Service Manual

GAS POWER SHOVEL
9 - 24 Single Stage Snowthrower Service Manual
GAS POWER SHOVEL ENGINE SPECIFICATIONS
ENGlNE:
Type Toro built, air-cooled, 2-cycle, single cylinder gasoline engine
Rotation CCW
Displacement CC (cu·in) 20.9 cc (1 .28 cu·in)
Bore mm (in) 32mm (1.26 in)
Stroke mm (in) 26mm (1.02 in)
Compression Ratio 7:1
Cranking Pressure 689 kPa (100 psi minimum)
Operating Speed 7800 - 8800 RPM Low RPM can be affected by carburetor
adjustment
FUEL:
Fuel to Oil (Gas:Oil) Mixture 32:1
GASOLINE:
Fuel Tank Capacity Unleaded regular
One quart - leaded fuel is an acceptable substitute
CARBURETOR:
Type Walbro WTA 2
Adjustment 7/8 to 1-1/2 turns from closed
IGNITION SYSTEM:
Solid-State Capacitive Discharge Ignition (C.D.l.)
Ignition Timing Fixed
Magneto Air Gap, in.(mm)
.008 - .012 in (.20 - .30mm)
Spark Plug, Recommended
(Alternates)
NGK BMR-6A
(Champion RCJ 8 or Autolite AR7N)
Spark Plug Gap .020 - .024 (.5 - .6mm)