2007 Yamaha RS90K, RS90RK, RSG90K, RS90MK, RST90K, RST90TFK Snowmobile Service Manual

Shop manual for Yamaha RS90K, RS90RK, RSG90K, RS90MK, RST90K, RST90TFK snowmobiles: engine, power train, chassis, cooling system, and electrical components.

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Document Details

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Document Number / Seller:
30673 / Christopher Harris
File Size:
25.09 MB
File Type:
PDF
Language:
English
Printable:
Yes
Category:
Snowmobile
Last updated / verified
Aug 3, 2025

Models Covered & Key Technical Specifications

Essential Service Assembly Manual: Yamaha RS90K, RS90RK, RSG90K, RS90MK, RST90K, RST90TFK Snowmobile Service Manual - 2007 Edition Library-Master

Official Yamaha RS90K, RS90RK, RSG90K, RS90MK, RST90K, RST90TFK Snowmobile Service Manual - 2007 Edition | Original Vault Portfolio.

  • Authorized Tension Specs: 13.5 ~ 16.5 mm specifies the primary sheave offset.

Professional Workshop Service Manual & Technical Specifications

Essential Service Assembly Manual: Yamaha RS90K, RS90RK, RSG90K, RS90MK, RST90K, RST90TFK Snowmobile Service Manual - 2007 Edition Library-Master

Operational-Framework: RS90/RS90R/RSG90/RS90M/RST90/RST90TF Snowmobile Service Manual - 2007 Edition // Operational-Scope: Service Manual / Snowmobile Logic // Operational-Framework: Essential Service Assembly.

Performance-Element Parameters Validation-Data
Clutch Specs Primary Sheave Spring Free Length 87.4 mm (3.44 in) CCW
Clutch Specs Spring Seat Nut Torque 23 Nm (2.3 m·kg, 17 ft·lb) CCW
Clutch Specs Secondary Sheave Free Play 1.0 ~ 2.0 mm (0.04 ~ 0.08 in) CCW
Clutch Specs Primary Sheave Offset 13.5 ~ 16.5 mm (0.53 ~ 0.65 in) CCW
Clutch Specs Drive V-Belt Position -0.5 ~ 1.5 mm (-0.02 ~ 0.06 in) CCW
Clutch Specs Drive V-Belt Width 34.5 mm (1.36 in) CCW

Reference chapters include:

  • Power Train
  • Chassis
  • Engine
  • Carburetion
  • Electrical

Procedures are documented for...

Systematically requiring... adjustments are normally not required, but may sometimes be necessary, depending on temperatures, altitude or both. Mid-range speed and high speed tuning (from 1/4 to full-throttle) can be done by adjusting the main jet.

Specifications are provided for...

These specifications are subject to change. Consult the latest technical information from Yamaha to be sure you have the most up-to-date jetting specifications. Mid-range speed and high speed tuning (from 1/4 to full-throttle) can be done by adjusting the main jet.

Systems are described for...

Properly installing the rubber seal onto the drive chain housing, making sure that there are no gaps. Adjusting the tension adjuster on the slide rail suspension. Adjusting the stopper band length on the rear suspension.

The engine manual documents torque specifications for primary sheave bolts to ensure proper bearing preload accuracy.

Troubleshooting guides are provided for...

Troubleshooting common issues like poor idling, air leaks, and abnormal combustion. This Reliable manual aids in identifying and resolving problems efficiently.

FAQ

Confirm the **recommended** diagnostic procedures for the ignition system? keyboard_arrow_down

10 Nm is specified for ignition coil bolts to ensure proper ignition system operation.

What tools **calibrated** fluid capacity requirements are needed? keyboard_arrow_down

4.8 L (4.22 Imp qt, 5.07 US qt) is the total coolant amount for the RS90/RS90R/RSG90 models.

Identify the **applicable** component identification for the primary sheave spring? keyboard_arrow_down

87.4 mm (3.44 in) is the standard free length for the RS90/RS90R primary sheave spring.

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Reviews (3)

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This manual has been a lifesaver for my RS90 snowmobile! The step-by-step instructions are clear, and the diagrams make everything easy to follow. Plus, the download process was seamless, and they responded quickly to my questions. Highly recommend!
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I love this manual! It covers everything I need to maintain my Yamaha. The troubleshooting tips are particularly helpful. I also appreciated the quick email support when I needed clarification on a section. Fantastic service!
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Rated 5 out of 5 stars