Air Filter Cleaning – Replacement Guide for 1979 Suzuki RM100

Shop parts for a 1979 Suzuki RM100 Dirt Bike.

The 1979 Suzuki RM100 stands out among classic motocross bikes with its unique combination of lightweight frame and snappy two-stroke engine. One crucial aspect of owning and maintaining a vintage RM100 is keeping the air filter in top condition to ensure optimum engine performance and longevity. Air filter maintenance on this specific model is straightforward, but there are some specifics owners should be aware of due to the RM100's design and legacy.

About the 1979 Suzuki RM100 Air Filter Setup

The RM100 uses a traditional foam air filter that sits within the original factory air box. This design is efficient for durability and easy access but requires regular cleaning due to the high dust intake in off-road conditions. The filter is designed to fit securely in the factory air box for optimal sealing and filtration efficiency.

Notably, Suzuki's engineering ensures the air box and filter setup is similar to other Suzie motocross bikes of the era, making filter replacement a familiar task for vintage bike enthusiasts.

Cleaning Your 1979 RM100 Air Filter

  • Remove the seat using the OEM fasteners.
  • Unscrew or unclip the air box cover to access the foam air filter.
  • Gently take out the filter, noting its position for reinstallation.
  • Tap the filter lightly to remove large dirt particles.
  • Wash the foam element in a bucket of warm water with mild soap. Squeeze gently to avoid tearing – do not wring the foam.
  • Rinse thoroughly several times, then allow to air dry completely.
  • Once dry, saturate it with foam air filter oil, working it evenly through the filter. Excess oil should be squeezed out – do not leave puddles.
  • Wipe the inside of the air box clean.
  • Install the oiled filter back into its correct position, ensuring the sealing edges are properly seated to prevent dirt bypass.
  • Replace the air box cover and seat.

When to Replace the Air Filter

  • If the foam is torn, excessively hard, or cannot be cleaned, replacement is necessary. Filters for the 1979 RM100 are designed to exact factory dimensions for a precise fit.
  • Regular replacement prevents dirt from reaching the carburetor and engine, so inspect the filter after every ride, particularly in dry or dusty conditions.

Special Notes for 1979 RM100 Owners

  • The RM100's high-revving engine and motocross heritage mean it draws significant air volume – never run the bike without a properly oiled air filter.
  • Vintage Suzuki RM models commonly share air box characteristics, making aftermarket and OEM replacement filters widely compatible with this model.
  • Periodic air box inspections are vital for identifying cracks or warps in the plastic – these issues can compromise the air filter seal and expose the engine to dirt.
  • The 1979 RM100's distinct power delivery and torque curve demand top filtration performance to avoid engine scoring and loss of compression.

Summary

Keeping your 1979 Suzuki RM100's air filter clean and in good condition is essential to get the most from this classic motocross machine. Frequent maintenance, genuine or compatible filter replacement, and attention to proper sealing will keep your RM100 running strong, whether on the track or trails.

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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.