Wright Serial #49705 and Higher - Manual (Page 16)

15
Hydro Oil Tank Check/Fill
Checking oil
• Ensure mower is on a level surface.
• Lift hinged pad and remove hex socket plug
from oil level port on the back of the tank.
• Hydro oil should be at the bottom of the threads.
Filling oil
• Lift hinged pad and remove hex socket plug.
• Using a funnel, fill tank through oil level port until
oil reaches bottom threads of the port.
Lubrication
Grease with No. 2 general purpose lithium base or
molybdenum base grease.
• Set parking brake, stop the engine and
remove the key.
• Clean grease fittings with a rag.
• Connect grease gun to fitting and pump until
grease begins to ooze out from the
bearings.
• Wipe off excess grease.
• Do not use spray lube of any kind on choke
and/or throttle cables.
Service intervals: First 8 hours
Every 25 hours
Also see Maintenance chart
How to Move the Mower if the Engine
Won’t Start
Rotate both of the hydro bypass valves on the side
of each hydraulic pump about ½ turn
counterclockwise. It is important not to over
tighten these. Damage may occur to the pump if
this valve is over tightened.
Bleeding Air from the Hydraulic System
Whenever servicing the hydraulic system, it is of
the utmost importance to keep any dirt or debris
from getting into the system. Clean off all parts
before disassembly and assembly. When any of
the hydraulic parts are disconnected or removed or
when the oil is changed, air must be bled from the
system. If air is entrained in the system, loss of
power, excessive heat, and damage to the
hydraulic pumps may occur. First, make sure the
oil level in the reservoir is correct. The oil should
be level with the bottom threads of the oil level
port. Use fully synthetic oil: Mobil1 15W-50. With
Fill Here