CRANKCASE
5-73
EASB291287
DISASSEMBLING THE CRANKCASE
1. Separate:
• Right crankcase
• Left crankcase
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a. Remove the crankcase bolts.
TIP
Loosen each bolt 1/4 of a turn at a time and af-
ter all the bolts are loosened, remove them.
b. Remove the right crankcase “1”.
TIP
• Place the crankcase with its left side down-
ward and split it by inserting a screwdriver tip
into the splitting slit “a” in the crankcase.
• Lift the right crankcase horizontally while light-
ly patting the crankcase splitting slit and the
engine mounting boss using a soft hammer,
and leave the crankshaft and the transmission
with the left crankcase.
ECA
NOTICE
Use soft hammer to tap on the case half.
Tap only on reinforced portions of case. Do
not tap on gasket mating surface. Work
slowly and carefully. Make sure the case
halves separate evenly. If the cases do not
separate, check for a remaining case bolt or
fitting. Do not force.
c. Remove the dowel pins and O-ring.
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EASB291288
REMOVING THE CRANKCASE BEARING
1. Remove:
• Bearing “1”
TIP
• Remove the bearing from the crankcase by
pressing its inner race.
• Do not use the removed bearing.
EASB291289
CHECKING THE TIMING CHAIN, TIMING
CHAIN GUIDE, OIL STRAINER
1. Check:
• Timing chain
Stiffness
Replace the camshaft sprocket,
timing chain and crankshaft sprocket as a
set.
2. Check:
• Timing chain guide
Damage/wear
Replace
EASB291290
CHECKING THE CRANKCASE
1. Wash:
• Crankcase
TIP
• Wash the crankcase in a mild solvent.
• Remove any remaining gasket from the
crankcase mating surface.
2. Check:
• Crankcase
Crack/damage
Replace.
1
a
Содержание YZ 2015 Series
Страница 6: ...EASB291006 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Страница 10: ......
Страница 33: ...CONTROL FUNCTIONS 1 21 a 2...
Страница 65: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 22 EASB291066...
Страница 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25...
Страница 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Страница 71: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 28 1 Exhaust camshaft 2 Intake camshaft 3 Oil filter element 4 Oil pump...
Страница 72: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29...
Страница 73: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 30 1 Camshaft 2 Oil pressure check bolt 3 Oil filter element 4 Oil pump...
Страница 74: ...CABLE ROUTING DIAGRAM 2 31 EASB291068 CABLE ROUTING DIAGRAM...
Страница 76: ...CABLE ROUTING DIAGRAM 2 33...
Страница 78: ...CABLE ROUTING DIAGRAM 2 35...
Страница 80: ...CABLE ROUTING DIAGRAM 2 37...
Страница 82: ...CABLE ROUTING DIAGRAM 2 39...
Страница 84: ...CABLE ROUTING DIAGRAM 2 41...
Страница 86: ...CABLE ROUTING DIAGRAM 2 43...
Страница 88: ...CABLE ROUTING DIAGRAM 2 45...
Страница 128: ...ELECTRICAL SYSTEM 3 38...
Страница 200: ...CHAIN DRIVE 4 70...
Страница 244: ...ELECTRIC STARTER 5 41...
Страница 266: ...OIL PUMP AND BALANCER GEAR 5 63 c d 6 6 7 8 8 b...
Страница 286: ...TRANSMISSION 5 83...
Страница 306: ...CHECKING THE INTAKE AIR TEMPERATURE SENSOR 8 67 CHECKING THE FUEL INJECTOR 8 68...
Страница 319: ...CHARGING SYSTEM 8 13 4 AC magneto 5 Rectifier regulator 8 Battery 9 Frame ground 10 Starter relay 11 Main fuse...
Страница 321: ...CHARGING SYSTEM 8 15 EASB291338...
Страница 325: ...COOLING SYSTEM For JPN 8 19 EASB291341...
Страница 355: ...FUEL PUMP SYSTEM 8 49 EASB291348...
Страница 356: ...ELECTRICAL COMPONENTS 8 50 ELECTRICAL COMPONENTS EASB291349 8 9 10 1 3 2 4 5 6 7...
Страница 358: ...ELECTRICAL COMPONENTS 8 52 11 10 9 2 3 1 6 7 8 4 5...
Страница 360: ...ELECTRICAL COMPONENTS 8 54 EASB291350 CHECKING THE SWITCHES 4 1 3 2 E B S E B E B E E B B...
Страница 361: ...ELECTRICAL COMPONENTS 8 55 1 Engine stop switch 2 Neutral switch 3 Clutch switch 4 Start switch...
Страница 382: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7...