22
Servicing the Engine Oil
Check the oil level daily or after every 8 hours.
Change the oil after the first 5 operating hours and every 50
operating hours thereafter.
Oil Type: Detergent oil (API service SF, SG, SH, SJ, 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 (Models 74330 and 74350 only)
Viscosity: See the table below.
F
–200 20406080100
°
C
–30
°
–20 –10 0 10 20 30 40
USE THESE SAE VISCOSITY OILS
Checking the Oil Level
1. Park the machine on a level surface, disengage the PTO,
stop the engine, and remove the key.
2. Clean around the oil dipstick (Fig. 18) so that dirt
cannot fall into the fill hole and damage the engine.
1
2
m–6439
3
Figure 18
1. Oil dipstick
2. Filler tube
3. Oil drain valve
3. Unscrew the oil dipstick and wipe the metal end clean
(Fig. 19).
1
2
1868
Figure 19
1. Oil dipstick 2. Metal end
4. Screw the oil dipstick fully onto the fill hole. Unscrew
the dipstick, pull it out, and look at the metal 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 and Draining the Oil
1. Start the engine and let it run five minutes. 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.
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