Operation Manual

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MODEL 28Q700
Engine Specifications (28Q700)
Armature Air Gap .010 -.014 in. (.25 -.36 mm)
Bolt Circle (1) 10.0 in. (254 mm)
Bore 3.437 in. (87.29 mm)
Crankshaft End Play .002 -.023 in. (.05 -.58 mm)
Displacement 28.37 cu. in. (465 cc)
Fuel Tank Capacity N/A
Oil Capacity - With Filter 52 oz. (1.5 liter)
Oil Capacity - No Filter 48 oz. (1.4 liter)
Spark Plug Gap .030 in. (.76 mm)
Stroke 3.062 in. (77.78 mm)
Valve Clearance - Intake .003 -.005 in. (.08 -.13 mm)
Valve Clearance - Exhaust .005 -.007 in. (.13 -.18 mm)
Fastener Torque Specifications (28Q700) Tool Size Torque
Air Cleaner Base / Backplate 5/16 in. 55 lb-in. (6 Nm)
Air Cleaner Cover Wing Knob N/A
After-Fire Solenoid 1/2 in. 45 lb-in. (5 Nm)
Armature 5/16 in. 30 lb-in. (3 Nm)
Blower Housing Brackets 3/8 in. 85 lb-in. (10 Nm)
Blower Housing 3/8 in. & T-20 85 lb-in. (10 Nm)
Breather Cover - Air Cleaner Base 5/16 in. 35 lb-in. (4 Nm)
Breather Cover - Cylinder 5/16 in. 55 lb-in. (6 Nm)
Carburetor To Manifold Bolts 5/16 in. 65 lb-in. (7 Nm)
Connecting Rod (After 980630xx) 5/16 in. 185 lb-in. (21 Nm)
- Small Bolt (Before 980701xx) 3/8 in. 160 lb-in. (18 Nm)
- Large Bolt (Before 980701xx) 1/2 in. 260 lb-in. (29 Nm)
Control Bracket 5/16 in. 45 lb-in. (5 Nm)
Counterweight Screw 7/16 in. 115 lb-in. (13 Nm)
Sump (By Hole Size) 1/2 in.
140 / 200 lb-in. (16-23 Nm)
Cylinder Head 1/2 in. 220 lb-in. (25 Nm)
Cylinder Shield 5/16 in. 35 lb-in. (4 Nm)
Exhaust Manifold / Adaptor 1/2 in. or T-40 165 lb-in. (19 Nm)
Flywheel Fan Retainer 1/2 in. 140 lb-in. (16 Nm)
Flywheel Guard 5/16 in. 35 lb-in. (4 Nm)
Flywheel Bolt 15/16 in. 100 lb-ft. (136 Nm)
Fuel Pump 3/8 in. 45 lb-in. (5 Nm)
Fuel Pump Bracket 1/4 in. 35 lb-in. (4 Nm)
Governor Lever Nut 3/8 in. 45 lb-in. (5 Nm)
Intake Manifold 3/8 in. 100 lb-in. (11 Nm)
Muffler 1/2 in. 165 lb-in. (19 Nm)