Drive Belt & V-Belt

The drive components and genuine drive belts and V-belts for all Yamaha and Star models are designed and developed as a complete 'drive system' to provide durability, abrasion resistance, and heat resistance suitable for the engine power and intended use of each model.

The Feature of Parts

Drive Belt

  • Narrow Width and High Strength Attained by Vehicle-specific Design
  • Precise Construction for Strong, Smooth Power Delivery with Reduced Drive Shock


  • Strength and Durability Suitable for Engine Power and Displacement
  • Using Temperature-resistant Rubber

Consisting of a Hybrid Material of Heat-resistant Rubber and Highly Elastic Resin


Periodic Inspections & Maintenance

A loss of performance and fuel efficiency will result if the drive system does not get periodic maintenance according the appropriate Owner's or Service Manual. Lack of maintenance could also result in costly repairs or personal injury if there is some failure with the drive belt, V-belt or drive system.
The Scheduled Maintenance chart in the appropriate Owner's or Service Manual should be used as a guide.

Dust and Dirt Inspection and Cleaning of Drive Belt

Check and clean the drive and pulley so that they are free of dust or dirt. Check as well that no teeth of the drive belt are missing and that the drive belt is free of cracks.

Tension Adjustments to Drive Belt

Drive belt tension is checked using a special tension gauge, and is set with the adjusters on the swing arm. Since this requires special tools, data and technical skills, it is best that a Yamaha dealer perform this service.

Inspection and Cleaning of Air Filter Element on V-belt Case

If the element is clogged, the cooling performance of the belt case will decrease, causing an increase in V-belt wear. Inspect and clean the element according to the Maintenance Schedule in the Owner's or Service Manual.

Table of Items to Regularly Inspect

Refer to the applicable service manual for the inspection and maintenance procedures.

General Periodic MaintenanceDrive belt
Drive belt Check belt tension. Adjust if necessary. Every 4000 km (2500 mi)
*Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
General Periodic MaintenanceV-belt
V-belt case air filter elements Clean.
V-belt Replace. Every 20000 km (12000 mi)
* when the V-belt replacement indicator flashes
*Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.

Problems and Counter-measures

Drive Belt Slack

Loss of driving force or drive belt slippage can result if the drive belt tension is not set correctly. If the drive belt is continuously operated with excessive belt slack, the teeth may be damaged, or be torn loose from the drive belt, causing the belt to slip on the pulleys.
You can avoid these problems by the drive belt tension must be checked, and adjusted if needed, on a regular basis.

Trouble Resulting from Wear and Tear of Belt

The drive belt teeth contact the drive and driven pulleys and will wear during normal use. Excessive wear or damage of the teeth may result in slippage, loss of driving force, and drive belt failure. The teeth may be worn in a very short time if dust or dirt is trapped between the drive belt and pulleys.

The sides of the V-belt contact the clutch sheaves to transfer the driving force and will wear during normal use. As the V-belt wears the width of the V-belt becomes more narrow.
When the belt width becomes too narrow, the belt will not move to the upper part of the sheaves, resulting in a loss of speed or V-belt slippage and clutch sheave damage. These conditions will cause a decrease in driving performance and fuel efficiency.
To prevent these problems, follow the appropriate Owner's Manual Scheduled Maintenance intervals for drive system service and V-belt replacement.

Trouble Resulting from Wear or Damage to the Weight Roller

The weight rollers operate by centrifugal force, squeezing the V-belt between the two primary clutch sheave assemblies to transmit the engine power to the drive line. These roller weights will wear during normal use, and become lighter in weight, changing the engine operating RPM and automatic gear-ratio operation.

Also, these rollers can wear unevenly due to the lack of maintenance or abusive operation. This uneven wear will result very erratic drive system operation and may result in even more costly repairs if not serviced as needed.
It is extremely important the Scheduled Maintenance intervals of the drive system be followed to maintain consistent operation and reduce service costs. It is recommended an authorized Yamaha dealer perform this inspection and service.

Frequently Asked Questions

[Questions About Drive Belt]

Q1: I heard that a drive belt is maintenance-free. Is this true?

A1: Not completely, drive belts require a great deal less maintenance than a drive chain, but the belt tension still needs to be checked and adjusted following the Scheduled Maintenance chart in the Owner's or Service Manual.

Q2: Should I lubricate the drive belt like a drive chain?

A2: No, it is very important to NOT lubricate drive belts. Lubrication will cause the drive belt to slip on the pulleys, causing the belt to fall off or loss in drive transmission power. Furthermore, dust and dirt will stick to the drive belt, and damage the drive belt and pulley.

Q3: What maintenance do I need to prolong the life of the drive belt?

A3: Clean the drive belt and pulley on a regular basis. Check if dust or dirt is trapped between the drive belt and pulley or if there is any damage to the teeth. The drive belt and pulley could be damaged if the vehicle is operated with dust or dirt caught in the teeth.

[Questions About V-Belt]

Q4: Is the V-belt maintenance free?

A4: The V-belt needs periodic replacement. Unlike a toothed drive belts, it does not require belt tension adjustment.

Q5: How do I check for wear and damage of the V-belt?

A5: You cannot visually check normal wear on the V-belt, it must be measured to determine the amount of wear. Refer to the Owner's or Service Manual for the regular replacement interval of the V-belt. The V-belt replacement cycle of a low-displacement vehicle that makes frequent speed changes tends to be shorter than that of a high-displacement vehicle. Depending on the model, a warning light may be provided to alert the user of the time to change the V-belt.

Q6: Does the drive system have other components that wear in normal use other than the V-belt?

A6: Yes, the weight rollers, and V-belt case air filter element also require routine service or replacement.

Q7: Should the V-belt and weight rollers be replaced at the same time?

A7: Normally the weight rollers have a longer service life than the V-belt, but it is best to have the entire drive system checked and serviced by a Yamaha dealer whenever the V-belt needs replacement, or at the Scheduled Maintenance intervals in the Owner's or Service Manual.