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Servicing the Engine Oil
Oil Type: Detergent oil (API service SG, SH, SJ, SL
or higher)
Crankcase Capacity:
• 48 oz./1-1/2 qt. (1400 cc/1.4 l) when the filter is
not changed;
• 56 oz./1-3/4 qt. (1700 cc/1.7 l) when the filter is
changed (Model 74433 only)
Viscosity: See the table below.
Checking the Oil Level
Service Interval: Before each use or daily—Check the
engine oil level.
1. Park the machine on a level surface, disengage the
blade control switch, stop the engine, and remove
the key.
2. Clean around the oil dipstick (Figure 34) so that dirt
cannot fall into the fill hole and damage the engine.
1. Oil dipstick
2. Filler tube
3. Unscrew the oil dipstick and wipe the end clean
(Figure 35).
Figure 33
Figure 34
3. Oil drain valve
1. Oil dipstick
4. Screw the oil dipstick fully onto the fill hole.
Unscrew the dipstick, pull it out, and look at the end.
If the oil level is low, slowly pour only enough oil
into the fill hole to raise the level to, but not over, the
Full mark on the dipstick.
Important: Do not overfill the crankcase with
oil because the engine may be damaged.
Changing the Oil
Service Interval: After the first 5 hours—Change the
engine oil.
Every 50 hours—Change the engine
oil.
Every 25 hours—Change the engine
oil (when operating under heavy load
or in high ambient temperatures).
1. Start the engine and let it run until warm. This
warms the oil so it drains better.
2. Park the machine so that the drain side is slightly
lower than the opposite side to assure the oil drains
completely.
3. Disengage the blade control switch and set the
parking brake.
4. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
5. Remove the engine hood to access the oil drain valve.
6. Place a pan below the drain hose. Open oil drain
valve to allow oil to drain (Figure 36).
28
Figure 35
2. Metal end
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