Text preview for : ys624t.pdf part of Yamaha YS624T YAMAHA YS624 Snow Blower Owner's Manual
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G-500
PERIODIC
Pre-Ope- Initial Every
MAINTENANCE No_ ration 3 Before
Item Remarks 1 month
check months Storage season
or 20 Hr
(daily) or 50 Hr
8-501
MAINTENANCE CHART
8. Starting System
Check recoil
starter. Operation.
. .
Regular maintenance is most impor-
tant for the best performance and
9.* Decarbonization More frequently
if necessary.
.
safe operation. 10. Auger Gear Oil Replace . .
Check damage.
Pre-Ope- Initial Every
ration 3 Before
11. Skid/Scraper Adjustif .
No. Item Remarks 1 month necessary.
check months Storage season
or 20 Hr
Check condition
(daily) or 50 Hr
12.* Auger
Check shear bolt
damage.Replace
itifnecessary.
. . . .
1. Spark Plug
adjust gap and . . Check deflection/
clean. Replace if
necessary . 13. DriveTrack/
Wheel
air pressure. . . .
Check oil level . Ajustif
necessary
.
2. EngineOil
Replace
Clean fuel cock
. . 14.* DriveBelt Check damage . .
3. Fuel Filter and fuel tank
filter. Replace if
. 15. Lubrication
Lubricatewith
greaseor
SAE 5W30 oil.
.
necessary. Check all fittings
4.* Valve Clearance
Check and adjust
when engine is
cold.
. 16.* Fittings/
Fasteners
and fasteners.
Correct if
necessary.
.
Check fuel hose
5.* Fuel Line for crack or
damage.Replace
. *: It is recommended that these items be
serviced by a Yamaha dealer or other
qualified mechanic.
if necessary.
Checkforleakage.
6.* Exhaust System Retighten or
replace gasket if
.
necessary.
Check choke
7. Carburetor (Control lever) .
operation.
-29- -30-
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--
G-520 8-561
SPARK PLUG INSPECTION Oil replacement
You should periodically remove and 1. Proceed with the "OIL LEVEL
inspect the spark plug. CHECKING" items 1.
1. Check for discoloration and re- 2. Place an oil pan under the en-
move the carbon. gine. Remove the oil filler cap
Standard electrode color: and oil drain plug so that the oil
Tan Color can be completely drained.
3. Check the drain plug gasket and
oil filler cap a-ring. If damaged,
I 2. Check the spark plug type and
replace it.
gap.
CD O-ring
I
Standard Spark Plug: BPR4HS 4. Reinstall the oil drain plug.
I
Spark Plug Gap:
0.6-0.7 mm Drain Plug:
(0.024 - 0.028 in) 48 Nm (4.8 m-kg,
I
34.7 ft-Ib)
703-001
CD Gap
,I 5. Add engine oil.
3. Install the spark plug. Recommended oil:
II Spark Plug Torque: !AI SAE 10W-30, 10W-40
20 Nm (2 m-kg, 14 ft-Ib) []! 10W-30. 0W-~
1 rnJ SAE 5W-30
~ 5W~30 I Engine oil quantity:
G-540
°F , I
YS624T /WM
ENGINE OIL 02040
0c, -20 0.68 L (0.60 Imp qt,
0
I
8-541 -30 -20 -10 0.72 US qt)
Oil level checking YS828T /WM
1. Place the machine on a level sur-
0.95 L (0.84 Imp qt,
face and warm up the engine for 1.04 US qt)
several minutes. Then stop the
engine. NOTE:
2. Make sure the engine oil is be- Recommended engine oil classifica-
tween upper and lower levels. tion; API Service "SE" or "SF" if not
Add oil as necessary. available, "SD".
CD Upper level
Be sure no foreign material
-31- -32- enters the crankcase.
l
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-
8-576
AUGER GEAR OIL
Replacement
·
·
Be sure the main switch key
and spark plug lead are re-
moved or disconnected
fore replacement.
be-
Be sure the auger and im-
peller have stopped before
4. Reinstall the oil drain plug.
NOTE:
Drain Plug:
31 Nm (3.1 m-kg,
22.4 ft-Ib)
Recommended gear oil classifica-
tion; API Service "SE" or "SF" if not
replacement. available, "SD".
· Be sure no foreign material
enters the crankcase.
· Place the machine so that the
handlebar is up and auger
housing is down when ad-
1. Place an oil pan under the gear
-
ding gear oil.
case. Remove the oil drain plug · Be sure the machine is se-
so that the oil can be complete- curely placed.
ly drained.
2. Check the drain plug gasket. If
damaged, replace it. 8-586
SKID (Auger Clearance)
CD Gasket ADJUSTMENT
3. Add gear oil.
· Be sure the main switch key
Recommended Oil: and spark plug lead are re-
SAE #90 moved or disconnected be-
Gear Oil Quantity: fore adjusting.
80 cm3 (2.8 Imp OZ, · Be sure the auger and im-
2.7 US OZ) peller have stopped before
adjusting.
-33- -34-
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8-588
1. Placethe machine on a level sur- FOOT PEDAL (Auger Height)
face and loosen the skid nut. ADJUSTMENT
2. Raise or lower the skid to adjust 4-Stage Position
the auger clearance between the 1. Shift the shift lever to "Neutral"
lowest auger edge and a level position. lu!
surface. 2. Hold the handlebars with both
hands while stepping lightly on
Standard Auger Clearance: the foot pedal.
5 mm (0.2 in) 3. Raise or lower the handlebar to
I
adjust the foot pedal position.
CD Skid Standard Foot Pedal Position:
~ Auger clearance 2nd groove from the top
I CIDLevel surface
@ Lowest auger edge CD Foot pedal
I
~ Top groove
CID Free position
II NOTE:
NOTE: · Lower the foot pedal position to .
...
.11 · Use the standard clearance for increase the auger height.
smooth concrete or asphalt · Shift the foot pedal to a lower
roads. position when reversing the
· Increase the clearance for stone machine.
or gravel roads. Free Position
..
1. Raise or lower the handlebar to
adjust the auger height.
8-590
3. Tighten the skid nuts. SCRAPER ADJUSTMENT
NOTE: II
Be sure the skid bottom is in com- · Be sure the main switch key
plete contact with the levelsurface. and spark plug lead are re-
moved or disconnected be-
fore adjusting.
· Be sure the auger and im-
peller have stopped before
adjusting.
-35- -36-
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1. Place the machine on a level sur-
face and loosen the scraper bolts
and nuts.
2. Raise or lower the scraper to ad-
just the scraper height between
the scraper edge and a level
surface.
..
6-592
AUGER SHEAR BOLT
REPLACEMENT
· Be sure the main switch key
and spark plug lead are re-
moved or disconnected be-
fore replacement.
Standard Scraper Height: · Be sure the auger and im-
I
5 mm (0.2 in) peller have stopped before
replacement.
,I
CD Scraper
Replace the auger shear bolts when
!I (2) Scraper height
3 ~m
(3).4=.... though the impeller is rotating.
II
- T :~:~:~
NOTE:
1. Remove the snow caught on the
· Use the standard height for
auger.
11
smooth concrete or asphalt
roads. .
..
2. Remove the broken shear bolts.
.EJ · Increase the height for stone or
gravel roads.
3. Install the new shear bolts on the
auger and auger shaft.
3. Tighten the scraper bolts and
nuts. NOTE:
Use the spare shear bolts in your tool
NOTE: kit.
Be sure the scraper edge is parallel
to the level surface.
-37- -38-
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6.594 6-596
DRIVE TRACK LUBRICATION
Deflection Check NOTE:
NOTE: Use the grease or oil (SAE 5W30) for
Be sure the track is rotated several lubrication.
turns and placed on a level surface
before checking.
1. Lubricate the control rods as
shown.
Measure the tracks vertical deflec- 2. Remove the under plate and
lubricate the transmission shaft
tion by adding 5 kg (11 Ib) of force as shown.
at the center of track.
CD Deflection
~ 5 kg (11 Ib) force
Do not grease shaft excessively
as excess grease may be thrown
Standard Track Deflection: onto drive wheels.
YS624TM
8.5-12 mm
(0.33 - 0.47 in)
3. Install the under plate.
YS828TM
11-16mm
(0.43 - 0.63 in)
If the deflection exceeds specified,
adjust the deflection.
Track Adjustment
1. Loosen the adjuster locknuts.
2. Turn the adjusters in or out un-
til proper track deflection is
achieved.
CD Locknut
~ Adjuster
3. Tighten the locknuts.
-39- -40-
('
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G-600
G-650
FUEL FILTER
TROUBLESHOOTING
WARNING:
G-651
Never use or be near the fuel and
Engine won't start
solvent while smoking or in the
1. Fuel systems
vicinity of an open flame.
No fuel supplied to combustion
chamber.
o No fuel in tank Supply fuel
G-601
o Clogged fuel line Clean fuel
Fuel cock line
1. Turn the fuel cock to "OFF". ,0 Foreign matter in fuel cock
2. Remove the filter cup, gasket, Clean fuel cock
and filter screen. o Clogged carburetor Clean car-
3. Clean the filter screen and bot- buretor
tom of the filter cup with solvent. 2. Electrical systems
4. Check the gasket. Replace it if Poor spark
damaged. o Spark plug dirty with carbon or
5. Wipe the filter cup and insert it wet... .Remove carbon or wipe
with filter screen and gasket. spark plug dry
II G-620
Fuel tank filtc!;'r
o Faulty ignition system Consult
dealer
3. Compression
1. Remove the fuel tank cap and Insufficient
filter. o Worn out piston and cylinder
Consult dealer
CD Filter o Loose cylinder head nuts
Tighten nuts properly
2. Clean the filter with solvent. If o Damaged gasket Replace
damaged, replace. gasket
3. Wipe the filter and insert it.
- WARNING:
Be sure the tank cap is tightened
securely.
-41- -42-
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G.700
STORAGE 2. Pull the recoil starter until you
Long term storage of your machine feel compression. Then stop
will require some preventive proce- pulling. (This prevents the
dures to guard against deterioration. cylinder and valves from rust.
ing.)
704-001
G-701 B-716
DRAIN THE FUEL CHASSIS
Drain the fuel tank, fuel cock, and 1. Lubricate all specified points
carburetor float bowl. with grease or oil (SAE 5W30).
Pour a cup of SAE 10W30 or 20W40 2. Loosen the track and block up
motor oil into the tank, shake the the chassis so that the track is
tank to coat the inner surfaces suspended above the ground.
thoroughly and drain off the excess (T-Model)
oil.
3. Clean exterior of the machine
and apply a rust inhibitor.
4. Store the machine in a dry, well-
I
ventilated place, with the cover
II placed over it.
5. The machine must remain in a
vertical position when stored,
carried or operated.
B-710
ENGINE
1. Remove the spark plug, pour
about one tablespoon of SAE
10W30 or 20W40 motor oil into
the spark plug hole and reinstall
the spark plug. Recoil start the
engine by turning over several
times (with ignition off) to coat
the cylinder walls with oil.
-43- -44-
('
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8.800
SPECIFICATION WIRING DIAGRAM
DIMENSIONS
Model Code Number Unit YS624TM YS624WM YS828TM YS828WM Overall Length mm (in) 1,390 (54.7) 1,420 (55.9) 1,430 (56.3) 1,460 (57.5)
Overall Width mm (in) 610 (24.0) +- 710 (28.0) +-
Overall Height mm (in) 1,135 (44.7) 1,140 (44.9) 1,135 (44.7) 1,140 (44.9)
Dry Weight kg lib) 92 (203) +- 103 (227) +-
ENGINE
Model Code Number Unit YS624TMI YS624WM I YS828TM I YS828WM
Type *1 Forced air cooled 4-stroke gasoline SV L-c::J
Cylinder Arrangement *2 Inclined, 1-Cylinder
Displacement cmJ 202 291
.y--c::J
Bore x Stroke mm (in) 69x54 (2.7x2.1) 78x61 (3.1 x 2.4)
Maximum Output psi rpm 6/4,000 8/4,000 -
Fuel
B
Regular gasoline
Fuel Tank Capacity Total L (Imp gal, US gal) 5 (1.1, 1.32)
Engine Oil Quantity L (Imp qt, US qt) 0.68 (0.60, 0.72) 0.95 (0.84, 1.04)
Ignition System T.C.I.
Spark Plug: Type BPR4HS (NGK)
0.6-0.7 mm (0.024-0.028 in)
t
.:..
Gap .........
.............
! CHASSIS ~~~~~~~~
.:.:.:.:
Model Code Number Unit T
YS624TM YS624WM YS828TM I YS828WM
:1
Snow Removal:System 2 stage, auger blower
Capacity Ton/h Ub/li) 35 (1,290) 50 (1,840)
1m Width mm (in) 600 (24) 710 (28)
Height
Snow BlowingDistance
Maximum
Chute Turning Radius
mm (in)
m (ft)
deg
550 (22)
14 (46)
220
620 (24.5)
15 (50)
Y Yellow 011/4
II
CD Main switch G-825
B Black (j IIID
Auger Up-down System
1
Manual
I
~ TCI unit G-835
Driving System Track Wheel Track I Wheel
Transmission System Friction Disc B/W Black/White 1111/1
@ Lighting coil 8-802
Vehicle Speed: 1st km/h (m.p.h.) 0.97 (0.61) +- +- +-
Forward 2nd km/h (m.p.h.) 1.89 (1.18) +- +- +-
3rd km/h (m.p.h.) 2.76 (1.73) +- +- +-
1
4th km/h (m.p.h.) 3.60 (2.25) +- +- +-
r
Neutral +- +- +-
Reverse 1st km/h (m.p.h.) 1.74 (1.09) +- +- +-
2nd +- +- +- ,
km/h (m.p.h.) 2.68 (1.68)
-45-
-46-
","
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