Yamaha MX250 2016 User manual

7VE-F8199-70LIT-19626-02-45
MX250
MX300
MX360
MX400
OWNER’S MANUAL
Read this manual carefully before
operating this machine.
7VE-F8199-70LIT-19626-02-45
MX250
MX300
MX360
MX400
MANUEL DU PROPRIÉTAIRE
Il convient de lire attentivement ce
manuel avant la première utilisation de
la machine.
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Cover page 2
Read this manual carefully before operating this machine. This manual should
stay with this machine if it is sold.
Couvercle page 2
L’échappement du moteur de
ce produit contient
des produits chimiques reconnus par l’État de
Californie comme pouvant causer des cancers, des
anomalies congénitales ou des troubles de la
reproduction.
Il convient de lire attentivement ce manuel avant la première utilisation de la
machine. Le manuel doit être remis avec la machine en cas de vente de ce dernier.
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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 main-
tenance of this machine.
If you have any questions regarding the operation or maintenance of your machine,
please consult a Yamaha dealer.
TIP
• Yamaha continually seeks advancements in product design and quality.
Therefore, while this manual contains the most current product information available at
the time of printing, there may be minor discrepancies between your machine and this
manual. If there is any question concerning this manual, please consult a Yamaha
dealer.
• This manual should be considered a permanent part of this machine and should
remain with this machine when resold.
* Product and specifications are subject to change without notice.
PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELY BEFORE OPER-
ATING THE MACHINE.
WARNING
MX250, MX300, MX360, MX400
OWNER’S MANUAL
©2016 by Yamaha Motor Powered
Products Co., Ltd.
1st Edition, November 2016
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Powered
Products Co., Ltd.
is expressly prohibited.
Printed in China
P/N LIT-19626-02-45
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Important manual information
Particularly important information is distinguished in this manual by the following nota-
tions.
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.
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid damage to the
machine or other property.
A TIP provides key information to make procedures easier or clearer.
WARNING
NOTICE
TIP
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Contents
Safety information.................... 1
General safety information .................. 1
Exhaust fumes are poisonous............. 1
Fuel is highly flammable and
poisonous............................................ 1
Engine and muffler may be hot ........... 2
Electric shock prevention .................... 3
Accidental engine start prevention ...... 4
Rotating parts...................................... 4
Location of important labels ................ 5
Controls and features .............. 6
Description .......................................... 6
General view (Manual starting
models) ............................................ 6
General view (Electric starting
models) ............................................ 7
Control function................................... 8
Engine switch................................... 8
Oil warning light (Red) ..................... 8
Fuel tank cap ................................... 9
Fuel cock lever................................. 9
Recoil starter.................................... 9
Choke lever.................................... 10
Throttle lever.................................. 10
Before operation..................... 11
Preparation........................................ 11
Fuel................................................ 11
Engine oil ....................................... 12
Connecting the battery
(For electric starting models) ......... 13
Pre-operation check .......................... 13
Pre-operation check....................... 14
Operation................................. 15
Precautions for use ........................... 15
Starting the engine ............................ 15
Manual starting models.................. 15
Electric starting models.................. 16
Stopping the engine .......................... 18
High altitude operation ...................... 19
Periodic maintenance ............ 20
The importance of maintenance ....... 20
Maintenance schedule ...................... 20
Maintenance chart ......................... 20
Spark plug inspection........................ 22
Carburetor adjustment ...................... 23
Engine oil replacement ..................... 23
Air filter/foam element ....................... 24
Spark arrester ................................... 26
Fuel cock........................................... 27
Fuel tank filter ................................... 28
Fuse replacement (For electric
starting models) ................................ 28
Storage .................................... 30
Drain the fuel..................................... 30
Engine............................................... 32
Troubleshooting ..................... 33
Engine won’t start ............................. 33
Manual starting models ................. 33
Electric starting models ................. 35
Specifications ......................... 39
MX250............................................... 39
MX300............................................... 40
MX360............................................... 41
MX400............................................... 42
Consumer information ........... 43
Machine identification ....................... 43
Identification number records............ 43
Exhaust emission control
system and components ....... 44
Index ........................................ 45
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1
Safety information
General safety information
• Do not allow children to operate the multi-purpose
engine.
• Do not place any obstacles on the multi-purpose
engine.
• Do not sit or stand on the multi-purpose engine.
Exhaust fumes are poisonous
• Using a multi-purpose engine indoors CAN KILL
YOU IN MINUTES. Multi-purpose engine exhaust
contains carbon monoxide. This is a poison you can-
not see or smell.
• NEVER use inside a home or garage, EVEN IF
doors and windows are open.
• Only use OUTSIDE and far away from windows,
doors, and vents.
Fuel is highly flammable and poison-
ous
• Always turn off the engine when refuelling.
• Never refuel while smoking or in the vicinity of an
open flame.
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2
Safety information
• Take care not to spill any fuel on the engine or muf-
fler when refueling.
• Do not leave the multi-purpose engine inside the
vehicle or in the trunk.
• If you swallow any fuel, inhale fuel vapor, or allow any
to get in your eye(s), see your doctor immediately. If
any fuel spills on your skin or clothing, immediately
wash with soap and water and change your clothes.
• When refueling, do not place the fuel tank cap near
the muffler.
• When operating or transporting the machine, be sure
it is kept upright. If it tilts, fuel may leak from the car-
buretor or fuel tank.
Engine and muffler may be hot
• Place the machine in a place where pedestrians or
children are not likely to touch the machine.
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3
Safety information
• Avoid placing any flammable materials near the
exhaust outlet during operation.
• In order to prevent overheating, ensure adequate air-
flow by keeping the machine at least 1 m (3 ft) from
objects or other equipment.
• Do not operate the engine with a dust cover or other
objects covering it.
• When covering the multi-purpose engine, be sure to
do so only after the engine and muffler have com-
pletely cooled down.
Electric shock prevention
• Never operate the engine in rain or snow.
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4
Safety information
• Never touch the machine with wet hands or electrical
shock will occur.
Accidental engine start prevention
• To prevent the engine from accidentally starting, be
sure to stop the engine and remove the spark plug
caps before doing any service.
Rotating parts
• Keep hands, feet, hair and clothing away from the
rotating parts.
• Never operate the multi-purpose engine without
shroud, covers or guards.
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5
Safety information
Location of important labels
Please read the following labels carefully before operating this machine.
TIP
Maintain or replace safety and instruction labels, as necessary.
1
24
3
LISEZ LE MANUEL DU PROPRIÉTAIRE ET TOUTES LES
ÉTIQUETTES AVANT L'UTILISATION.
NE FAITES FONCTIONNER QUE DANS DES LIEUX BIEN AÉRÉS.
LES GAZ D'ÉCHAPPEMENT CONTIENNENT DU MONOXYDE DE
CARBONE NOCIF.
VÉRIFIEZ QU'IL N'Y A PAS DE FUITES DE CARBURANT OU DE
CARBURANT RENVERSÉ.
ARRÊTEZ LE MOTEUR AVANT DE FAIRE LE PLEIN.
NE PAS UTILISER PRÈS DE MATÉRIAUX INFLAMMABLES.
GARDEZ L'APPAREIL AU SEC ENTOUTES CIRCONSTANCES.
7CN-F4162-60
1
2
34
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6
Controls and features
Description
General view (Manual starting models)
1 Fuel tank cap 9 Oil warning light (Red)
2 Air filter case cover 10 Engine switch
3 Carburetor 11 Recoil starter handle
4 Oil drain bolt 12 Throttle lever
5 Oil filler cap 13 Fuel cock cup
6 Spark plug 14 Fuel cock lever
7 Muffler 15 Choke lever
8 Fuel tank 16 Fuel tank filter
8
7
6
54
3
2
116
15
14
13
12
11
9
10
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7
Controls and features
General view (Electric starting models)
1 Fuel tank cap 9 Oil warning light (Red)
2 Air filter case cover 10 Engine switch
3 Carburetor 11 Recoil starter handle
4 Oil drain bolt 12 Throttle lever
5 Oil filler cap 13 Fuel cock cup
6 Spark plug 14 Fuel cock lever
7 Muffler 15 Choke lever
8 Fuel tank 16 Fuel tank filter
8
7
6
54
3
2
116
15
14
13
12
11
9
10
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8
Controls and features
Control function
Engine switch
The engine switch controls the ignition system.
Ignition circuit is switched on.
The engine can be started.
Ignition circuit is switched off.
The engine will not run.
Starting circuit is switched on.
The starter motor starts and the engine can be started.
After starting the engine, take your hand off the switch
immediately.
Oil warning light (Red)
When the oil level falls below the lower level, the oil
warning light comes on and then the engine stops
automatically. Unless you refill with oil, the engine will
not start again.
TIP
(Manual starting models)
If the engine stalls or does not start, turn the engine
switch to “ ” (ON) and then pull the recoil starter. If the
oil warning light flickers for a few seconds, the engine
oil is insufficient. Add oil and restart.
(Electric starting models)
If the engine stalls or does not start, turn the engine
switch to “ ” (START). If the oil warning light comes
on, the engine oil is insufficient. Add oil and restart.
2
1
1
23
1. “ ” (ON)/“ ” (ON)
2. “ ” (OFF)/“ ” (STOP)
3. “”(START)
AManual starting models
BElectric starting models
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9
Controls and features
Fuel tank cap
Remove the fuel tank cap by turning it counterclock-
wise.
Fuel cock lever
The fuel cock supplies fuel from the fuel tank to the car-
buretor.
The fuel cock has two positions.
With the lever in this position, fuel flows to the carbure-
tor. Normal using is done with the lever in this position.
With the lever in this position, fuel will not flow. Always
turn the lever to this position when the engine is not
running.
Recoil starter
The recoil starter is used to start the engine.
Pull the recoil starter slowly until it is engaged, then pull
it briskly.
TIP
Pull the recoil starter handle after turning the engine
switch to “ ” (ON)/“ ” (ON).
1
22
1. ON
2. OFF
1
1. Recoil starter handle
• Pull the recoil starter handle straight.
• Return the recoil starter handle slowly.
• Do not touch the recoil starter handle while the
multi-purpose engine is operating.
NOTICE
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10
Controls and features
Choke lever
Starting a cold engine requires a richer air-fuel mixture,
which is supplied by the choke lever.
TIP
Functions and specification differs depending on the
models.
Throttle lever
Throttle lever controls the engine speed.
Lever position to idle the engine.
Decrease engine speed.
Increase engine speed.
701-033
1
1. Choke lever
12
1. “”
2. “”
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11
Before operation
Preparation
Fuel
1. Stop the engine.
2. Place the multi-purpose engine on a level surface.
3. Remove the fuel tank cap.
4. Check the fuel level.
5. If low, fill the tank with fuel. Do not fill past the bot-
tom of the fuel filler as fuel may mix with the acti-
vated charcoal in the fuel tank cap and overflow.
TIP
If filled beyond the bottom of the fuel filler, fuel may mix
with the active charcoal located within the fuel tank cap
and soil the surrounding areas.
• Fuel is highly flammable and poisonous.
Check “Safety information” (See page 1) care-
fully before filling.
• Carefully fill the fuel tank in order to avoid fuel
from spilling out of the fuel tank.
• Stop filling when the fuel reaches the bottom of
the fuel filler, otherwise it may overflow when the
fuel warms up and expands.
• Wipe up any spilled fuel immediately.
• After filling the tank with fuel, make sure the fuel
tank cap is tightened securely.
WARNING
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12
Before operation
Your Yamaha engine has been designed to use regular
unleaded gasoline with a pump octane number ((R +
M)/2) of 86 or higher, or research octane number of 91
or higher.
Engine oil
1. Place the multi-purpose engine on a level surface.
2. Remove the oil filler cap.
12 3
1. Correct fuel level
2. Fuel tank filter
3. Bottom of fuel filler
• Immediately wipe off spilled fuel with a clean,
dry, soft cloth, since fuel may deteriorate painted
surfaces or plastic parts.
• Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts.
Recommended fuel:
Unleaded gasoline
Fuel tank capacity:
Total:
MX250 5.5 L (1.45 US gal, 1.21 Imp gal)
MX300 5.5 L (1.45 US gal, 1.21 Imp gal)
MX360 6.1 L (1.61 US gal, 1.34 Imp gal)
MX400 6.1 L (1.61 US gal, 1.34 Imp gal)
NOTICE
The multi-purpose engine has been shipped with-
out engine oil. Do not start the engine until you
have filled it with the sufficient engine oil.
NOTICE
1
1. Oil filler cap
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13
Before operation
3. Fill the specified amount of the recommended
engine oil.
4. Check the oil level of the oil filler hole.
5. Install the oil filler cap.
Connecting the battery
(For electric starting models)
Recommended battery capacity is 12 V/26 Ah or more.
Use battery lead wires with cross section of at least 8
mm (0.31 in) square.
Pre-operation check
0 10 30 50 70 90 110130 °F
-20 -10 0 10 20 30 40 50 °C
SAE 10W-40
SAE 10W-30
Be sure no foreign material enters the crankcase.
Recommended engine oil:
Recommended oil brand:
YAMALUBE
Available oil grade:
API SE type or higher
JASO MA or MB
Available viscosity index:
10W-30 or 10W-40
Engine oil quantity:
MX250/MX300 1.0 L (1.06 US qt, 0.88 Imp qt)
MX360/MX400 1.1 L (1.16 US qt, 0.97 Imp qt)
NOTICE
1
1. Correct level
12
1. Connect the battery positive terminal to the starter
switch.
2. Ground the battery negative terminal to the engine
mounting bolt.
If any item in the pre-operation check is not work-
ing properly, have it inspected and repaired before
operating the multi-purpose engine.
WARNING
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14
Before operation
The condition of a multi-purpose engine is the owner’s
responsibility. Vital components can start to deteriorate
quickly and unexpectedly, even if the multi-purpose
engine is unused.
TIP
Pre-operation checks should be made each time the
multi-purpose engine is used.
Pre-operation check
• Fuel
- Check fuel level in fuel tank.
- Refuel if necessary.
(See page 11 for more details.)
• Fuel line
- Check fuel hose for crack or damage.
- Replace if necessary.
•Engineoil
- Check oil level in engine.
- If necessary, add recommended oil to correct level.
- Check multi-purpose engine for oil leakage.
(See page 12 for more details.)
• The point where abnormality was recognized by
use
- Check operation.
- If necessary, consult a Yamaha dealer.
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15
Operation
Precautions for use
Starting the engine
Manual starting models
1. Turn the fuel cock lever to ON.
2. Turn the choke lever to “ ”.
TIP
The choke is not required to start a warm engine.
When starting the warm engine, put the choke lever to
the original position.
3. Move the throttle lever slightly in the arrow direc-
tion.
Never operate the engine in a closed area or it may
cause unconsciousness and death within a short
time. Operate the engine in a well ventilated area.
The multi-purpose engine was shipped from the
factory without engine oil. Do not start the engine
for the first time until the oil level has been checked
and oil added if necessary.
WARNING
NOTICE
1
1. ON
701-033
1
1. Choke lever
1
1. Throttle lever
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