John Deere Model TRS21 Walk Behind Snow Blower Parts John Deere Model TRS21 Walk Behind Snow Blower Parts. John Deere Fuel Filter - AM107314 (23) $2. Usually available. Add to Cart. Quick View. John Deere Fuel Tank - M117930 (0) $74. Usually available. Add to Cart. Quick View. John Deere Fuel-Protect Gasoline Stabilizer - TY27534 (1) $4. John Deere TRS21 Parts - Mutton Power Equipment John Deere TRS21 Snowblower Parts. The TRS21 Walk Behind Snowblower was produced with standard features including the 5 HP Tecumseh engine, 21" bucket, single stage augers, and 190 degree chute adjustment. Regular maintenance should be performed on the TRS21 if it is not operated 25 hours during a season and every 100 hours or yearly.