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3. Inspect the new filter(s) for damage by looking into
the filter while shining a bright light on the outside of
the filter.
Note: Holes in the filter will appear as bright spots.
Inspect the element for tears, an oily film, or damage to
the rubber seal. If the filter is damaged do not use it.
4. If you are replacing the safety filter, carefully slide the
new filter into the filter body (Figure 30).
Important: To prevent engine damage, always
operate the engine with both air filters and cover
installed.
5. Carefully slide the primary filter over the safety filter
(Figure 30).
Important: Do not press on the soft inside area
of the filter.
Note: Ensure that it is fully seated by pushing on the
outer rim of the filter while installing it.
6. Install the air cleaner cover with the dust cap oriented
as shown in Figure 30 and secure the latches.
Servicing the Engine Oil
Service Interval: After the first 8 hours—Change the engine
oil.
Before each use or daily—Check the engine oil level.
Every 100 hours—Change the engine oil.
Every 200 hours—Change the oil filter.
Note: Change the oil more frequently when the operating
conditions are extremely dusty or sandy.
Oil Type: Detergent oil (API service SF, SG, SH, or SJ)
Crankcase Capacity: 1.7 liter (58 ounces) with the filter
removed; 1.5 liter (51 ounces) without the filter removed
Viscosity: Refer to the table (Figure 31).
Figure 31
Checking the Engine-Oil Level
1. Park the machine on a level surface.
2. Lower the grinder.
3. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
4. Clean around the oil dipstick (Figure 32) so that dirt
cannot fall into the filler hole and damage the engine.
1. Oil dipstick
5. Unscrew the oil dipstick and wipe the end clean (Figure
32).
6. Slide the oil dipstick fully into the filler tube, but do not
thread onto tube (Figure 32).
7. Pull the dipstick out and look at the end. If the oil level
is low, slowly pour only enough oil into the filler tube
to raise the level to the Full mark.
Important: Do not overfill the crankcase with oil
and run the engine; engine damage can result.
Changing the Oil
1. Start the engine and let it run 5 minutes.
Note: 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 ensure that the oil drains
completely.
3. Lower the grinder.
4. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
5. Place a pan below the drain hose. Rotate the oil drain
valve to allow oil to drain (Figure 33).
24
Figure 32
2. Filler tube
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