Service manual
Table Of Contents
- Inroduction
- Yamaha Motor Corporation, USA YZ/WR Motorcycle Limited Warranty
- How to use this Manual
- Index
- Contents
- Chapter 1 General Information
- Chapter 2 Specifications
- Chapter 3 Regular Inspection and Adjustments
- Chapter 4 Engine
- Seat, Fuel Tank and Side Covers
- Exhaust Pipe and Silencer
- Radiator
- Carburetor and Reed Valve
- Cylinder Head, Cylinder and Piston
- Clutch and Primary Driven Gear
- Kick Axle, Shift Shaft and Primary Drive Gear
- YPVS Govenor
- Water Pump
- CDI Magneto
- Engine Removal
- Crankcase and Crankshaft
- Transmission, Shift Cam and Shift Fork
- Chapter 5 Chassis
- Chapter 6 Electrical
- Chapter 7 Tuning
6-5
ELEC
IGNITION SYSTEM
EC627011
CDI MAGNETO INSPECTION
1. Inspect:
9
Pick-up coil resistance
Out of specification → Replace.
2. Inspect:
9
Source coil 1 resistance
Out of specification → Replace.
Tester (+) lead→White/Red lead 1
Tester (–) lead
→White/Blue lead 2
Pick–up coil Tester selector
resistance position
248~372Ω at
Ω× 100
20°C (68°F)
Tester (+) lead→Black/Red lead 1
Tester (–) lead→Green/White lead 2
Source coil 1 Tester selector
resistance position
720~1,080Ω at
Ω× 100
20°C (68°F)
EC62B000
SPARK PLUG CAP INSPECTION
1.Inspect:
9
Spark plug cap
Loose connection → Tighten.
Deteriorated/damaged → Replace.
9
Spark plug cap resistance
Out of specification → Replace.
Tester (+) lead→Spark plug lead terminal 1
Tester (–) lead
→Spark plug terminal 2
Spark plug cap Tester selector
resistance position
4~6kΩ at
kΩ× 1
20°C (68°F)
1C3-28199-10 234 04.5.17, 9:30:15 PM