Equipment Division 
Customer Relations Office 
4900 Marconi Drive 
Alpharetta, GA 30005-8847 
Or telephone: (770) 497-6400 M-F, 8:30 am - 7:00 pm EST 
When you write or call, please provide the following information: 
•  Equipment manufacturers name and model number that the engine is mounted on 
•  Engine model, serial number, and type 
•  Name of the dealer who sold the engine to you 
•  Name, address, and contact person of the dealer who services your engine 
•  Date of purchase 
•  Your name, address, and telephone number 
•  A detailed description of the problem