Filter
Top Products
20
Tractors,
Lawn
and
Garden
-
110
andl12
Engine
SM-
2059-
(Apr-
67)
Gen
er a l
Information
-
Tecumseh
25-7
High
speed
and
idle
mixture
needles
not
prop-
erly
adjusted.
Adjust
needles.
Spark
plug
fouled
or
pitted,
incorrect
gap.
Check
spark
plug
condition.
Clean
and
regap.
Heplace
spark
plug
if
necessary.
Linkage
misaligned
(throttle
arm
to
gover-
nor).
Straighten
linkage
to
prevent
binding.
!~Il!-,rine
Looses
POI-ocr
Crankcase
low
on
oil.
Fill
crankcase
to
proper
level.
Cbange
oil
if
tractor
has
been
operated
8
hours
since
last
oil
change.
Engine
shrouding
plugged.
Remove
shrouding
and
clean
engine
fins
and
inside
of
shrouding.
Excessive
engine
load.
Heduce
engine
load
by
shifting
transmis-
sion
in
lower
gear
aneVor
by
moving
vari-
able
speed
control
lever
back
.
Restricted
air
filter.
Clean
ancl
check
air
filter
element
condi-
tion.
Replace
filter
if
necessary.
Dirt
or
water
in
fuel
system.
Remove
fuel
system
and
clean
dirt
and
water
from
system.
Install
new
gaskets.
Install
carburetor
kit
if
necessary.
High
speed
and
idle
mixture
needles
not
prop-
erly
adjusted
.
Adjust
needles
properly.
Spark
plug
fouled
or
pitted,
incorrect
gap.
Check
spark
plug
condition.
Clean
:-Ind
regap.
Replace
spark
plug
if
necessary.
Too
much
oil
in
crankcase.
Drain
oil
and
refill
crankcase
with
proper
amount
of
crankcase
lubricant.
Low
engine
compression.
Check
<.;ompression.
Repair
and
replace
parts
as
necessary.
Torque
head
bolts.
Worn
cy
linder
bore.
Check
cylind
e r
condition.
Repair
as
necessary.
Engine
Ol'evfients
Dirty
or
plugged
shrouding
and
engine
fins.
Remove
shrouding
and
c
lean
engine
fins
and
shrouding.
High
speed
and
idle
mixture
needles
not
prop-
erly
adjusted.
Adjust
needles
properly.
Too
much
oil
in
crankcase.
Drain
oil
and
fill
crankcase
with
proper
amount
of
crankcase
lubricant.
Worn
valve
stem
and/
or
guides.
Check
condition
of
valve
stems
and
guides.
Heplace
valves
and
guides
if
necessary.
Crankcase
low
on
oil.
Fill
crankcase
to
proper
level.
Change
011
if
tractor
has
been
operated
8
hours
since
last
oil
change.
Excessive
engine
loael.
Heduce
work
load
by
shifting
transmission
In
lower
gear
and/
or
by
moving
variable-
speed
control
lever
back.
Faulty
breather
causing
low
crankcase
vac-
uum.
Clec1n
breather
assembly.
Heplace
parts
as
necessary.
Enf[inc
Knocks
Engine
out
of
time.
Time
ignition.
Old
fuel.
Drain
fuel
tank
and
refill
with
good
grade
of
regular
gasoline.
Excessive
engine
load.
[{educe
engine
load
by
shifting
transmis-
sion
in
lower
gear
and/
or
by
moving
vari-
able-speed
control
lever
back.
Litho
in
U.S
.
A.