Yamaha YT624 User manual

Read this manual carefully before operating this machine.
7T0-28199-70
YT624
Snowblower
OWNER’S MANUAL
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INTRODUCTION
Congratulations on your purchase of your new Yamaha.
This manual will provide you with a good basic understanding of the operation and mainte-
nance of this machine.
If you have any questions regarding the operation or maintenance of your machine, please
consult a Yamaha dealer.
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
WARNING A WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
NOTICE A NOTICE indicates special precautions that must be taken to
avoid damage to the machine or other property.
TIP A TIP provides key information to make procedures easier or clearer.
* Some illustrations and text shown in this manual may differ from the actual model due to
changes in specications or other reasons.
* Take care of this manual. Please attach this manual to the product when it is lent or trans-
ferred to another person.
* When depositing the product, batteries, oil or other components, consult a Yamaha dealer
for guidelines on protecting the environment.
* All Yamaha products have warranty cards.
Read the warranty card carefully, check to see that the dealer name is sealed on its rear
side, and keep the card in a safe place.
If you have any questions, please consult a Yamaha dealer immediately.
Yamaha dealer is looking forward to serving you as a helpful adviser.
YT624
OWNER’S MANUAL
©2019 by Yamaha Motor Powered
Products Co., Ltd.
1st Edition, April 2019
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Powered
Products Co., Ltd.
is expressly prohibited.
Printed in Japan
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CONTENTS
PRODUCT SERIAL NUMBER LABEL.....1
SAFETY INFORMATION ..........................2
LOCATION OF IMPORTANT LABELS.....7
DESCRIPTION..........................................9
CONTROL FUNCTION ...........................13
ENGINE SWITCH ................................13
RECOIL STARTER...............................14
THROTTLE/CHOKE LEVER................14
SHIFT LEVER......................................15
CHUTE DIRECTION
CONTROL LEVER ...........................15
CHUTE DEFLECTOR
CONTROL LEVER ...........................16
DRIVE CLUTCH LEVER......................17
AUGER CLUTCH LEVER ....................17
AUGER HOUSING HEIGHT
CONTROL LEVER ...........................18
FUEL TANK CAP..................................18
FUEL GAUGE ......................................19
FUEL COCK.........................................19
SKID.....................................................20
SCRAPER............................................20
SHEAR BOLT GUARD.........................21
CLEAN-OUT TOOL
(LODGED SNOW REMOVER) .........22
WORKING LIGHT ................................22
PRE-OPERATION CHECK .....................23
CHECK BEFORE USE ........................23
CHECKING THE FUEL LEVEL............24
CHECKING THE ENGINE OIL.............25
CHECKING THE TRANSMISSION
(HST) OIL .........................................26
CHECKING THE AUGER.....................27
CHECKING THE HANDLEBAR
FOR LOOSENESS OR PLAY...........27
CHECKING THE STARTER
MOTOR OPERATION.......................27
CHECKING THE ENGINE FOR
POOR STARTING OR
ABNORMAL NOISE .........................27
CHECKING THE EXHAUST
SYSTEM...........................................27
CHECKING THE AUGER CLUTCH
AND DRIVE CLUTCH FOR
OPERATION MALFUNCTION ..........27
CHECKING THE CHUTE
OPERATION .....................................27
CHECKING ANY TROUBLES
NOTICED WHEN PREVIOUSLY
OPERATING
THE SNOWBLOWER .......................27
OPERATION ...........................................28
STARTING THE ENGINE
(FOR RECOIL START) .....................28
STARTING THE ENGINE
(FOR ELECTRIC START).................30
STOPPING THE ENGINE....................32
MOVING THE SNOWBLOWER ...........32
CLEARING SNOW...............................34
STOPPING THE SNOWBLOWER .......38
MOVING THE SNOWBLOWER
WITH THE ENGINE STOPPED........39
HIGH ALTITUDE OPERATION ............40
PERIODIC MAINTENANCE....................41
CHECK BEFORE USE ........................41
PERIODIC INSPECTION.....................41
MAINTENANCE CHART......................42
CHANGING THE ENGINE OIL ............44
REFILLING THE TRANSMISSION
(HST) OIL .........................................46
CHANGING THE WORM CASE OIL....47
CHECKING AND CLEANING
THE SPARK PLUG ...........................48
CLEANING THE FUEL STRAINER .....49
ADJUSTING THE SKIDS.....................50
REPLACING THE AUGER SHEAR
BOLTS ..............................................52
REPLACING THE IMPELLER
SHEAR BOLT ...................................53
ADJUSTING THE SCRAPER ..............54
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CONTENTS
CHECKING AND ADJUSTING
THE TRACK TENSION.....................55
REPLACING THE SPROCKET PIN.....56
BATTERY .............................................57
REPLACING THE FUSE .....................59
LUBRICATING EACH PART ................61
STORAGE ...............................................63
SHORT-TERM......................................63
LONG-TERM........................................66
SPECIFICATIONS...................................67
INDEX......................................................69
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– 1 –
PRODUCT SERIAL NUMBER LABEL
Both the product name and the product
serial number are required when making
inquiries and reordering of parts.
Check the product serial number label, and
ll the product name and the serial number
columns at right.
Also, record the product name and product
serial number separately in case of theft or
emergency.
1
1. Product serial number label
1
2
MADE IN JAPAN
1. Product name
2. Product serial number
Product name:
Product serial
number:
Date of
purchase:
Purchased
from:
Phone:
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– 2 –
SAFETY INFORMATION
Read and understand this owner’s manual
and labels attached to the Snowblower
completely before operating the Snowblow-
er.
1
1. Owner’s manual
Be sure to perform the pre-operation
checks and periodic maintenance.
Do not allow children or anyone who does
not understand how to operate the Snow-
blower correctly to operate it.
Never operate the Snowblower when you
are tired or under the influence of alcohol
or drugs.
Wear non-slip footwear, warm clothing and
gloves when operating the Snowblower.
Do not operate the Snowblower in low vis-
ibility conditions, such as early morning
and night time.
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– 3 –
SAFETY INFORMATION
Do not start the engine with the guard or
cover removed.
Check for foreign objects in rotating parts
such as the auger and impeller or in the
chute before operating.
3
2
1
1. Auger
2. Impeller
3. Chute
Never start the engine indoors except when
you are moving the Snowblower.
Exhaust fumes contain harmful chemicals
such as carbon monoxide. Open the doors
and adequately ventilate the building even
when you are moving the Snowblower.
Gasoline is a highly ammable and easily
ignitable fuel. Always turn off the engine
and avoid open flame while filling the fuel
tank.
!
S
Remove wooden blocks, cans, hoses,
wires, ropes and all other foreign objects
from the location you wish to clear snow
from before operating the Snowblower.
To clear snow on gravel, make sure there
is a clearance between the auger housing
and ground to prevent gravel from being
blown together with snow.
1
2
1. Auger housing
2. Clearance
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– 4 –
Do not allow anyone except the operator of
the Snowblower near the place you wish to
clear snow from.
Do not look in the rotating parts such as
the auger and impeller or in the chute or
put your face, arms or legs near such parts.
1
2
3
1. Auger
2. Impeller
3. Chute
Do not blow snow toward people, buildings,
automobiles, etc.
Do not fix the auger clutch lever or drive
clutch lever intentionally as this will prevent
the safety device to operate.
Do not blow snow across the face of a
slope.
Do not use the Snowblower to clear snow
on a roof or steep slope.
SAFETY INFORMATION
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– 5 –
If abnormal vibrations, noises or odors are
noticed coming from the Snowblower, stop
the engine and ask a Yamaha dealer to
check and/or perform maintenance.
When you park the Snowblower, stop it
on a at surface and lower auger onto the
ground. Then, place shift lever in a position
other than “N” (Neutral).
1
2
1. Auger
2. Shift lever
The muffler (exhaust pipe) will still be hot
immediately after the engine has stopped.
Place the Snowblower in a place where pe-
destrians are not likely to touch the Snow-
blower.
Do not use the Snowblower for purposes
other than clearing snow.
To dislodge snow from the chute, stop the
engine, and use the clean-out tool.
1
1. Chute
SAFETY INFORMATION
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– 6 –
To attach a cover or similar device to the
Snowblower, wait until the engine and muf-
er have completely cooled down.
SAFETY INFORMATION
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– 7 –
LOCATION OF IMPORTANT LABELS
To use the product safely, read the labels afxed to the machine, and use according to the
instructions on the labels.
TIP
If these important labels are damaged or missing, contact a Yamaha dealer for replacements.
1
2
6
543
7
1
2
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– 8 –
LOCATION OF IMPORTANT LABELS
3
4 5
6 7
EMISSION CONTROL INFORMAT ION
YAMAHA MOTOR CO.,LTD.
EMISSION COMPLIANCE PERIOD :

HOURS
EF :

DISPLACEMENT :

cc
This engine is certified to operate on unleaded gasoline.
ENGINE OIL :

TYPE :

No other adjustments needed.
Check owner's manual for further details.
THIS ENGINE CONFORMS TO THE SMALL OFF-ROAD SPARK
IGNITION ENGINE EMISSION REGULATIONS APPLICABLE TO

MODEL YEAR ENGINES.
EM
EMISSION CONTROL INFORMAT ION
YAMAHA MOTOR CO.,LTD.
EM
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– 9 –
DESCRIPTION
1. Chute
2. Mufer
3. Fuel tank
4. Working light
5. Fuel gauge
6. Transmission (HST) oil reservoir
7. Spark plug cap/Spark plug
8. Left side cover
9. Impeller
10.Shear bolt guard
11.Auger
12.Auger housing
1 2 3 4
5
6
7
8
9
10
11
12
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– 10 –
1. Engine oil inspection cover
2. Clean-out tool (lodged snow remover)
3. Right side cover
4. Scraper
5. Skid
6. Track
7. Recoil starter
8. Fuel cock
9. Air lter
10.Control panel
11.Handlebar
12.Fuel tank cap
1
2
3
4
5
6
7
8
9
10
11 12
DESCRIPTION
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– 11 –
DESCRIPTION
1. Drive clutch lever
2. Shift lever
3. Chute direction control lever
4. Chute deector control lever
5. Throttle/Choke lever
6. Auger clutch lever
7. Auger housing height control lever
8. Engine switch
1
2 3 4 5
6
7
8
1. Fuel tank cap
2. Fuel tank
3. Fuel gauge
1
32
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– 12 –
DESCRIPTION
1. Electric starter
2. Fuse
3. Battery
4. Engine oil ller cap
1 2 3
4
1
2
1. Carburetor 2. Engine oil drain bolt
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– 13 –
CONTROL FUNCTION
ENGINE SWITCH
1
2
3
5
4
STOP
ON
START
1. “STOP
5”
2. “ON
7”
3. “START
6”
4. Engine switch key
5. Grip
The engine switch controls the ignition and
the starter motor system.
STOP 5:
Position to stop the engine.
The key can be inserted or removed.
ON 7:
Position when the engine is running.
The key cannot be removed.
TIP
The working light automatically comes on
when the engine switch is turned to “ON 7”.
The working light turns off when the engine
switch is turned to “STOP 5”.
START 6:
Position to start the engine.
The starter motor cranks the engine. When
releasing the grip, the key returns to the “ON
7” position automatically.
The key cannot be removed.
NOTICE
9Do not continue to use the starter
motor for more than 5 seconds. Do-
ing so will consume a large amount
of power and it may exhaust the bat-
tery.
9Do not leave the key in the “ON 7”
position for a long time while the en-
gine is stopped. It may exhaust the
battery.
TIP
Remove the engine switch key when you
are not using the Snowblower.
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– 14 –
CONTROL FUNCTION
RECOIL STARTER
1
1. Recoil starter handle
Used to start the engine.
Pull the recoil starter slowly until it is en-
gaged, then pull it briskly.
NOTICE
9Pull the recoil starter handle straight.
9Return the recoil starter handle slow-
ly.
9Do not touch the recoil starter handle
while the Snowblower is operating.
TIP
Pull the recoil starter handle after turning
the engine switch key to the “ON 7” posi-
tion.
THROTTLE/CHOKE LEVER
1
2
3
4
1. Throttle/Choke lever
2. “START
1”
3. “FAST
:”
4. “SLOW ”
Throttle/Choke lever controls the choke and
the engine speed.
START 1:
Lever position to start the engine.
FAST ::
Lever position to warm up the engine, start
snow clearing or moving.
SLOW :
Lever position to idle the engine.
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– 15 –
CONTROL FUNCTION
SHIFT LEVER
1
2
34
1. Shift lever
2. “F” (Forward)
3. “N” (Neutral)
4. “R” (Reverse)
Used to switch to forward or reverse move-
ment, and to control traveling speed.
NOTICE
Move the shift lever slowly from the “N”
(Neutral) position to the desired position
appropriate to your operation.
CHUTE DIRECTION
CONTROL LEVER
1
2
3
5
6
4
1. Chute direction control lever
2. Right
3. Left
4. Chute
5. Clockwise
6. Counterclockwise
Used to change the direction that snow is
blown.
Move the chute direction control lever to
the right:
The chute rotates clockwise.
Move the chute direction control lever to
the left:
The chute rotates counterclockwise.
NOTICE
9Do not press the chute direction
control lever forcefully. Doing so may
damage the switch.
9When the chute is locked, do not
continue to press the chute direction
control lever.
If you do so, the motor breaker may
trip or the motor may be damaged.
9Use the chute direction control lever
when the engine is running.
If you use the chute direction control
lever when the engine switch is in the
“ON 7” position and engine is not
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