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My 94 gas ezgo seems to not shift out of low gear. On jack stands both clutches seem to work fine. On the ground it just high revs going down the road like it is stuck in low. Any help would be appreciated.
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First, I’d suggest checking the belt condition as this could be a factor in not shifting out of low. The clutches themselves seem fine on jack stands, but when under load the system’s performance can change. If the belt is slipping it may not be engaging correctly in high gear.
Basically when you press the gas pedal, it activates the drive clutch to engage and push the cart forward. The drive clutch (also called the primary clutch) works by using centrifugal force. As the engine revs up, the primary clutch’s spring and weights push the movable sheave outward, causing the clutch to engage and tighten the belt, which then transmits power to the driven clutch.
The driven clutch (the secondary clutch) is responsible for transferring that power to the rear axle. It should shift smoothly as the belt tension changes. If the drive clutch isn’t engaging fully or if the driven clutch isn’t releasing as it should, the cart could get stuck in a low gear scenario causing high revving and lack of speed like you are experiencing.
The primary clutch (drive clutch) should engage fully when the RPMs climb. If the movable sheave isn’t sliding freely, the clutch won’t activate properly. Similarly, check the driven clutch. It should be fully compressing as the cart reaches higher speeds, if it’s not, the cart won’t shift into high gear. Also, look at the clutch spring tension. A worn or broken spring in either clutch could be the culprit, causing the clutch not to engage or disengage at the proper time.
In some cases, the belt may be the problem too. A stretched or worn belt won’t provide the right tension to allow proper shifting. You could also have worn out sheaves or a buildup of dirt or debris inside the clutch which can cause parts to stick or not move as they should. If you have any questions feel free to ask!
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