Page 21 of 66

 
INSTRUMENT AND CONTROL FUNCTIONS 
3-5 
2
34
5
6
7
8
9 such as the piston rings as well as to
 
the exhaust system. 
Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
91 or higher. If knocking (or pinging) oc-
curs, use a gasoline of a different brand
or premium unleaded fuel. Use of un-
leaded fuel will extend spark plug life
and reduce maintenance costs. 
EAU13412 
Fuel tank breather hose  
Before operating the motorcycle: 
 
Check the fuel tank breather hose
connection. 
 
Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged. 
 
Make sure that the fuel tank
breather hose is not blocked, and
clean it if necessary. 
EAU13452 
2-stroke engine oil  
Make sure that there is sufficient
2-stroke engine oil in the oil tank. Add
the recommended 2-stroke engine oil
as necessary.
TIP
 
Make sure that the 2-stroke engine oil 
tank cap is properly installed. 
1.  Fuel tank breather hose
1
 
1.  2-stroke engine oil tank cap
2.  Minimum level mark 
Recommended oil:  
See page 8-1.  
Oil quantity:  
0.30 L (0.32 US qt, 0.26 Imp.qt)
21 
     
        
        Page 25 of 66

 
FOR YOUR SAFETY – PRE-OPERATION CHECKS 
4-2 
2
3
45
6
7
8
9
 
EAU15605 
Pre-operation check list  
ITEM CHECKS PAGE
Fuel 
 
Check fuel level in fuel tank. 
 
Refuel if necessary. 
 
Check fuel line for leakage.3-3  
2-stroke engine oil 
 
Check oil level in oil tank. 
 
If necessary, add recommended oil to specified level. 
 
Check vehicle for oil leakage.3-5  
Middle and final gear cases 
 
Check vehicle for grease leakage. 6-8 
Front brake 
 
Check operation. 
 
Lubricate cable if necessary. 
 
Check lever free play. 
 
Adjust if necessary.6-14, 6-15  
Rear brake 
 
Check operation. 
 
Lubricate cable if necessary. 
 
Check lever free play. 
 
Adjust if necessary.6-14, 6-15  
Throttle grip 
 
Make sure that operation is smooth. 
 
Check cable free play. 
 
If necessary, have Yamaha dealer adjust cable free play and lubricate cable 
and grip housing.6-11, 6-16  
Control cables 
 
Make sure that operation is smooth. 
 
Lubricate if necessary.6-15  
Wheels and tires 
 
Check for damage. 
 
Check tire condition and tread depth. 
 
Check air pressure. 
 
Correct if necessary.6-11, 6-13  
Brake levers 
 
Make sure that operation is smooth. 
 
Lubricate lever pivoting points if necessary.6-16  
Centerstand 
 
Make sure that operation is smooth. 
 
Lubricate pivot if necessary.6-17 
     
        
        Page 59 of 66

 
8-1 
2
3
4
5
6
7
89
 
SPECIFICATIONS 
EAU2633P 
Dimensions: 
Overall length: 
1245 mm (49.0 in)
Overall width: 
575 mm (22.6 in)
Overall height: 
715 mm (28.1 in)
Seat height: 
485 mm (19.1 in)
Wheelbase: 
855 mm (33.7 in)
Ground clearance: 
105 mm (4.13 in)
Minimum turning radius: 
1300 mm (51.2 in) 
Weight: 
With oil and fuel: 
39.0 kg (86 lb) 
Noise and vibration level: 
Noise level (77/311/EEC): 
75.1 dB(A) 
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)
Vibration on seat (EN1032, ISO5008): 
Will not exceed 0.5 m/s 
2
 
 
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF)Vibration on handlebar (EN1032, ISO5008): 
Will not exceed 2.5 m/s 
2
 
 
(AUT)(BEL)(CHE)(DEU)(DNK)(ESP)(FIN)
(FRA)(GBR)(GRC)(IRL)(NLD)(NOR)(PRT)
(SWE)(ZAF) 
Engine: 
Engine type: 
Air cooled 2-stroke
Cylinder arrangement: 
Forward-inclined single cylinder
Displacement: 
49.0 cm 
3
 
Bore  
× 
 stroke: 
40.0  
× 
 39.2 mm (1.57  
×  
 1.54 in)
Compression ratio: 
6.00 :1
Starting system: 
Kickstarter
Lubrication system: 
Separate lubrication (Yamaha autolube)
 
Engine oil: 
Type: 
YAMALUBE 2 or 2-stroke engine oil (JASO
FC grade) or (ISO EG-C or EG-D grade) 
Engine oil quantity: 
Quantity: 
0.30 L (0.32 US qt, 0.26 Imp.qt) 
Transmission oil: 
Type: 
YAMALUBE 4 (10W-40) or SAE 10W-40
Oil change quantity: 
0.30 L (0.32 US qt, 0.26 Imp.qt) 
Air filter: 
Air filter element: 
Wet element 
Fuel: 
Recommended fuel: 
Regular unleaded gasoline only 
(AUT)(BEL)(CAN)(CHE)(DEU)(DNK)
(ESP)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)
(NOR)(PRT)(SWE)(ZAF)
Unleaded gasoline only (AUS)(NZL)
Fuel tank capacity: 
2.0 L (0.53 US gal, 0.44 Imp.gal) 
Carburetor: 
Manufacturer: 
MIKUNI
Type   
×  
 quantity: 
VM12SC x 1 
Spark plug (s): 
Manufacturer/model: 
NGK/BP4HS (AUS)(NZL)
NGK/BPR4HS
(AUT)(BEL)(CAN)(CHE)(DEU)(DNK)
(ESP)(FIN)(FRA)(GBR)(GRC)(IRL)(NLD)
(NOR)(PRT)(SWE)(ZAF)
Manufacturer/model: 
DENSO/W14FPL (AUS)(NZL)
Spark plug gap: 
0.6–0.7 mm (0.024–0.028 in) 
Clutch: 
Clutch type: 
Wet, centrifugal automatic