1970-1973 Ski-Doo Snowmobiles Technical Data Manual, Page 78Get this manual

1973 NORDIC 640ER
SPEEDOMETER TACHOMETER-'GAS GAUGE-" YLGR

MAGNETO GENERATOR

(J1PILOT

IGNITION COIL P.T.OIGNITION COIL ,'_ _"""'!""_I MAG

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives