Yamaha RS Vector Spark Plugs

The Yamaha RS Vector snowmobile spark plugs are a device for igniting the explosive mixture of air and fuel in an internal combustion engine. The Yamaha RS Vector sled is a liquid-cooled, 4-stroke, DOHC 3-cylinder engine.

Spark plug specifications

Spark plug: Type Manufacture Gap Tightening Torque Number of spark plugs

– NGK R CR8E NGK 0.7 ~ 0.8 mm (0.028 ~ 0.031 in) 13 Nm (1.3 m · kg) 9.4 ft · lb 3

Periodic Maintenance

Spark plug maintenance is the process of keeping the spark plugs in good condition to increase performance, improve fuel economy and extend the life of the motor. The spark plugs must be inspected, adjusted or replaced every season or 3,200 km (2,000 miles) (160 hours), whichever comes first.

Item	Remarks	Time Intervals
Spark plugs	1. Check condition. 2. Clean and adjust gap. 3. Replace if necessary.	Every season or 3,2000 km (2,000 mi) (160 hr)

Spark Plug Service

1. Remove:
   • Take off spark plug caps
   • Remove spark plugs
2. Inspection:
   • Check spark plug electrodes (1)
     
   • A light to medium tan plug insulator color indicates normal conditions
   • Replace worn or damaged plugs
   • Check insulator color (2)
3. Measure:
   • Measure spark plug gap thickness (a)
   • Regap plug if out of specification
   • Use a wire thickness gauge to measure or regap
4. Clean:
   • Clean spark plug if necessary
   • Use a spark plug cleaner when possible
5. Install:
   • Put spark plugs in plug holes
   • Finger-tighten (a) before torquing (b) with a wrench to avoid cross-threading
     
   • Torque to factory specification, refer to spark plug specifications

Troubleshooting Weak or No Spark

WEAK OR NO SPARK
Possible Cause	Remedy
Faulty ignition or main fuse	Replace if necessary
Discharged or faulty battery	Charge and/or replace battery
Measure spark plug gap	Replace or regap spark plug
Inspect the ignition spark gap	Replace the ignition coil if necessary
Test ignition coil resistance	Replace ignition coil if necessary
Check ignition coil resistance	Replace ignition coil if out of specification
Check main switch, motor stop switch or throttle switch	If faulty replace the main switch and or right handlebar switch
Check for a faulty throttle position sensor	Replace if defective
Check ignition system wiring	Reconnect bad connections or repair damaged wiring

This Information is Compatible With The Following Models

Year	Model Name	Marketing Name
2005	RS90K	RS Vector
2005	RS90MK	RS Vector Mountain
2005	RS90RK	RS Vector ER
2005	RSG90K	RS Rage
2005	RST90K	RS Venture
2006	RS90L	Vector
2006	RS90ML	Vector Mountain
2006	RS90RL	Vector ER
2006	RSG90L	Rage
2006	RST90L	RS Venture
2007	RS90MW	Vector Mountain
2007	RS90RW	Vector ER
2007	RSG90W	Rage
2007	RST90W	Venture
2008	RST90XR	RS Venture
2009	RST90YS	RS Venture
2010	RST90ZS	RS Venture

 

References

Yamaha, ‘Factory Service Manual’ (2005-2010). Specifications, Maintenance, Service Procedures, Pg. 18, 20, 356, 373.