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First 20
Hrs.
operating
Every
50 Hrs. operating
CHANGE
ENGINE
OIL
AND
REDUCTION
GEAR
OIL
CLEAN
AIR
CLEANER
ELEMENT
ing
in
a
dusty
area.
Clean more frequently
if operat-
ing solvent. After drying, soak in
oil and squeeze out the excess.
After hand tightening oil filler cap, tighten
with
a lever
*
Wash
"B"
and
"C"
in cleaning
solvent. After drying, refill with
clean engine
oil up
to oil level
mark.
*
Tap
"D"
and "E" lightly or blow
clean by applying compressed air
from the inside of the elements.
~-
,
Every 100
Hrs.
operating
I WARNING
CHANGE
ENGINE
OIL
CLEAN
FUEL
STRAINER
CLEAN
SPARKPLUG
ANDCHECK
GAP
,
Do
not
use gasoline or
low flash
,
point solvents for cleaning. They are
ilammable and explosive under
cer-
0.6
-
0.7 mrn
(.024
-
,027 in)
tain
conditions.
Use NGK B 4 H or BR4HS
wash removed parts
m solvent, dry them
thoroughly and
in-
stall securely.
Turn
the fuel valve "ON"
and check for leaks.
CDI rype
'
'
Every
300 Hrs.
operating
0.9
-
1.0 mm
LO35
-
,039 in)
Use NGK BPJHS-IO or
BPR-4HS-iO
,
*
Check fuel tube for cracks or
'
leaks. Replace, if necessary.
1
encine
dealer.
The following adjustments should be performed by your Honda general purpose
ADJUST IGNITION TIMING
ADJUST VALVE CLEARANCE
ADJUST CARBURETOR SCREWS
*
Carburetor with pilot screw
Adjust contact breaker points
so
that they
*
Measure at TDC on comprcsslon stroke
*
Start the englne and adjust
idle speed by
')
Tighten the
"IeW
it
just
start
to open,
when
"F"
mark
on
whenengine
is cold.
turning
the
throttle
stop screw.
flywheel aligns with the mark on crankcase.
*
STANDARD:
tightly, then back it off the number of turns
shown below:
*
IGNITION TIMING: 2O"BTDC.
IN
0.05
-
0.1
1 mrn (.0020
-
,0043
in)
EX 0.09
-
0.15 mm
(.0035
-
.0059 in)
G300 l/E turns
G400 2
turns
*
If the clearance is less than the standard
2) Adjust idle speed as outlined left.
~
limit, grind valve stem or replace valve.
-
.
CYLINDER
HEAD
GASKET
PILOT
SCREW
N VALVE
i
!,
CONTACT
BREAKER ASSY
The CDI type does not require adjustment.
I
i
'
A throttle control cable (optional) may be used in
any one of the four pull directions shown. Use
: I
either a solid core wire, or a flexible core wire with
4
a return spring and wire end.
j
THROTTLE
CONTROL
Wire end
e
Flexible wire
core, mounting
BATTERY
t
Recommended battery is
*Use
only
automobile
12V-32AH.
type vinyl covered wire
,fL,,/
effective
diameter
is
(for low voltagej whose
&
(0.172 in)
and
which
utilizes press fit terminals
between the battery and
the engine. Length must
, /
7
+Protect
the
terminals
be within l m
(3
Ft).
with grease and com-
pletely cover the positive
cap.
When
connecting
terminal with
a rubber
and negative leads are
terminals, ensure posltive
correctly connected.
a
j -
more
than
4.4
mrn
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