Smithco Supreme 35-000-A (sn 101988) Parts & Service Manual - Manual (Page 7)

5
Service
MAINTENANCE
TIRE PRESSURE
Caution must be used when inflating a low tire to recommended pressure. Over inflating can cause tires to
explode. Tires should be 5 psi (0.35 bar). Improper inflation will reduce tire life considerably.
ENGINE OIL KAWASAKI
Change and add oil according to chart below. Do not overfill. Use a high quality detergent oil. For Kawasaki en-
gine API Service Classification: SJ or higher. For Kohler engine use oil classified "For Service SJ or higher."
Use no special additives with recommended oils. Do not mix oil with gasoline.
SAE VISCOSITY GRADES
Kohler Engine Kawaskai Engine
Starting Temperature Range Anticipated Before Next Oil Change
Use of multi-viscosity oils (10W-30, etc) will result in increased oil consumption. Check oil level more frequently
if using these types of oils.
HYDRAULIC OIL
1. Use SAE 10W-40 API Service SJ or higher motor oil.
2. For proper warranty, change oil every 500 hours or annually, which ever is first and change filter after
the first 20 hours, then at 100 hours, then every 250 hours thereafter.
3. The oil level should be 2" to 2 1 /
2
" from top of tank when fluid is cold. Do not overfill.
4. After changing oil and/or filter, run the machine for a few minutes. Check oil level and for leaks.
5. Always use caution when filling hydraulic oil tank or checking level to keep system free of contaminants.
Check and service more frequently when operating in extremely cold, hot or dusty conditions.
6. If natural color of fluid is now black or smells burnt, it is possible that an overheating problem exists.
7. If fluid becomes milky, water contamination may be a problem.
8. If either of the above conditions happen, change oil and filter immediately after fluid is cool and find cause.
Take fluid level readings when system is cold.
9. In extreme temperatures you can use straight weight oil. We recommend SAE 30W API Service SJ or
higher when hot (above 90°F (33°C)) and SAE 10W API Service SJ or higher when cold (below 32°F
(0°C) ambient temperature. Use either motor oil or hydraulic oil, but do not mix.
10. Oil being added to the system must be the same as what is already in the tank. Mark tank fill area as to
which type you put in.
TOWING
When it is necessary to move the Supreme without engine running, by-pass valve built into hydrostatic pump
must be "open" by truning it counter-clockwise. The valve is located on top of the pump on the liquid cooled
(Kawasaki) and the bottom of the pump on the air cooled (Kohler). An "open" valve allows fluid to pass through
the wheels freely. When normal, driven, operation is desired, valve should be "closed by turning it clockwise.
Failure to "close" the valve with engine running means no power to wheels.