Troy-Bilt Horse Tiller Technical Manual - Page 6

PTO HORSE MODEL TECHNICAL MANUAL Page 2-2 4/90 SECTION 2: Transmission Troubleshooting Wheel Speed Shifting Problems Symptom Wheel Speed Lever drops out of fast speed. Wheel Speed Lever hard to shift. Wheel Speed Lever moves into slow speed but not into fast. Wheel Speed Lever moves freely but the transmission does not shift out of or into fast or slow speed. Remedy • Check the tension on on the Wheel Speed Lever's castle nut. See "Tightening the Castle Nut On the Wheel Speed Lever" in Section 7 of this manual. • Inspect the Wheel Speed Lever: ■ Lubricate the Wheel Speed Lever linkage where the connecting rod joins the shift lever and the connecting rod swivel. ■ The connecting rod at the bottom of the lever may be backwards or bent in towards the transmission and hitting it. ■ Lubricate the washers and castle nut on the pivot point of the lever. ■ Check the tension on the Wheel Speed Lever's castle nut. See "Tightening the Castle Nut On the Wheel Speed Lever" in Section 7 of this manual. • Check if the clutch is binding on the wheel shaft. See "Testing for a Bubbled Wheel Shaft" in Section 7 of this manual. • Check if the clutch is binding on the wheel shaft. See "Testing for a Bubbled Wheel Shaft" in Section 7 of this manual. • Disconnect the shift linkage from the eccentric lever and try moving the eccentric lever by hand. If the lever rotates 360 degrees around the eccentric shaft, the spirol pin that connects the lever and the shaft is broken or missing. Replace the spirol pin. If the lever and the shaft together rotate 360 degrees, the shaft is broken and must be replaced. (Although rare, the eccentric shifting pin could be broken or missing, which would also result in the lever and shaft being able to rotate a full 360 degrees.)