Swisher E4-HT3000 Owner's/operator's Manual
SWISHER OWNER'S/OPERATOR'S MANUAL
WARN|N6!
Minimize the risk of injury to yourself and others! Read this manual
and familiarize yourself with the contents, Always wear eye and hear-
ing protection when operating this unit,
l : :: f"
Part Number 81955 Rev, 10/07
Introduction
The Swisher E4-HT3000 Hedge Trimmer
has been designed and built to deliver
superior performance and reliability with-
out compromise to quality, comfort, or
durability.
Swisher high performance engines repre-
sent the leading edge of air-cooled engine
technology, delivering exceptionally high
power at remarkable low displacement and
weight. As an owner/operator, you'll soon
discover for yourself why Swisher is simply
in a class by itself!
The information contained in this manual
describes units available at the time of
publication. While every attempt has been
made to give you the very latest informa-
tion about your Swisher product, there
may be some differences between your
E4-HT3000 hedge trimmer and what is
described here.
Swisher Inc. reserves the fight to make
changes to products without prior notifica-
tion, and without obligation to make akera-
tions to units previously manufactured.
WARN|NG!
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth de-
fects or other reproductive harm.
Attention Statements
_ WARN|NG!
A statement preceded by the trian-
gular Attention Symbol and the word
"WARNING" contains information that
should be acted upon to prevent seri-
ous bodily injury.
CAUT|ON!
A statement preceded by the word
"CAUTION" contains information that
should be acted upon to avoid damag-
ing your unit.
A statement preceded by the word IM-
PORTANT is one that possesses special
significance.
A statement preceded by tile word "NOTE"
contains information that is handy to know
and may make your job easier.
Read and follow this
operators manual.
Failure to do so could
result in serious injury.
Wear eye and hearing
protection at all times
during the operation of
this unit.
The blades are SHARP!
Handle with care.
Keep hands clear of the
cutter blades when
starting the engine.
The operational procedures described in
this manual are intended to help you get
the most from your unit, and to protect you
and others from harm. These procedures
are guidelines for safe operation under
most conditions, and are not intended to
replace any safety rules and/or laws that
may be in force in your area. If you have
questions regarding your E4-HT3000
hedge trimmer, or if you do not understand
something in this manual, contact Swisher
Inc. at (800) 222-8183, or go to www.
swisherinc.com for assistance.
Contents _A_;I;
Introduction ................................................... 2
Attention Statements ..................................... 2
General Safety Instructions .......................... 3
Safety and Equipment Labels ....................... 4
Specifications ................................................. 4
Unit Descfiption ............................................ 5
Mixing Fuel .................................................... 5
Filling the Fuel Tank ..................................... 5
Starting the Engine ....................................... 6
Adjusting Engine Idle .................................... 7
Stopping the Engine ...................................... 7
Maintenance and Adjustments ..................... 8
Spark Arrester Screen Maintenance .......... 11
Long Term Storage ...................................... 11
Troubleshooting Guide ............................... 12
Emission System Warranty Statement ......... 15
Genera| Safety instructions
Work Safely
Swisher hedge trimmers operate at very
high speeds and can do serious damage or
injury if they are misused or abused. Never
allow a peJ_on without training or instruction
to operate your unit!
_ WARNING!
Never make unauthorized attachment
installations.
Stay Alert
You must be physically and mentally fit to
operate this unit safely.
equipment of any kind if you are tired
or if you are under the influence of al-
cohol, drugs, medication or any other
substance that could affect your ability
or judgement.
_ WARNING!
Minimize the Risk of Fire!
NEVER smoke or light fires near the
engine.
ALWAYS stop the engine and allow it
to cool before refueling. Avoid overfill-
ing and wipe off any fuel that may have
spilled.
ALWAYS move the unit to a place well
away from a fuel storage area or other
readily flammable materials before
starting the engine.
NEVER place flammable material close
to the engine muffler.
NEVER run the engine without the spark
arrester screen in place.
WORK SAFEL
ALWAYS wear close-fitting clothing. Gloves offer
added protection and am strongly recommended. Do
not wear clothing or jewehy that eould get caught in
machinery.
NEVER allow children to use the
unit. Avoid operating near bystand-
ers.
ALWAYS wear eye, eaJ, and
hand protection while operat-
ing this unit!
ALWAYS operate
with both hands firmly
gripping the uniL
ALWAYS stop the
engine b@re removing
branches or debris from
the cutters! Never allow
the cutters to contact
buildings or other hard
objects!
NEVER operate this unit
if the salty guard has been
removed or damaged!
ALWAYS stop the engine and
install the blade cover before
moving to another work site,
and maintain a firm footing
while operating or earJying
the trimmer.
NEVER cut metal objects or
wire with the blade.
USE EXTREME CA UTION
when operating near,rices or
electric wiring.
Figure I
AVOID using or storing this
unit in a wet environment.
Water on the cutters may enter
the gearcase and damage your
unit.
AVOID cutting large or extremely
"woody" branches. Doing so can
shorten cutter life, and may also
damage the gearcase.
ALWAYS ke@ p_vper footing and do not ove_
reach. Maintain your balance at all times
during operation.
ALWAYS wear eye protection to shield
against thrown objects.
ALWAYS protect yourself from haz-
ards such as thorny brush and flying
debris by wearing gloves and close
fitting clothing that covers arms and
legs. Never wear shorts. Don't wear
loose clothing or items such as jewelry
that could get caught in machinery or
underbrush. Secure long hair so it is
above shoulder level.
NEVER run the engine when transport-
ing the unit,
_ WARN|NG[
Use Good Judgment
NEVER run the engine indoors! Make
sure there is always good ventilation.
Fumes from engine exhaust can cause
serious injury or death.
ALWAYS clear your work area of trash
or hidden debris that could be thrown
back at you or toward a bystander.
ALWAYS use the proper cutting tool for
the job.
ALWAYS stop the unit immediately if
it suddenly begins to vibrate or shake.
Inspect for broken, missing or improp-
erly installed parts or attachments.
ALWAYS hold the unit firmly with both
hands when cutting or trimming, and
maintain control at all times.
ALWAYS keep the handles clean.
ALWAYS disconnect the spark plug
wire before performing any mainte-
nance work.
Inspect front and rear handles for dam-
aged or loose attachments before use.
NEVER operate a hedge trimmer with
damaged or loose handles
Safety Equipment and Labels
ON-OFF Switch
Throttle Interlock
Protector
Figure 2
Caution Label
• Q . ,
Caution,Danger,Warning,andOperationInformation
Labels:Makesureall informationlabelsare undam-
aged andreadable. Immediatelyreplacedamagedor
missinginformationlabels.Newlabelsareavailable,
contactSwisherInc. at (800)222-8183,or go to www.
swisherinc.com.
Specifications
Engine Model .............................................................................................................................................................................................. SDH2510
Engine Type ............................................................................................................................................... 4-cycle, horizontal cylinder, air cooled
Engine Bore x Stroke ........................................................................................................................................................................ 34mm x 27mm
Engine Displacement ....................................................................................................................................................................................... 24.5cc
Unit Weight, Less Fuel .............................................................................................................................................................. 24": 5.8 kg (12.8 lb)
Unit Dimensions (LxWxH) .............................................................................................................................................. 24": 1100 x 245 x 230mm
Max. Power ........................................................................................................................................................ 1.1 hp (.83kw)@ 7,500 rpm (min-1)
Fuel/oil ratio ........................................................................................................... 50:1with *ISO-L-EGD or JASO FC class 2-cycle Mixing Oil
Fuel Tank Capacity ....................................................................................................................................................................... 0.55 liter/18.6 oz.
Carburetor ................................................................................................................................................................ Walbro WYJ, Diaphragm type
Ignition ........................................................................................................................................................... Fully electronic, program controlled
Span Plug ............................................................................................................................................................................................ NGK CMR5H
Air Cleaner .............................................................................................................................................. Non-reversible heavy-duty filter element
Starting Method ....................................................................................................................................................................................... Recoil type
Stopping Method ........................................................................................................................................................ Slide switch, grounding type
Blade Length ........................................................................................................................................................................................ 610 mm (24")
Blade Type ............................................................................................................................... Double-blade cutting action: Double-edged blade
Clutch Type .................................................................................................................................................................. Centrifugal clutch, dry-type
Gear Type .................................................................................................................................................................................................. Spur gears
Gear Lubrication .................................................................................................................................................................... Lithium-based grease
Standard Equipment ................................................................................................... Rear handle with integral controls, anti-vibe mountings,
front handle with guard, spark plug wrench and blade scabbard (cover)
**EPA Emission Compliance Period .................................................................................................................................................... Category A
Specifications are subject to change without notice.
** The EPA emission compliance referred to on the emission compliance label located on tile engine, indicates tile number of operating hours for which the
engine has been shown to meet Federal emission requirements. Category C = 50 hours (Moderate), B = 125 hours (Intermediate) and A = 300 hours (Extended).
*Swisher E4 Engine Oillneets or exceeds these specifications and is recomrnended for all Swisher products.
Unit Description
Familiarize yourself with your machine and
its various components. Understanding your
machine helps ensure top performance,
long service life, and safer operation.
Prior to use
Before using this product, please make
sure you have all the components required
Mr a complete unit:
[[ Engine assembly and gearcase/cutter
assembly
1[ Combination spark plug/13mm wrench
Carefully inspect all components for damage.
The terms "left," "left-hand," and "LH"; "right,"
"right-hand," and "RH" ; "front" and "rear"
refer to directions as viewed by the operator
during normal operation of this product.
_ WARNING!
Do not make unauthorized modifica-
tions or alterations to this machine or
any of its components or accessories,
Figure 3
Cutter
ON-OFF
Switch
\
Front Handle
/
Guide Bar
Protector
Cover
Choke
Cleaner
Cover
Throttle
Trigger
Fuel Tank
Gearease
Recoil
Starter
Rear Handle
Mixing Fuel
CAUTION!
m Never use any type of gasoline
containing more than 10% alcohol
by volume! Some types of gasoline
contain alcohol as an oxygenate.
Oxygenated gasoline may cause
increased operating temperatures.
Under certain conditions, alcohol-
based gasoline may also reduce the
lubricating qualities of some 2-cycle
mixing oils.
II Generic oils and some outboard oils
may not be intended for use in high-
performance 2-cycle type engines,
and should never be used in your
Swisher engine,
CAUTION[
This engine is designed to operate on
a 50:1 mixture consisting of unleaded
gasoline and ISO-L-EGD or JASO FC
class 2-cycle mixing oil only. Use of
non-approved mixing oils can lead to
excessive carbon deposits.
1[ Use only fresh, clean unleaded gasoline
with a pump octane of 87 or higher.
m Mixed with 50:1 Swisher ISO-L-EGD
or JASO FC class 2-cycle mixing oil at
a gasoline/ratio of 50:1. E4 Engine Oil
meets or exceeds these requirements.
Examples of 50:1 mixing quantities
II 1 gallon of gasoline to 2.6oz. mixing oil
!! 5 liters of gasoline to 100 mL mixing oil
Mix only enough fuel for your immediate
needsg If fuel must be stored longer than
30 days and Swisher E4 Engine Oil with
fuel stabilizer is not used, it should first
be treated with a fuel stabilizer such as
STA-BIL TM.
E4 Engine Oil is a registered JASO FC
classi- fled oil and also meets or exceeds
ISO-L-EGD performance requirements.
Swisher E4 engine oil is recommended for
use in all Swisher low emissions engines.
E4 Engine Oil also includes a fuel stabilizer.
Filling the Fuel Tank
i_k WARNING!Minimize the Risk of Fire!
m ALWAYS stop the engine and allow
it to cool before refueling. Avoid
overfilling and wipe off any fuel
that may have spilled.
m Wipe all spilled fuel and move the en-
gine at least 3 meters from the fueling
point and source before restarting!
m NEVER start or operate this unit if
there is a fuel leak.
II NEVER start or operate this unit if
the carburetor, fuel lines, fuel tank
and/or fuel tank cap are damaged,
II Never smoke or light any fires near
the engine or fuel sourceg
II Never place any flammable mate-
rial near the engine muffle!!
II Never operate the engine without
the muffler and spark arrester in
good working condition,
1. Place the unit on a fiat, level surface.
2. Clear any dirt or other debris from
around the fuel filler cap.
3. Remove the fuel cap, and fill the tank
with clean, fresh fuel.
4. Reinstall the fuel filler cap and tighten
firmly.
Starting Procedure
Engine ignition is controlled by a two-position on-off switch mounted on the throttle
body. This switch is typically labeled "F' for ON and "0" for OFF.
_ Iguitiou ON
Switch
Figure 4
1. Move the ignition stop switch to the rear
(towards the grip) to the 'T' or ON posi-
tion. See Figure 4.
Throttle
Lock
Throttle
Trigger
Fast Idle
Button
Figure 5
Primer Bulb
Figure 6
3. Prime the carburetor by repeatedly
depressing the carburetor primer bulb
until clear fuel can he seen flowing
through the transparent primer bulb.
The primersystem only pushes fuel through
the carburetor.Repeatedly pressing the
primer bulb will notflood the engine with fuel.
2. Set the throttle trigger to the "fast idle"
position by performing the following:
a. Depress and hold the throttle lock,
and then squeeze the throttle trigger.
b. Depress and hold the "fast idle" but-
ton.
4. (Cold engine only) Choke the engine
by moving the choke lever forward to
the "closed" position. See Figure 7.
Cranking the Engine
c. While depressing the fast idle button ...............
release the throttle lock and throttle
trigger.
KEEP CLEAR OF THE CUTTING
ATTACHMENT DURING START=
ING OPERATIONS! THE CUTTERS
MAY MOVE WHEN THE ENGINE iS
STARTED)
m Place the trimmer on the ground
during all starting operations.
m Make sure you have a secure foot-
ing, and keep a firm grip on the unit
as well.
m Keep all bystanders and pets well
clear of the trimmer during starting
operations.
1. Place the unit on the ground. Grip the
engine cover with your left hand and
the starter handle with your right hand
(shown).
2. Pull the starter handle slowly toward
you until you feel the starter mechanism
engage.
3. Start the trimmer by pulling the starting
handle rapidly outward.
CAUTION!
The recoil starter can be easily dam-
aged by abuse[
m Always engage the starter before
attempting to crank the engine.
m Never pull the starter cord to its full
length.
m Always rewind the starter cord
slowly.
When the Engine Starts or Fires
1. Open the choke by moving the choke
lever backward (toward the fuel tank).
2. If the engine does not continue to run,
repeat the appropriate cranking proce-
dures for a cold or warm engine.
3. When the engine starts, clear excess
fuel from the combustion chamber by
accelerating the engine several times
with the throttle lever.
4. Operating the throttle will automatically
disengage the fast idle setting.
WARN|NG[
Operation
m Squeezing the throttle increases engine
speed, causing the clutch to engage and
operate the cutters.
m Releasing the throttle decreases engine
speed, causing the cutters to slow, and
then stop altogether as the clutch disen-
gages.
m Use a sweeping motion when cutting,
and vary throttle settings often.
m Avoid cutting material larger than 1.27
cm in diameter.
if the Engine Does Not Start
m Repeat the appropriate starting proce-
dure for a cold or warm engine.
m If the engine still fails to start, use the
procedures for "Starting a flooded en-
gine," on the next page.
Starting a Flooded Engine
WARN|NG!
Burn danger from hot engine! Allow en-
gine to cool before removing cylinder
cover.
1. Disconnect the spark plug lead, and
then use the spark plug wrench to
loosen and remove the spark plug.
2. If the spark plug is fouled or is soaked
with fuel, clean or replace the plug as
necessary. For spark plug specifcations
and gapping procedure, see page 9.
3. With the spark plug removed, crank the
engine several times to clear excess fuel
from the combustion chamber.
4. Replace the spark plug and tighten it
firmly with the spark plug wrench. If a
torque wrench is available, torque the
spark plug to 170-190 kg cm.
5. Repeat the starting procedures for a
warm engine.
CAUTION
Incorrect spark plug installation can
damage the engine!
6. If the engine still fails to start or fire,
refer to the Foubleshooting chart at the
end of this manual.
Adjusting Engine idle
The engine must return to idle speed
whenever the throttle lever is released.
Idle speed is adjustable, and must be set
low enough to permit the engine clutch to
disengage the cutters.
|d|e Speed Adjustment
1. Start the engine, and then allow it to idle
2-3 minutes until warm.
2. If the cutters move when the engine is
at idle, reduce idle speed by turning the
idle adjustment screw counterclockwise.
3. If a tachometer is available, the engine
idle speed should be final-adjusted to
3,000 _+250rpm (rain-l).
4. Carburetor fuel mixture adjustments
are preset at the factory and cannot be
adjusted or serviced in the field.
_ WARN|N6!
The cutters must NEVER engage at
engine idle speeds! Ifthe idle speed
cannot be adjusted by the procedure,
described here, contact Swisher Inc.
at (800) 222-8183, or go to www.
swisherinc.com for assistance.
Figure 11
1.
2.
Cool the engine by allowing it to idle for
2-3 minutes.
Move the ignition switch to the "O" or
STOP position. See Figure 11.
Maintenance and Adjustments
General Maintenance
MAINTENANCE, REPLACEMENT OR
RE-PAIR OF EMISSION CONTROL
DEVICES AND SYSTEMS MAY BE PER-
FORMED BY ANY REPAIR ESTABLISH-
MENT OR INDIVIDUAL; HOWEVER,
WARRANTY REPAIRS MUST BE PER-
FORMED BYA DEALER OR SERVICE
CENTER AUTHORIZED BY SWISHER.
THE USE OF PARTS THATARE NOT
EQUIVALENT IN PERFORMANCE AND
DURABILITY TO AUTHORIZED PARTS
MAY IMPAIR THE EFFECTIVENESS OF
THE EMISSION CONTROL SYSTEM
AND MAY HAVE A BEARING ON THE
OUTCOME OFA WARRANTY CLAIM.
WARNING[
Beforeperformingany maintenance,
repairor cleaningwork on the unit,
make surethe engineandcuttingat-
tachmentare completelystopped. Dis-
connectthespark plug wire beforeper-
formingserviceor maintenancework.
_likWARi\l i i\lG!
Non-standard parts may not operate
properly with your unit and may cause
damage and lead to personal injury.
Using non-standard replacement parts could
invalidate your Swisher warranty.
Muffler
This unit must never be operated with a faulty
or missing spark arrester or muffler. Make
sure the muffler is well secured and in good
condition. Aworn or damaged muffler is a
fire hazard and may also cause hearing loss.
Spark Plug
Keep the spark plug and wire connections
tight and clean.
Fasteners
Make sure nuts, bolts, and screws (except
carburetor adjusting screws) are tight.
Air Filter
The E4 engine that powers your Swisher mod-
el is a hybrid 4-stroke engine. As a hybrid,
the engine is lubricated by oil mixed with
the gasoline and air from the carburetor that
moves through and around the internal parts
of the engine in a similar way that a 2-stroke
engine is lubricated. Without the heavy duty
2-stage air filter equipped on all E4 engines,
dust and dirt could also move through the en-
gine, decreasing engine life, increasing valve
wear and the need for more frequent valve ad-
justments. To keep your E4 engine strong and
reliable, Swisher recommends that you check
and service the air flter as instructed in the
10-HourMaintenance section that follows.
Daily Inspection and Maintenance
_WARN|NG!
Accidental start-ups can cause severe
injury! Before performing any main-
tenance on this equipment, stop the
engine and disconnect the spark plug!
1. Remove all grass clippings and dirt from
the hedge trimmer.
m Remove any compacted debris from
around the fuel tank and/or muffler.
m Inspect the engine cooling fins for
clogging, and clean as necessary.
m Clean under the cylinder cover and
around the spark plug.
m Inspect the air filter element for clog-
ging, clean as necessary.
2. Check for loose, damaged, or missing
components, and repair as necessary.
3. Lubricate the cutters with oil before use,
and after refueling.
4. Check the cutters for damage and make
sure all bolts are tight.
WARNING!
Iuspect cooling
fins, and clean as
required
Cleau aYouud
spark plug
Clean debrisfrom
tank and mu
Figure 12
bolts are tight
Iuspect fivut and rear handles for
damaged or loose attaehments
Ke@ cooling air
intake passages
_Fuel tank removed
fi) r elarity)
Figure 13
Throttle Cab|e Free P|ay
If the unit does not return to idle speed or
doesen_t reach full rpm, the throttle lever
free play may need to be adjusted as follows:
1. Measure free play at the end of the
throttle lever. Throttle lever free play
should be approximately 0.2-0.275"
(5-7 mm). See Figure 14.
2. If adjustment is necessary, remove the
air cleaner cover by loosening the two
thumbscrews. Loosen the cable adjuster
lock nut and turn the cable adjustment fit-
ting in or out until throttle lever free play
is approximately 0.2-0.275" (5-7 mm).
3. Replace the air cleaner cover, and tight-
en the cover retaining screws securely.
Throttle
Free Play
Figure 14
Throttle
Cable
I O-Hour Maintenance
(more frequently in dusty conditions)
1. Remove the air cleaner cover by loosening
the two thumbscrews. See Figure 16A.
2. Remove and inspect the pre-filter. If the
pre-filter is torn or otherwise damaged,
replace it with a new one. See Figure 16B.
3. Clean the pre-filter with soap and water.
Let dry before reinstalling.
4. Inspect the air cleaner element. If the el-
ement is damaged or distorted, replace
it with a new one.
5. Tap filter gently on a hard surface to
dislodge debris from element or use
compressed air from the inside to blow
debris out and away from the air filter
element.
10/15-Hour Maintenance
Direct the air stream at the inside face of
the filter only!
6. Install the filter element, pre-filter and
cover in the reverse order of removal.
O.6-0. 7 mm
Clean the spark plug
and check the gap at the
electrode.
f
Figure 17
Pre- Filter
Filter Ele-J
Air Cleaner
Cover
Figure 16 B
CAUTION!
Never operate the unit if the air cleaner
assembly is damaged or missing!
Every 10 to 15 hours of operation:
m Remove and clean the spark plug. Adjust
the spark plug electrode gap to 0.6 - 0.7
mm. If the spark plug must be replaced,
use only an NGK CMR5H or equivalent
resistor type spark plug ofthe correct
heat range. See Figure 17.
The NGK CMR5H also meets the require-
ments for electro magnetic compliance (EMC).
CAUTION!
Before removing the spark plug, clean
the area around the plug to prevent
dirt and debris from getting into the
engine's internal parts.
50-Hour Maintenance
Every 50 hours of operation (more
often in dusty or extreme conditions)
Remove and clean the cylinder cover and
clean grass and dirt from the cylinder fins.
Debris
Figure 18
CAUTION[
Make sure you do not pierce the fuel
line with the end of the hooked wire.
The line is delicate and can be dam-
aged easily.
II Use a wire hook to extract the fuel
filter from inside the fuel tank. (Figure
19). Inspect the fuel filter element. If
it shows signs of contamination from
debris, replace it with a genuine Swisher
replacement fuel filter element. Before
reinstalling the filter, inspect the fuel
line. If you discover damage or deterio-
ration, the unit should be removed from
service unitl it can be inspected by a
Swisher-trained service technician.
Gearcase Lubrication
Every 20 Hours
Figure 20
Gearcase Grease Fitting
VIEWED FROM THE BOTTOM
Top off gearcase grease level by using a le-
ver-type grease gun to force 1-2 strokes of
high quality lithium-based grease through
the gearcase grease fitting.
Every 100 Hours
(or before long-term storage)
VIEWED FROM
THE BOTTOM
Figure 21
Gearcase
Cover
Remove the gearcase cover, and use
solvent and a soft brush to remove all
old grease from the gearcase. To refill,
hand-pack the gearcase with approximately
40-50 grams of high quality lithium-based
grease (50-70% of capacity). DO NOT
OVERFILL!
CAUTION[
II Over-lubricating may cause the
gearcase to run slower than normal,
and may also cause leakage from
excess grease.
Blades
Standard blades require no periodic adjust-
ments. Make sure all blade shoulder bolts
are tight and in good condition.
m Clean blades and apply a light coating of
oil to all metal surfaces. Vegetable oils
may be used to protect sensitive plants
from spotting.
Guide Bar
Locknut
Cutters
Spacer Socket Head
Figure 22 Shoulder Bolt
Plate
10
139/150-Hour Maintenance
Maintenance after first 139-hours, then every 150-hours thereafter.
m Combustion chamber should be decar- m Replace the spark plug annually: Use
bonized, and the valve clearance should only NGK CMR5H or equivalent resis-
be adjusted. It is highly recommended tor type spark plug of the correct heat
that this is done by a Swisher-trained range. Set spark plug electrode gap m
service technician. 0.024-0.028 inch (0.6 -0.7 mm).
The NGK CMRSH also meets the requirements
for electro magnetic compliance _MC).
Valve Adjustment
1. Remove cylinder cover, rocker arm cover,
and spark plug. Rotate the crankshaft
while observing the piston through the
spark plug opening. When the piston
is at the top of the compression stroke
(TDC), the valves can be adjusted.
CAUT|ON!
II Performing a valve adjustment
incorrectly may cause hard starting
and/or can damage the engine.
II If you are unfamiliar with this engine
or uncomfortable with this proce-
dure, consult with an authorized
Swisher servicing dealer.
2. L_)osen adjuster locknut so that the 2.5
mm Allen socket head adjustment screw
can turn freely.
3. Insert 0.10 mm (0.004") feeler gauge
between valve stem tip and rocker arm.
4. Turn adjustment screw (clockwise =
tighter, counter-clockwise = looser) until
feeler gauge is almost snug. Back off
just enough to allow gauge to slip out
with limited resistance.
5.
While holding the adjustment screw in
place with the Allen driver, tighten the
locknut with a wrench.
6. Turn engine over several times, and re-
turnthe to TDC-compression. Recheck
with proper feeler gauge to make sure
clearance adjustment did not change
as a result of tightening the locknut.
Readjust as necessary.
7. Replace rocker arm cover gasket to as-
sure proper sealing and install cover.
If a new gasket is not available and/or the
old gasket is not damaged, the old gasket
may be reused. Never use cracked or
damaged gaskets!
Long Term Storage
Whenever the unit will not be used for 30
days or longer, use the following proce-
dures to prepare it for storage:
1[ Clean external parts thoroughly.
1[ Drain all the fuel from the fuel tank.
All stored fuels should be stabilized with
a fuel stabilizer such as STA-BIL TM, if
Swisher E4 Engine Oil with fuel stabilizer
is not used.
CAUT|ON!
Gasoline stored in the carburetor for
extended periods can cause hard start-
ing and could also lead to increased
service and maintenance cost.
1[ Remove the remaining fuel from the fuel
lines and carburetor.
1. Prime the primer bulb until no more fuel
is passing through.
2. Start and run the engine until it stops
running.
3. Repeat steps 1 and 2 until the engine will
no longer start.
1[ Remove the spark plug and pour about
1/4 ounce of 2-cycle mixing oil into the
cylinder through the spark plug hole.
Slowly pull the recoil starter 2 or 3 times
so oil will evenly coat the interior of the
engine. Reinstall the spark plug.
1[ Before storing the unit, repair or replace
any worn or damaged parts.
1[ Remove the air cleaner element from the
carburetor and clean it thoroughly with
soap and water. Let dry and reassemble
the element.
11 Store the unit in a clean, dust-free area.
11
Spark Arrester Screen
If the engine becomes sluggish and low on
power, check and clean the spark arrester
screen.
_1 WARNING!
Never operate the unit with a dam-
aged or missing muffler or spark
arrested Operating with a missing
or damaged spark arrester is a fire
hazard and could also damage your
hearing,
1. With a 4 mm hex wrench remove the
3 engine cover screws and the engine
cover. See Figure 26.
2. With a 4 mm hex wrench remove the
3 muffler bolts and the muffler. See
Figure 26.
3. With a small flat bladed screwdriver
remove the 2 screws holding the spark
arrester screen and cover to the muffler.
See Figure 26.
4. Remove the screen and clean it with a
stiff bristle brush.
5. Inspect the cylinder exhaust port for any
carbon buildup.
If you note excessive carbon buildup,
consult with an authorized E4 Swisher
servicing dealer.Contact Swisher Inc. at
(800) 222-8183, or go to www.swisherinc.
corn for assistance.
6. Reassemble the spark arrester, muffler
and engine cover in the reverse order of
disassembly.
Long Term Storage
Whenever the unit will not be used for 30
days or longer, use the following proce-
dures to prepare it for storage:
II Clean external parts thoroughly.
II Drain all the fuel from the fuel tank.
Maintenance
Engine Cover
Screws
All stored fuels should be stabilized with
a fuel stabilizer such as STA-BIL TM, if
Swisher E4 Engine Oil with fuel stabilizer
is not used.
Muffler
Gasket
Cover Screws
Figure 26
CAUTION!
Gasoline stored in the carburetor for
extended periods can cause hard start-
ing and could also lead to increased
service and maintenance cost.
II Remove the remaining fuel from the fuel
lines and carburetoc
1. Prime the primer bulb until no more fuel
is passing through.
2. Start and run the engine until it stops
running.
3. Repeat steps i and 2 until the engine will
no longer start.
(]ouey
Muffler Bolts
Spark Arrester
Screen
Spark Arrester
Cover
II Remove the spark plug and pour about
1/4 ounce of 2-cycle mixing oil into the
cylinder through the spark plug hole.
Slowly pull the recoil starter 2 or 3 times
so oil will evenly coat the interior of the
engine. Reinstall the spark plug.
II Before storing the unit, repair or replace
any worn or damaged parts.
II Remove the air cleaner element from the
carburetor and clean it thoroughly with
soap and water. Let dry and reassemble
the element.
II Store the unit in a clean, dust-free area.
12
Troubleshooting Guide
What To Check Possible Cause Remedy
Vaporlock.
1
Valve adjustment.
Engine hot/heat soaked.
Lowfuel quality.
Valveclearance too tight.
Valveclearance too loose.
Let cool completely and restart.
Refill with fresh, clean unleaded gasoline with a pump
octane of87 or higher mixed with a 2-cycle air cooled
mixing oil that meets or exceeds ISO-L-EGDand/or
JASCOFC classified oils at 50:1gasoline/oil ratio.
Adjust valves. See page 10.
What To Check Possible Cause Remedy
Does the engine crank?
YEs
Good compression?
YEs
Does the tank contain fresh fuel
of the proper grade?
YEs
Is fuel visible and moving in the
return line when priming?
YEs
Is there spark at the spark plug
wire terminal?
Check the spark plug.
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Loosespark plug.
Excess wear on cylinder, piston, rings.
Fuel incorrect, stale, or contaminated; mixture
incorrect.
Check for clogged fuel filter and/or vent.
The ignition switch is in "O" (OFF) position.
Shorted ignition ground.
Faulty ignition unit.
Ifthe plug is wet, excess fuel may be in the cylinder.
The plug is fouled or improperly gapped.
The plug is damaged internally or ofthe wrong size.
Consult with an authorized servicing dealer.
I Tighten and re-test.
I Consult with an authorized servicing dealer.
Refill with fresh, clean unleaded gasoline with a pump
octane of87 or higher mixed with a 2-cycle air cooled
mixing oil that meets or exceeds ISO-L-EGDand/or
JASCOFC classified oils at 50:1gasoline/oil ratio.
Clean as required. Restart.
Move switch to "I" (ON) position and re-start.
Consult with an authorized servicing dealer.
Crank the engine with the plug removed, reinstall the
plug, and restart.
Clean and regap the plug to 0.6mm. Restart.
Replace the spark plug with a NGKCMR5H or
equivalent spark plug of the correct heat range.
Adjust the spark plug electrode gap to 0.6- 0.7 ram.
13
Troubleshooting Guide (continued)
Possible Cause
Operator is overworking the unit.
Carburetor mixture is too lean,
Improper fuel ratio.
What To Check
Is the engine overheating?
Fan, fan cover, cylinder fins dirty or damaged.
Carbon deposits on the piston or in the mufflen
Clogged air cleaner element.
Loose or damaged spark plug.
Engine is rough at all speeds.
May also have black smoke and/
or unburned fuel at the exhaust.
Air leakage or clogged fuel line.
Water in the fuel.
Piston seizure.
Remedy
Cut at a slower rate.
Consult with an authorized servicing dealer.
Refill with fresh, clean unleaded gasoline with a pump
octane of 87 or higher mixed with a 2-cycle air cooled
mixing oil that meets or exceeds ISO-L-EGD and/or
JASCO FC classified oils at 50:1 gasoline/oil ratio.
Clean, repair or replace as necessary.
Consult with an authorized servicing dealer.
Service the air cleaner.
Tighten or replace. Replace the spark plug with a
NGK CMR5H or equivalent spark plug of the correct
heat range. Adjust the spark plug electrode gap to 0.6
-0.7 mm.
Repair or replace fuel filter and/or fuel line.
Refill with fresh, clean unleaded gasoline with a pump
octane of87 or higher mixed with a 2-cycleair cooled
mixing oil that meets or exceeds ISO-L-EGDand/or
JASCOFC classified oils at 50:1gasoline/oil ratio.
Engine is knocking.
Faulty carburetor and/or diaphragm.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion chamber.
Consult with an authorized servicing dealer.
See above.
Check fuel octane rating; check for presence of
alcohol in the fuel (page 5). Refuel as necessarg
Consult with an authorized servicing dealer.
14
Troubleshooting Guide (continued)
Symptom Possible Cause Remedy
Clogged air cleaner element. Clean the air cleaner element.
Poor acceleration.
Engine stops abruptly.
Engine difficult to shut off.
Clogged fuel filter.
Carburetor mixture too lean.
Idle speed set too low.
Switchturned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Cutting attachment moves at
engine idle.
Replacethe fuel filter.
Consult with an authorized servicing dealer.
Adjust:3,000 (_+250)RPM (min%
Reset the switch and re-start.
Refuel.
Replacefuel filter.
[)rain and refill with fresh, clean unleaded gasoline
with a pump octane of 87 or higher mixed with a
2-cycleair cooled mixing oilthat meets or exceeds
ISO-L-EGDand/or JASCO FCclassified oils at 50:1
gasoline/oil ratio.
Shorted spark plug or loose terminal.
Ignition failure.
Piston seizure.
Ground (stop) wire is disconnected, or switch is
defective.
Overheating due to incorrect spark plug.
Overheated engine
Engine idle too high.
Broken clutch spring or worn clutch spring boss.
Clean and replace spark plug, tighten the terminal.
Consult with an authorized servicing dealer.
Test and replace as required.
Replacethe spark plug with a NGK CMR5Hor
equivalent spark plug of the correct heat range.
Adjust the spark plug electrode gap 0.6 mm.
Idle engine until cool. Refer to page 7. (overheated
engine).
Set idle: 3,000 (_+250)RPM (min%
Replace spring/shoes as required, check idle speed.
Excessive vibration.
Cutting attachment will not move.
Warped or damaged cutters.
L_osegearcase.
Damaged crankshaft/worn or damaged bushings.
Damaged/worn clutch.
Damaged gearcase
Inspect and repair cutters as required.
Tighten gearcase securely
Inspect and replace as necessary.
Inspect and replace as required
Consult with an authorized servicing dealer.
15
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