Craftsman 636.796912 User Manual
owner's
manual
MODEL NO.
636.796912
CAUTION:
Read Rules for
Safe Operation
and Instructions
Carefully
êêl9501201
8619S01201 r/88
CRAFTSMAN
37.7 cc GAS POWER BLOWER
® Assembly ® Maintenance
® Operation «Repair Parts
Sears, Roebuck and Co., Chicago, III 60684 U.S.A.
PRINTED IN JAPAN
TWO YEAR LIMITED WARRANTY ON CRAFTSMAN
POWER BLOWER 636.796912
For tvvo years from date of purchase, when this POWER BLOWER is maintained, lubricated, and tuned up according to
the operating and mainlenance instructions in the owner's manual, Sears will repair free of charge any defect in material or
workmanship.
This warranty excludes blower pipes, spark plug, and air cleaner: which are expendable pans and become worn during
normal USB.
If this POWER SLOWER is used for commercial or rental purposes, this warranty applies for only 30 days from the date
of purchasa.
WARRANTY SERVICE IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER/DEPARTMENT IN THE UNITED STATES, This warranty applies only while this product is in use in the United States,
This warranty gives you specific legal rights, and you may also have other rights which very from state to state.
SEARS, ROEBUCK AND CO.
DEPT. 698/731A
SEARS TOWER
CHICAGO, ILLINOIS 60684
,4|li
INTRODUCTION
The Sears Power Blower, Mode! 636.796912 is a lightweight, high performance 2 cycle two stroke,
gasoline powered blower, which is designed for autumn leaves, driveway and sidewalk sweeping, gutter
cleaning, light snow and debris removal. The blower works faster and more efficiently than rakes or
brooms. Excellent balance, a vibration damping system and light weight ensure comfortable, safe
and fatigue-free operation.
This manual provides instructions for assembly, operation and maintenance for your unit. Be sure to
read this manual before operation.
IMPORTANT
RULES FOR SAFE OPERATION
1. Gasoline
(1) Handle gasoline with care. It is high inflammable.
(2) Use proper gasoline-oil fuel mixture. See P. 4.
(3) Refuel before starting work.
(4) Do not refuel a hot engine.
{5} Avoid spilling fuel or oil. Always wipe unit dry before using.
(6) Move at least 3 meters (10 feet) away from the fueling point before starting engine.
(7) Always store gasoline in approved container.
2. Operation
(1) Do not operate in unventilated area,
(2) Do not allow bystanders in work area.
{35 Always wear light clothing.
{4) Aiways wear safety glasses and a face filter mask.
Wear ear protectors where possible.
{5} Do not touch muffler, spark plug and rotating parts,
(6) Do not run the machine without flexible corrugated pipe and spent pipe or the engine
may be damaged,
(7) Do not use the machine in such a way that the end of spout pipe may be covered,
Check
ns Aiways check periodically for efficient and safe operation.
(2) Before Storing, drain fuel tank and carburetor.
(3) Wash air cleaner element with neutral detergent and dry it well.
(4) Remove dust from blower.
(5) Tighten bolts further if they are loose.
(6) Replace damaged parts.
(7) Always use proper parts for replacement.
SECTION i.
SECTION II,
SECTION ill.
SECTION IV,
SECTION V.
SECTION VI.
SECTION Vtl.
SECTION Vlil.
SECTION IX.
SECTION X.
SECTION XI.
TABLE OF CONTENTS
TECHNICAL SPECIFICATIONS ..........................
COMPONENT IDENTIFICATION
......................
ASSEMBLY INSTRUCTIONS.............................
PREPARATION FOR USE
STARTING THE ENGINE
STOPPING THE ENGINE
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OPERATING THE POWER BLOWER ....
CHECK AND MAINTENANCE
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STORAGE AFTER USE......................................
TROUBLESHOOTING , .,
SPARE PARTS LIST ...
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TECHNICAL SPECIFICATIONS Mode! 636.796912
Dimensions :
Weight, dry ;
Fuel capacity ;
Engine Type :
Displacement :
Ignition system ;
Carburetor ;
Spark plug ;
Spark plug gap :
Starter ;
Max. air volume :
Max. air speed :
Muffler :
Fuel :
*Specifications are subject to change without notice.
LxWxH = 450x490x495mmf17.7 in. x 19.3 in.x 19.5 in.)
8 kg !17.6 lbs.)
2.4 litre iO.634 gal.)
Air cooled two stroke
37.7 cc {2.3 cu.in.)
Solid State ignition
Float type
S.T.D. 360942
0.6-0.7 mm (.024 - .028")
Automatic recoil
11 m^/min. (385 cu.ft./min.)
83 m/sec. (273 ft/sec.)
Spark arrester
Fuel-Oil Mix Between 20 and 25 to 1
For the first twenty hours, use the mixing ratio of between 15
and 20 to 1
m. ASSEMBLY INSTRUCTIONS
1. Attach throttle lever to the machine. (Fig, 2)
Note; Ensure that the lever can be operated normally.
Screw
Figure 2
2, Attach shoulder straps to the machine. (Fig, 3}
Note: Adjust the straps to fit your body.
WARNING; Experience indicates that alcohol blended fuels
icalled gasohol or using ethanol or methanol) can attract
moisture which leads to separation and formation of acids
during storage. Acidic gas can damage the fuel system of an
engine while in storage.
To avoid engine problems, the fuel system should be emptied
before storage for 30 days or longer Drain the gas tank, start
the engine and let it run until the fuel lines and carburetor
are empty. Use fresh fuel next season. See Storage Instructions
for additional information.
Never use engine or carburetor cleaner products in the fuel
tank or permanent damage may occur,
CAUTION:
• When preparing fuel mixture, mix only the amount
needed for the job you are to do Do not use fuel mixture
that has been stored longer than two (2) months. Fuel
mixture stored lortger than this will cause hard starting
and poor performance, if fuel mix has been stored
longer than this time it should be removed and filled
with a fresh mixture.
• Use only a good grade of regular gasoline,
0 Use only a reputable brand of 2-cycle, air cooled engine
oil. Sears Chain Saw Oil is especially suited to this
engine,
• For the first twenty hours, use the mixing ratio of be
tween 15 and 20 to 1
Figure 3
3. Assemble blower pipes, (Fig, 1)
Note: Assemble pipes securely or they may separate
. while operating.
IV. PREPARATION FOR USE
1, Ensure again that all parts are assembled normally and
that all nuts and bolts are properly tightened
2. Adjust shoulder straps to fit your body so that pads rest
comfortably on your shoulder or you will be tired
3 Fuel and oil mixing
(1) Mixing ratio of fuel and oil: 20— 25:1
Example; 20 : 1 = gasoline 1 gal, : oil 7 oz,
25 : 1 = gasoline 1 gal, : oil 6 oz
(2) Pour half the gasoline into the container, add oil and
shake to ensure thorough mixing. Now add the
remainder of gasoline and shake again
Fill the tank with fuel without spilling.
4.
i1) Do not fill fuel above fuel limit level. (Fig. 4)
(2) Wipe all spilled fuel with a dry cloth,
(3) Always attach the fuel strainer, (Fig, 11)
(4) Tighten fuel cap securely,
uei limit level
Figure 4
V. STARTING THE ENGINE (Fig. 5 & 6)
1. Open fuel cock, (Fig 5)
2, Close choke Sever, (Fig. 5)
Note; In winter, close fully, but in summer or when the
engine is warm, open partly or fully.
Figure S
3. Push up throttle lever, (Fig. 7)
4. Holding the machine by your left hand and putting your
left foot on the machine frame, give a strong and straight
pull to recoil starter by your right hand. (Fig. 6j
CAUTION
Do not pull off rope, but return it gently with care.
UP (Highspeed)
“I“ Throttle lever
DOWN (Low speed)
StQPTOtfoffllM^ ’
Figure 7
VII. OPERATING THE POWER BLOWER
1, Adjust shoulder straps correctly to make the machine fit
your body .
2, After the engine fires, put the machine on your back
without inclining.
3. The velocity of air stream can be controlled from a gentle
breeze to a high-speed blast by throttle lever,
4. Select the best speed for each application of the blower.
Example: low speed for blowing dry leaves from lawn
and high speed for moving gravel or dirt from
driveway, (Fig. 8 & 9)
Figure 6
5. After the engine fires, open choke lever gradually to re
duce engine speed
6, Warm up the engine at tow speed
Note; winter: about 5 min. summer: 2 — 3 min.
VI. STOPPING THE ENGINE
1, Push down throttle lever to reduce engine speed.
2, Stop the engine by pushing stop button. (Fig. 7)
3, Put the machine down on the ground and close fuel cock.
CAUTION
о Do not point the blower pipe in the direction of people
or animals.
• Always wear safety glasses and use-a dust mask,
e Do not operate in unventilated area.
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