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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
LUBRICATION - TRACTORS
Proper lubrication is an important maintenance proce-
dure. It reduces wear and makes the machine quieter
and easier to operate.
Engine Oil - All Models
Engine Break-In Oil
Model MW, MC, MT, MTL, MTEFI
No special break-in oil is required. The engine is ser-
viced with 10W-30, Service Class SG oil from the fac-
tory. Change the oil after the initial engine break-in
period of 5 hours. Thereafter, change oil after every
100 hours of operation or more often in extremely
dusty or dirty conditions (200 hour interval for MTL).
Model MD
No special break-in oil is required. The engine is ser-
viced with 10W-30, Service Class SG oil from the fac-
tory. Change the oil after the initial engine break-in
period of 35 hours. Thereafter, change oil after every
100 hours of operation.
Model MS
No special break-in oil is required. The engine is ser-
viced with 10W-30, Service Class SG oil from the fac-
tory. The oil should be changed after the initial engine
break-in period of 8 hours. Thereafter, change oil af-
ter every 50 hours of operation.
Model MB
No special break-in oil is required. The engine is ser-
viced with 10W-30, Service Class SG oil from the fac-
tory. The oil should be changed after the initial engine
break-in period of 5-8 hours. Thereafter, change oil
after every 50 hours of operation.
Checking Engine Crankcase Oil Level - Model MW,
MB, MC, MD, MT, MTL, MTEFI
Model MB, MC, MT, MTL, MTEFI
Check the engine crankcase oil level before use and
after each 8 hours of continuous operation.
Model MW, MD
Check the engine crankcase oil level before use and
after each 5 hours of continuous operation.
Model MW, MB, MC, MD, MT, MTL, MTEFI
IMPORTANT: The importance of checking and main-
taining the proper crankcase oil level cannot be over-
emphasized. Check the oil level BEFORE EACH USE.
1. Park the mower on a level surface with the en-
gine stopped. Also, make sure the engine is cool
and oil has had time to drain into the sump [allow at
least five (5) minutes after stopping the engine].
IMPORTANT: NEVER check or add oil with the
engine running.
2. Before removing the dipstick, clean the area
around the dipstick to keep any dirt or debris out of
the engine.
Model MW, MC, MT, MTL, MTEFI
3. Remove the dipstick, wipe off with a clean rag,
then reinsert the dipstick into the tube without
screwing it in.
Model MB, MD
3. Remove the dipstick, wipe off with a clean rag, then
reinsert the dipstick into the tube and press all the
way down.
Model MW, MB, MC, MD, MT, MTL, MTEFI
4. Remove the dipstick again and check the oil level
on the dipstick. The oil level should be within the
“Operating Range” on the dipstick (between the “L”
mark and the “F” mark).
IMPORTANT: DO NOT operate engine without a
sufficient oil supply in the crankcase. DO NOT op-
erate with the oil level below the “L” mark or above
the “F” mark on the dipstick.
5. If additional oil is needed, refer to Specifications
for proper crankcase lubricant. Fill up to, but not
above, the “F” mark on the dipstick.
WARNING
DO NOT attempt to lubricate the machine
with the engine running. Disengage the
PTO clutch, shut off the machine, and re-
move the ignition key.
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