Toro 20330 Service Manual - Page 27

WORM DRIVE TRANSMISSION 5. If the bearing in the cover is being replaced, use tool P/N 27-0490 to press it in place. This bearing only has one seal. Install the bearing such that the seal is visible from the top of the cover and the open side faces the gears. Press the bearing in until it is fully seated in the case (Fig. 019). 9. Fill the transmission with gear oil AFTER it is installed in the mower. The top of this transmission is not sealed. It will leak if tipped on its side (Fig. 020). A A B A. Tool P/N 27-0490 Fig 019 3428-0159 A. Fill/Check Controls Fig 020 B. Plug 3428-0166 6. Install worm shaft in bearing. 7. Use a new gasket. Install the cover on the bottom case and start the 4 self-tapping screws. Do not fully tighten them. 8. Install the front and rear roll pins to align the cover and case. Then secure the 4 self-tapping screws. There are two control cables used with this system. One cable operates the engine kill switch and flywheel brake; the other controls the transmission. WPM Drive Systems Manual 1-9