Engine Oil Filter Change; Transaxle - Bush Hog TH420 Operator's Manual

Engine Oil and Filter Change
HOT OIL CAN CAUSE SERIOUS BURNS. DO NOT
ALLOW OIL TO COME INTO CONTACT WITH SKIN.
1. Run the engine two or three minutes until warm. Stop the engine.
2. Clean the area around the drain plug at the bottom of the
crankcase.
3. Place a drain pan beneath the engine and remove the drain plug.
Allow the oil to drain completely.
4. Clean drain hole and replace the drain plug. Torque to 14 ft. lbs.
5. Remove the oil filter and clean the sealing surface area.
6. Lubricate the new filter 0-ring with clean engine oil.
7. Install the new filter and turn by hand until filter gasket contacts
the sealing surface, then turn an additional 1/2 turn.
8. Remove the dipstick and fill the engine with approximately 1-1/2
quarts of SAE 10W-30, API SJ motor oil. Replace the dipstick.
9. Start the engine and check for leaks at the drain plug and oil filter.
10. Stop the engine and check the oil level on the dipstick.
11. Dispose of used oil and filter properly.

Transaxle

The transaxle oil should be changed every 100 hours.
1. Park the vehicle on a level surface.
2. Remove the drain plug from the transaxle and let oil drain into a
drain pan. Dispose of used oil properly.
3. Clean drain hole and replace the drain plug.
4. Refill transaxle with Mobilube HD LS 80W-90 (or equivalent) to
the middle of sight window. If the transaxle does not have a sight
window, refill to top of check plug.
CAUTION
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