Yamaha YFM660 01 User Manual

2 - 19
SPEC
Starter relay
Model/manufacturer MS5F-721/JIDECO ----
Amperage rating 180 A ----
Coil winding resistance 4.18 ~ 4.62 Ω
 at 20 °C (68 °F) ----
Thermostat switch:
Thermostat switch 1
Model/manufacturer 5GH/NIPPON THERMOSTAT ----
Thermostat switch 2
Model/manufacturer 5LP/NIPPON THERMOSTAT ----
Circuit breaker:
Type Fuse ----
Amperage for individual circuit
Fuse 20 A ×
 1 ----
Reserve 20 A ×
 1 ---- Item Standard Limit
MAINTENANCE SPECIFICATIONS 

2 - 20
SPEC
EB201000
HOW TO USE THE CONVERSION 
TABLE
All specification data in this manual are listed
in SI and METRIC UNITS.
Use this table to convert METRIC unit data to
IMPERIAL unit data.
Ex.
CONVERSION TABLE
EB202001
GENERAL TORQUE 
SPECIFICATIONS
This chart specifies torque for standard fasten-
ers with standard I.S.O. pitch threads. Torque
specifications for special components or
assemblies are provided for each chapter of
this manual. To avoid warpage, tighten multi-
fastener assemblies in a...

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SPEC
LUBRICATION POINTS AND LUBRICANT TYPES
ENGINE
Lubrication points Lubricant type
Oil seal lips (all)
LS
O-ring (all)LS
Bearings (all)E
Crank pinE
Connecting rod (bearing)E
Camshaft sprocketM
CrankshaftE
Piston surface/piston ringsE
Piston pinE
Primary drive gear/primary driven gearE
Valve stem/valve stem endM
Rocker arm shaftE
Rocker armM
Camshaft lobe/journalM
Oil pump shaft, rotor, housingE
Oil filter O-ringE
Starter idle gear/shaftE
Transmission gear (wheel/pinion)M
Axle (main/drive)M
Shift...

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SPEC
COOLANT FLOW DIAGRAMS
1Radiator
2Radiator fan
3Radiator outlet hose 
4Water pump inlet hose
5Water pump
6Water jacket outlet pipe
7Thermostat inlet hose
8Thermostat9Radiator inlet hose
0Thermo switch 2
AThermo switch 1
COOLANT FLOW DIAGRAMS 

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SPEC
OIL FLOW DIAGRAMS
1Oil tank
2Oil pipe 2
3Oil pipe 1
OIL FLOW DIAGRAMS 

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SPEC
1Oil delivery pipe 2
2Oil delivery pipe 1
3Oil filter
4Crankshaft
5Oil pump
OIL FLOW DIAGRAMS 

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SPEC
1Oil pipe 2
2Drive axle
3Main axle
4Engine oil drain bolt (engine)
5Oil pipe 1
6Oil strainer
7Shift drum
OIL FLOW DIAGRAMS 

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SPEC
1Oil delivery pipe 2
2Oil filter cartridge
3Oil pump rotor 1
4Oil pump rotor 2
5Oil pipe 1
6Main axle
OIL FLOW DIAGRAMS 

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SPEC
CABLE ROUTING
1Parking brake cable
2Starter cable
3Clutch cable
4Throttle cable
5Front brake hose
6Front brake switch
7Park switchÈFasten the handlebar switch lead, park switch 
lead and clutch switch lead to the handlebar with 
the plastic band.
ÉFasten the front brake switch lead to the handle-
bar with the plastic band.
CABLE ROUTING 

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SPEC
1Front brake hose
2Throttle cable
3Main switch lead
4Indicator light lead
5Clutch cable
6Parking brake cable
7Starter cable
8Coolant reservoir hose
9Wire harness
0Ignition coil lead
AHeadlight lead coupler (left)BBrake pipe
CHeadlight lead coupler (right)
DRadiator fan breather hose
EHeadlight lead (right)
ÈPass the throttle cable through the cable guide.
ÉPass the clutch cable, parking brake cable and 
starter cable through the cable guide.
ÊFasten the left and right headlight lead, radiator...