* Worn clutch plates: The clutch plates are responsible for connecting the engine to the transmission. When they are worn, they can slip, making it difficult to engage first gear.
* Bent shift forks: The shift forks are responsible for moving the gears in the transmission. If they are bent, they can prevent the transmission from shifting properly.
* Low transmission fluid: The transmission fluid lubricates the gears and helps them shift smoothly. If the transmission fluid is low, it can cause the gears to grind, making it difficult to shift into first gear.
* Bad shift linkage: The shift linkage is responsible for connecting the shift lever to the transmission. If the shift linkage is worn or damaged, it can make it difficult to shift into first gear.
* Bad shift drum: The shift drum is responsible for rotating the gears in the transmission. If the shift drum is worn or damaged, it can make it difficult to shift into first gear.
If you are experiencing difficulty getting your 1980 Yamaha XS 850 into first gear, it is important to have the motorcycle inspected by a qualified mechanic. They will be able to diagnose the problem and recommend the appropriate repairs.
