Specifications; Engine; Drive Shaft & Cutting Head; Cold Engine Torque Specifications - Toro 51903 Manuel De L'utilisateur

Specifications

Engine

Engine Type
Stroke
Displacement
Bore
Clutch Type
Operating RPM
Ignition Type
CD Module Air Gap
Piston Ring Width
Piston Ring End Gap#
Piston Ring Side Clear-
ance
Average Compression
Spark Plug
Spark Plug Gap
Lubrication
Fuel/Oil Ratio
Carburetor
Starter
Muffler
Throttle
Fuel Tank Capacity
Bearings
Crankshaft
Connecting Rod
Fuel Tank
Air-Cooled, 2-Cycle
1.25 in (31.75 mm)
31 cc (1.9 cu. in)
1.37 in (34.79 mm)
None
7000 rpm
Electronic
0.10-0.15 in
(0.254-0.381 mm)
0.046 in (1.16 mm)
0.085 in (2.159 mm)
0.005 in max.
(0.127 mm)
90 to 120 lbs.
(41-55 kg)
Champion RDJ7Y
0.020 in (0.5 mm)
Fuel/Oil Mixture
32:1
Diaphragm, All-Posi-
tion
Auto Rewind
Baffled with Guard
Manual, Spring Return
18 oz (530 ml)
Needle and Ball
Cantilevered
Stamped Steel
HD Polyethylene
Drive Shaft & Cutting Head
Drive Shaft
Drive Shaft Housing
Operating Weight
Throttle Control
Shoulder Strap
Line Spool
Line Spool Diameter
Trimming Line Diame-
ter
Cutting Path Diameter
Cold Engine Torque
Specifications
Cylinder Bolts
Muffler Bolts
Carburetor Mount Bolts
Shroud Mounting Bolts
Module Mounting
Screws
Starter Housing
Screws
Air Cleaner Cover
Screws
Flywheel Nut
Spark Plug
Reed Screw
Chrome Vanadium,
1/4"
Steel Tube
Approx. 10.5 lbs
(4.73 kg)
Finger-Tip Trigger
Optional
Bump Line Releaser
3 in (76.2 mm)
0.080 in (2.03 mm)
18 in (45.7 cm)
120 in lb (13.5 N m)
80-90 in lb
(9-10.1 N m)
15 in lb (1.67 N m)
120 in lb (13.5 N m)
28 in lb (3.2 N m)
40 in lb (4.5 N m)
40 in lb (4.5 N m)
150 in lb (16.9 N m)
110-120 in lb
(12.3-13.5 N m)
15 in lb (1.67 N m)
EN–14