Gravely 985103, Service Manual

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3 -6
SECTION 3 - SPECIFICATIONS
Model Number 985103 985104 985105 985107
Description 8HP Gear Drive 8HP Gear Drive 8HP Gear Drive 12 HP Gear Drive
Brakes Optional, individual, 7" (17.8 cm) x 1.75" (4.4 cm) drum type
Steering Manual, optional power steering kit available
Turning Radius Zero (with steering kit)
Minimum Uncut Circle Zero Zero Zero Zero
Optional Tire Sizes
-Stud Tread 4" x 8", 4 ply 4" x 8", 4 ply 4" x 8", 4 ply 4" x 8", 4 ply
-Trac Tread 4" x 8", 4 ply 4" x 8", 4 ply 4" x 8", 4 ply 4" x 8", 4 ply
-Turf-Chief 18" x 6.5" x 8", 4 ply 18" x 6.5" x 8", 4 ply 18" x 6.5" x 8", 4 ply 18" x 6.5" x 8", 4 ply
-Turf-Saver 18" x 8.5" x 8", 4 ply 18" x 8.5" x 8", 4 ply 18" x 8.5" x 8", 4 ply 18" x 8.5" x 8", 4 ply
-Semi-Pneumatic 16" x 5" x 3", 4 ply 16" x 5" x 3", 4 ply 16" x 5" x 3", 4 ply 16" x 5" x 3", 4 ply
Tire Pressure 18 psi 18 psi 18 psi 18 psi
Battery 12 volt, BCI group 12 volt, BCI group 12 volt, BCI group 12 volt, BCI group
Engine Kohler Kohler Kohler Kohler
-Type K181T K181T K181S M12T (PS471525)
-Horsepower 8HP at 3600 RPM 8HP at 3600 RPM 8HP at 3600 RPM 12HP at 3600 RPM
-Number of Cylinders One One One One
-Displacement 18 cu. in. (305.4 cc) 18 cu. in. (305.4 cc) 18 cu. in. (305.4 cc) 29 cu. in. (476.5 cc)
-Fuel Gasoline, 87 minimum
octane
Gasoline, 87 minimum
octane
Gasoline, 87 minimum
octane
Gasoline, 87 minimum
octane
-Fuel Capacity 1.25 gals. (4.7 L) 1.25 gals. 4.7 L) 1.25 gals. (4.7 L) 2.0 gals. (4.7 L)
-Cooling Air Air Air Air
-Air Filter Dual Element with
PreCleaner
Dual Element with
PreCleaner
Dual Element with
PreCleaner
Dual Element with
PreCleaner
-Lubrication Splash System Splash System Splash System Splash System
-Oil Type See Engine Manual See Engine Manual See Engine Manual See Engine Manual
-Oil Capacity 2.5 pts. (1.2 L) 2.5 pts. (1.2 L) 2.5 pts. (1.2 L) 2.5 pts. (1.2 L)
-Oil Filter N/A N/A N/A Spin on oil filter
-Charging System Recoil Recoil 12 volt, 15 amp 12 volt, 15 amp
Transmission
-Type All gear planetary transmission with fully enclosed PTO and immersion clutch
-Oil Type SAE 30W API service class SF or higher
-Oil Capacity 5 qts (4.7 L) 5 qts (4.7 L) 5 qts (4.7 L) 5 qts (4.7 L)
-Cooling Air Air Air Air
-Number of Speeds 2 forward/2 reverse 4 forward/4 reverse 4 forward/4 reverse 4 forward/4 reverse
Speeds (with 18" tires)
-Forward 1st - 2.0 mph (3.2 kph)
2nd - 2.5 mph (4.0 kph)
1st - 1.3 mph (2.1 kph)
2nd - 1.7 mph (2.7 kph)
3rd - 2.6 mph (4.2 kph)
4th - 3.4 mph (5.5 kph)
1st - 1.4 mph (2.3 kph)
2nd - 1.8 mph (2.9 kph)
3rd - 2.7 mph (4.4 kph)
4th - 3.7 mph (6.0 kph)
-Reverse 1st - 1.9 mph (3.1 kph)
2nd - 2.4 mph (3.9 kph)
1st - 1.2 mph (2.0 kph
2nd - 1.6 mph (2.6 kph)
3rd - 2.4 mph (3.9 kph)
4th - 3.1 mph (5.0 kph)
1st - 1.3 mph (2.1 kph)
2nd - 1.7 mph (2.7 kph)
3rd - 2.6 mph (4.2 kph)
4th - 3.3 mph (5.3 kph)
PTO
-Type Internal Slip Clutch Internal Slip Clutch Internal Slip Clutch Internal Slip Clutch
-Drive All gear shaft driven off high/low planetary
-Output Speeds High - 1179 RPM, low - 888 RPM at 3300 engine RPM
Construction Cast-iron transmission case with 7-gauge framing