633GC SHOP MANUAL
4
Copyright © 2005 ICS, Blount Inc.
2. SPECIFICATIONS
Specifications
Engine Type
2-Stroke Single Cylinder Air Cooled
Displacement
6.2 cu.inch (0 cc)
Horsepower
6. hp (4.6 kw) @ 8700 rpm
Engine Speed
,500 ± 500 rpm, mechanically governed
2500-2800 rpm @ idle
Piston ring gap (Maximum)
.040 in. ( mm)
Chain Speed
4950 fpm (25 m/s), free running
4000 fps (20 m/s), in the cut
Weight
27.5 lbs. (2.5 kg)
Cutting Depth
Up to 6 inches (40.6 cm)
Dimensions
23 inches (58 cm) length
4 inches (35 cm) height
2 inches (30 cm) width
Carburetor
Walbro diaphragm WGAK3 w/ throttle shaft seals
Air Filtration
Washable cotton (K&N) or washable dry nylon
Starter
Dust and water shielded
Ignition
Electronic, water sealed
Spark plug type
Champion RCJ-7Y (for conversion chart see appendix)
Clutch
Three-weight, single spring, centrifugal
Fuel Mix Ratio
25: gasoline to oil with oil brand name gasoline and ICS
®
2-stroke
engine oil, or other high quality 2-stroke engine oil for air cooled
engines.
Fuel Capacity
.26 gal ( liter)
5-8 minute run time
Water Supply
Minimum 20 psi (.5 bar)
Noise Level
02 dB @ meter
Vibration Level
8 m/s @ front handle
Cutting Rate
Hard aggregates w/ steel: 5-25 sq-in/min (90-60 sq-cm/min)
Medium aggregates: 20-30 sq-in/min (60-90 sq-cm/min)
Masonry, soft aggregates: 30-50 sq-in/min (90-320 sq-cm/min)
