Scag Power Equipment STT61V-27KA Manuel D’Utilisation

R

Park the mower on a level surface and stop the 

1. 

engine.

Place a suitable container under the hydraulic oil 

2. 

filter. Remove the fill cap from the reservoir and the 
drain plug from the bottom of the drain tee fitting on 
the filter base. See Figure 7-3. Allow the fluid to drain 
into the container and properly discard it.

390S0155-1

HYDRAULIC
OIL FILTER

Re-install the drain plug into the tee fitting and be 

3. 

sure it is tight.

Fill the reservoir to 3-1/4" inches from the top of the 

4. 

filler neck with 20W50 motor oil.

Replace the reservoir fill cap. Start the engine and 

5. 

drive forward and backward for two minutes. Check 
the oil level in the reservoir. If necessary, add oil to 
the reservoir.

The hydraulic oil level should be checked after the first 10 
hours of operation. Thereafter, check the oil after every 
200 hours of machine operation or monthly, whichever 
occurs first.

Wipe dirt and contaminants from around the 

1. 

reservoir cap. Remove the cap from the hydraulic oil 
reservoir.

Visually check the level of hydraulic oil. Hydraulic 

2. 

oil must be at least 3" inches from top of the filler 
neck. If the level cannot be determined visually, 
use a clean tape measure to check the level. If the 
fluid is low, add 20W50 motor oil. DO NOT overfill; 
(overfilling the oil reservoir may cause oil seepage 
around the cap area).

Clean the fill cap and install it onto the reservoir.

3. 

Hydraulic Oil
Reservoir

STT99HOR-1

The hydraulic oil should be changed after every 500 hours 
or annually, whichever occurs first. The oil should also 
be changed if the color of the fluid has become black or 
milky. A black color and/or a rancid odor usually indicates 
possible overheating of the oil, and a milky color usually 
indicates water in the hydraulic oil.