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633GC OPERATOR’S MANUAL
8
© 2007 ICS, Blount Inc. P/N 70944 Jan 07
TECHNICAL SPECIFICATIONS
Engine Type 2-stroke, Air Cooled
Displacement 101cc (6.2 cu in)
Horsepower 6.5 HP (4.8 kw) @ 8700 RPM
Engine Speed
11,500+/-500 RPM, Mechanically
governed
Diamond Chain Speed 4,950 fpm (25m/s), free running
Idling Speed 2800-3200 RPM
Weight
27.5 lbs (12.5kg) with guide bar and
diamond chain
Cut Depth 14 in (36cm) & 16.2 in (41cm)
Bar Lengths 14 in (36cm) & 16.2 in (41cm)
Carburetor Walbro WGAK3, Throttle shaft sealed,
Ignition Selettra electronic – Water resistant
Clutch Centrifugal, three shoe, single spring
Fuel ratio 25:1 gasoline-to-oil
Fuel Capacity
34 oz (1 Liter)
15-18 minutes run time per tank
Water Supply Minimum 20psi (1.5 bar)
Water Flow Minimum: 2 gpm (8 lpm)
Noise Level 102dB at 3 ft (1m)
Vibration Level 8 meters/sec
2
(front handle)
Engine Break-in Period
One tank, without cutting, cycling
throttle
Spark Plug Champion CJ7Y or Bosch BWS7F