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Snapper 1650 Series User Manual

Snapper 1650 Series
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SECTION
6
-
ENGINE
SERVICE
&
REMOVAL
Since
extensive
repairs
and
overhaul
of
the
engine
are
to
be
handled
by
dealers
authorized
to
do
so
by
the
engine
manufacturer,
only
certain
routine
service
adjustments
plus
the
procedures
for
removing
and
reinstalling
the
engines
are
covered
in
this
section.
The
procedures
differ
in
cer¬
tain
areas
for
the
single
and
twin
cylinder
engines
and
are
covered
separately
in
this
section.
ENGINE
TROUBLE
SHOOTING
GUIDE
HARD
STARTING
OR
LOSS
OF
POWER
1.
Faulty
ignition.
(See
Section
7).
a.
Leads
grounded
or
loose.
b.
Breaker
points
faulty
or
improperly
gapped.
c.
Spark
plug
faulty
or
improperly
gap¬
ped.
d.
Coil
or
condenser
defective.
2.
Faulty
Carburetion.
a.
Fuel
line
or
filter
clogged
(dirt,
gum,
etc.).
b.
Fuel
pump
faulty.
c.
Carburetor
dirty
or
improperly
ad¬
justed.
3.
Poor
compression.
a.
Head
loose
or
gasket
leaking.
b.
Valves
sticking
or
leaking.
c.
Piston
rings
worn.
WON'T
START
Check
interlocks
switches.
(See
Section
7).
1.
If
engine
won't
crank
check
neutral
return
brake
pedal,
rear
PTO
switch
and
cir¬
cuit
breaker.
2.
If
engine
cranks
but
does
not
start
check
seat
switch.
OPERATING
ERRATICALLY
1.
Clogged
fuel
line.
2.
Water
in
fuel.
3.
Vent
in
gas
cap
plugged.
4.
Faulty
fuel
pump.
5.
Gasket
leaking
(carburetor-manifold).
6.
Governor
improperly
set.
7.
Carburetor
improperly
adjusted.
KNOCKING
1.
Fuel
octane
too
low.
2.
Ignition
timing
wrong.
3.
Carbon
build-up
in
combustion
chamber.
4.
Engine
overheated.
OCCASIONAL
SKIP
AT
HIGH
SPEED
1.
Spark
plug
fouled,
faulty
or
gap
too
wide.
2.
Ignition
timing
wrong.
3.
Carburetor
improperly
adjusted.
4.
Breaker
points
faulty
or
improperly
ad¬
justed.
OVERHEATING
1.
Air
intake
screen
or
fins
clogged.
2.
Oil
level
too
high
(or
low).
3.
Fuel
mixture
too
lean.
4.
Ignition
timing
wrong.
Spark
too
far
ad¬
vanced.
5.
Engine
overloaded.
6.
Tappet
clearance
too
close.
IDLES
POORLY
1.
Idle
speed
too
low.
2.
Idle
fuel
improperly
adjusted.
3.
Gasket
leaking
(carburetor-manifold).
4.
Spark
plug
gap
too
close.
BACKFIRING
1.
Carburetor
set
too
lean
(main
fuel).
2.
Breaker
points
improperly
gapped
(timing).
3.
Valve
sticking.
V-T
6.1

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Snapper 1650 Series Specifications

General IconGeneral
BrandSnapper
Model1650 Series
CategoryLawn Mower
LanguageEnglish

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