Honda G 100 Manual

							HELPFUL TIPS & SUGGESTIONS 
STORING  YOUR  ENGINE 
Storage Preparation 
Proper  storage  preparation  is essential  for  keeping  your  engine 
troublefree  and  looking  good.  The  following  steps  will help to keep  rust 
and  corrosion  from  impairing  your  engine’s  function  and  appea\
rance, 
and  will make  the  engine  easier 
to start  when  you  use  it again. 
Cleaning 
If  the  engine  has  been  running,  allow  it to cool  for  at  least  half  an  hour 
before  cleaning.  Clean  all exterior  surfaces,  touch  up  any  damaged 
paint,  and  coat  other  areas  that  may  rust  with  a light  film  of  oil. 
Using  a  garden  hose  or  pressure washing  equipment  can  force  water  into 
the  air cleaner  or  muffler  opening.  Water 
in the air cleaner  will soak  the  air 
filter,  and water  that  passes through  the  air filter  or muffler,  can  enter the 
cylinder  causing  damage. 
Fuel 
Gasoline  will  oxidize  and  deteriorate  in storage.  Deteriorated  gasoline  will 
cause  hard  starting,  and  it leaves  gum  deposits  that  clog  the  fuel  system.  If 
the  gasoline  in  your  engine  deteriorates  during  storage,  you  ma\
y  need 
to have  the  carburetor,  and  other  fuel  system  components,  serviced \
 or 
replaced. 
The  length  of  time  that  gasoline  can  be  left  in your  fuel  tank  and  carburetor 
without  causing  functional  problems  will  vary  with  such  factors \
 as  gasoline 
blend,  your  storage  temperatures,  and  whether  the  fuel  tank  is partially  or 
completely  filled.  The  air  in a  partially  filled  fuel  tank  promotes  fuel  deterio- 
ration.  Very  warm  storage  temperatures  accelerate  fuel  deteriorat\
ion.  Fuel 
problems  may  occur  within  a  few  months,  or  even  less  if  the  \
gasoline  was 
not  fresh  when  you  filled  the  fuel  tank. 
21  
						

							Fuel  system  damage  or  engine  performance  problems  resulting  from\
 
neglected  storage  preparation  are  not  covered  under the Distributor’s 
Limited Warranty. 
You can  extend  fuel  storage  life  by  adding  a  gasoline  stabilizer  t\
hat  is 
formulated  for  that  purpose,  or  you  can  avoid fuel deterioration 
problems  by draining  the  fuel tank  and  carburetor. 
ADDING  A  GASOLINE  STABILIZER  TO  EXTEND  FUEL 
STORAGE  LIFE 
When  adding  a  gasoline  stabilizer,  fill the  fuel  tank  with  fresh  gasoline.  If 
only  partially  filled,  air  in  the  tank  will  promote  fuel  deter\
ioration  during 
storage.  If  you  keep  a  container  of gasoline  for  refueling,  be  sure  that  it 
contains  only  fresh  gasoline. 
1. Add  gasoline  stabilizer  following  the  manufacturer’s  instructio\
ns. 
2. After  adding  a gasoline  stabilizer,  run  the  engine  outdoors  for 10 
minutes to be  sure  that  treated  gasoline  has  replaced  the  untreated 
gasoline  in the  carburetor. 
3. Stop  the  engine,  and  turn  the  fuel  valve to the OFF position  (see 
Page 
9). 
DRAINING  THE  FUEL  TANK  AND  CARBURETOR 
Gasoline  is highly  flammable  and  explosive,  and  you  can 
be  burned  or  seriously  injured  when  handling  fuel. 
Stop  engine  and  keep  heat,  sparks,  and  flame  away. 
Handle  fuel  only  outdoors. 
Wipe  up  spills  immediately. 
22  
						

							1. 
2. 
3. 
4. 
With  the  fuel  valve OFF, remove  and  empty the sediment  cup. 
Turn  the fuel  valve 
ON and  drain  the gasoline  in  the fuel  tank 
into  a  suitable  container. 
Replace  the sediment  cup  and  tighten  securely. 
Drain  the  carburetor  by loosening  the drain  screw. 
Drain  the  gasoline  into  a  suitable  container. 
FUEL  VALVE 
SEDIMENT CUP 
DRAIN SCREW 
Engine oil 
1. Change  the  engine  oil  (see 
page 
15). 
2. Remove  the spark  plug  (see 
page 17). 
3. Pour  a  tablespoon (5 - 10 cc)  of 
clean  engine  oil  into  the  cylinder. 
4. Pull the recoil  starter  several 
times to distribute  the oil. 
5. Reinstall  the  spark  plug. f 
OIL 
SPARK  PLUG  HOLE 
23  
						

							Storage Precautions 
If  your  engine  will  be  stored  with  gasoline in the  fuel  tank  and  carburetor,  it 
is  important  to reduce  the  hazard  of  gasoline  vapor  ignition.  Select  a 
well-ventilated  storage  area  away  from  any  appliance  that  operat\
es  with  a 
flame,  such  as a  furnace,  water  heater,  or clothes  dryer. 
Also avoid  any 
area  with  a  spark-producing  electric  motor,  or where  power  tools  are 
operated. 
If  possible,  avoid  storage  areas  with  high  humidity,  because  th\
at  promotes 
rust  and  corrosion. 
If  there 
is gasoline  in the  fuel  tank,  leave  the  fuel  valve  in the OFF position 
(see  page 
9). 
Keep  the  engine  level  in storage.  Tilting  can  cause  fuel  or oil  leakage. 
With  the  engine  and  exhaust  system  cool,  cover  the  engine  to  \
keep  out 
dust. 
A hot  engine  and  exhaust  system  can ignite or melt  some  materials. Do not  use  sheet  plastic  as  a  dust  cover. A nonporous  cover  will  trap 
moisture  around  the  engine,  promoting  rust  and corrosion. 
Removal  From Storage 
Check  your  engine  as  described  in the BEFORE  OPERATION CHECKS section  of  this  manual  (see  page 5). 
If  the  fuel  was  drained  during  storage  preparation, fill the  tank  with  fresh 
gasoline.  If you  keep  a  container  of  gasoline  for  refueling,  be sure  it 
contains  only  fresh  gasoline.  Gasoline  oxidizes  and deteriorates  over  time, 
causing  hard  starting. 
If  the  cylinder  was  coated  with  oil during  storage  preparation,  the  engine 
will  smoke  briefly  at startup.  This  is normal. 
TMNSPORTING 
Keep  the  engine  level  when  transporting  to  reduce  the  possibili\
ty  of  fuel 
leakage.  Turn  the  fuel  valve  to  the OFF position  (see  page 9). 
24  
						

							TAKING CARE OF UNEXPECTED  PROBLEMS 
ENGINE  WILL NOT START I POSSIBLE  CAUSE 1 CORRECTION 
1. Check  choke  lever  Move  choke  lever  to  the 
Choke  lever  in wrong 
position  CLOSE 
position  unless  engine 
position. 
is warm  (p.7) 
2.  Check  fuel. 
Refuel (p.13) 
Out 
of fuel. 
Fuel  valve  OFF.  Turn  fuel valve 
ON. 
Bad  fuel;  engine  stored 
gasoline.  fresh  gasoline  (p.13). 
gasoline,  or  refueled  with 
bad (p.22 
and  23)  Refuel  with  without  treating  or 
draining  Drain  fuel  tank  and  carburetor 
3.  Remove  and  inspect  spark 
Try to  start  the  engine.  (p.6, 7 (flooded  engine).  Dry  and  reinstall  spark  plug. 
Spark  plug wet  with  fuel  Clean,  gap,  or  replace  spark 
Spark  plug faulty,  fouled, or 
Plug.  plug  (p.17  and  18).  improperly  gapped. 
and 8) 
4. Take  the  Honda  engine  to  Replace  or  repair  faulty 
Fuel filter  clogged,  carburetor 
a  Honda  engine  dealer,  or  malfunction,  compression  refer 
to  shop  manual.  components  as  necessary.  malfunction, 
ignition 
problem. 
LOSS OF POWER  CORRECTION 
POSSIBLE  CAUSE 
1.  Check  air  filter?..  Clean 
or replace  air filters 
Air  filters  clogged. 
(P. 16) 
2.  Check  fuel.  Drain  fuel  tank  and  carburetor 
Bad  fuel;  engine  stored 
without  treating  or draining 
fresh gasoline  (p.13). 
gasoline, 
or refueled  with bad  (p.22  and  23)  Refuel  with 
gasoline. 
3.  Check  throttle  lever 
Replace  or  repair  faulty 
Fuel  filter  clogged,  carburetor 
4. Take  the  engine  to  your  Position 
the  throttle  lever  in 
Throttle  lever  in wrong 
position.  fast  position. 
position. 
setvicing  Honda  engine  malfunction,  ignition 
problem. 
manual.  malfunction,  compression 
dealer  or refer  to  the  shop  components  as 
necessaiy. 
25  
						

							TECHNICAL & CONSUMER INFORMATION 
TECHNICAL INFORMATION 
Serial  Number  Location 
Record  the  engine  serial number  in the  space  below.  You  will need  this 
information  when  ordering  parts and  when  making  technical  or  warranty 
inquiries. 
Engine  serial number: 
GJAE - 
26  
						

							Carburetor Modification For High Altitude Operation 
At  high  altitude,  the standard  carburetor  air-fuel  mixture  will  be too rich. 
Performance  will  decrease,  and  fuel  consumption  will  increase.  A\
  very  rich 
mixture  will  also  foul  the  spark  plug  and  cause  hard  starting.\
 
High  altitude  performance  can  be  improved  by  specific  modificati\
ons 
to the 
carburetor.  If  you  always  operate  your  engine  at  altitudes  abov\
e 1,500 
meters (5,000 feet)  have  an  authorized  Honda  servicing  dealer  perform 
this  carburetor  modification. 
Even  with  carburetor  modification,  engine  horsepower  will  decreas\
e  about 
3.5% for  each  300  meter (1,000 foot)  increase  in altitude.  The  effect  of 
altitude  on horsepower  will  be greater  than  this  if  no carburetor 
modification  is  made. 
I NOTICE I 
When the carburetor has been modified for high altitude operation, the 
air-fuel mixture will be 
too lean for low altitude use. Operation at altitudes 
below 1,500 meters (5,000 feet} with  a modified carburetor may cause  the 
engine to overheat and result in serious engine damage. For use at low 
altitudes, have an authorized Honda servicing dealer return  the carburetor 
to original factory specifications. 
27  
						

							Oxygenated Fuels 
Some  conventional  gasolines are being  blended  with  alcohol  or an ether 
compound.  These  gasolines  are  collectively  referred 
to as  oxygenated 
fuels.  To  meet  clean  air  standards,  some  areas  of  the  United  \
States  and 
Canada  use  oxygenated  fuels 
to help  reduce  emissions. 
If  you  use oxygenated  fuel,  be sure  it  is unleaded  and  meets  the  minimum 
octane  rating  requirements. 
Before  using  an  oxygenated  fuel,  try 
to confirm  the  fuel’s  contents. 
Some  stateslprovinces  require  this  information to be  posted  on the pump. 
The  following  are  the  EPA  approved  percentages  of  oxygenates: 
ETHANOL 
MTBE 
METHANOL - (ethyl  or grain  alcohol) 10% by  volume 
You  may  use gasoline  containing  up to 10% ethanol 
by  volume.  Gasoline  containing  ethanol  may  be 
marketed  under  the  name Gasohol. 
- (methyl  tertiary  butyl  ether) 15% by volume 
You  may  use  gasoline  containing  up to 15% MTBE  by 
volume. 
- (methyl  or  wood  alcohol) 5% by  volume 
You  may  use  gasoline  containing  up 
to 5% methanol  by  volume  as  long as it also  contains 
cosolvents  and  corrosion  inhibitors to protect  the 
fuel  system.  Gasoline  containing  more  than 5% methanol  by volume  may cause  starting  andlor 
performance  problems. 
It may  also  damage  metal, 
rubber,  and plastic  parts  of  your  fuel  system. 
If  you  notice  any  undesirable  operating  symptoms,  try  another  servi\
ce 
station 
or switch to another  brand  of  gasoline. 
Fuel  system  damage  or performance  problems  resulting  from  the  use 
of  an  oxygenated  fuel  containing  more  than  the  percentages  of 
oxygenates  mentioned  above  are  not  covered  under  the 
Distributor’s 
Limited  Warranty. 
28  
						

							Emission  Control  System  Information 
Source of Emissions 
The  combustion  process  produces  carbon  monoxide,  oxides  of  nitro\
gen, 
and  hydrocarbons.  Control of hydrocarbons and oxides of nitrogen is very 
important  because,  under  certain  conditions,  they  react 
to form 
photochemical  smog  when  subjected 
to sunlight.  Carbon  monoxide  does 
not  react in the  same  way,  but  it  is toxic. 
Honda  utilizes  lean  carburetor  settings  and  other  systems  to  re\
duce  the 
emissions  of  carbon  monoxide,  oxides  of  nitrogen,  and  hydrocarbo\
ns. 
The U.S. and  California  Clean Air Acts 
EPA  and California  regulations  require  all manufacturers to furnish  written 
instructions  describing  the  operation  and  maintenance  of  emission\
  control 
systems. 
The  following  instructions  and  procedures  must  be followed  in order 
to keep  the  emissions  from  your  Honda  engine  within  the  emission 
standards. 
Tampering  and Altering 
Tampering  with or altering  the  emission  control  system  may  increase 
emissions  beyond  the  legal  limit.  Among  those  acts  that  constit\
ute 
tampering  are: 
0 Removal  or  alteration  of  any  part  of  the  intake,  fuel,  or  exh\
aust 
systems. 
Altering  or  defeating  the  governor  linkage  or  speed-adjusting  mechanism 
to cause  the  engine  to  operate  outside  its design 
parameters. 
29  
						

							Probiems  That May Affect Emissions 
If  you  are  aware  of  any of the  following  symptoms,  have  your  engine 
inspected  and  repaired  by  your  servicing  dealer. 
Hard  starting  or  stalling  after  starting. Rough  idle. 
Misfiring  or  backfiring  under  load. Afterburning  (backfiring). Black  exhaust  smoke  or high  fuel  consumption. 
Replacement Parts 
The  emission  control  systems  on  your  Honda  engine  were  designed\
,  built, 
and  certified  to  conform  with  EPA  and  California  emission  regul\
ations.  We 
recommend  the  use  of  genuine  Honda  parts  whenever  you  have  mai\
nte- 
nance  done.  These  original-design  replacement  parts  are  manufactu\
red  to 
the  same  standards  as  the  original  parts, 
so you  can  be confident  of  their 
performance.  The  use of  replacement  parts  that  are  not  of  the  original 
design  and  quality  may  impair  the  effectiveness  of  your  emissio\
n  control 
system. 
A  manufacturer  of  an  aftermarket  part  assumes  the  responsibility\
  that  the  part  will  not  adversely  affect  emission  performance.  The  manufac\
turer  or 
rebuilder  of  the  part  must  certify  that  use of the  part  will  not  result  in  a 
failure  of  the  engine  to comply  with  emission  regulations. 
Maintenance 
Follow the  maintenance  schedule  on page 12. Remember  that  this 
schedule  is based  on the  assumption  that  your  machine  will  be used  for  its 
designed  purpose.  Sustained  high-load  or  high-temperature  operatio\
n,  or 
use  in unusually  wet  or dusty  conditions,  will  require  more frequent 
service. 
30