Model #

73441

Serial #

7900001 - 7999999

Product Name

416-8 Garden Tractor

Product Brand

Toro

Product Type

Riding Products

Product Series

Garden Tractor, 3/4/500, C, GT

Swath

Deck Optional

Discharge

Deck Optional

Engine/Motor Manufacturer

Toro Power Plus/Onan

Engine/Motor Size

16 hp

Engine/Motor Type

4 Cycle CARB1

Engine Starter

Electric

Transmission Type

Gear

Engine: Bore

3.250" (82.55mm)

Engine: Stroke

2.620" (66.55mm)

Engine: Displacement

43.3 cu.in. (710cc)

Engine: Compression Ratio

6.5:1

Engine: Rated Speed (maximum)

3600 RPM

Engine: Power at Rated Speed

16hp (11.9kw)

Engine: Oil Capacity (std) Base without Filter

1.5qts. (1.4L)

Engine: Oil Capacity (high cap.) Base without Filter

2.7qts. (2.6L)

Engine: Oil Filter Capacity

.3qts. (.3L)

Engine: Crankshaft Rotation (Viewed from flywheel)

Clockwise

Engine: Valve Clearance Intake (cold)

.005" (.13mm)

Engine: Valve clearance Exhaust (cold)

.013" (.33mm)

Engine: Ignition Timing (BTC)

20 Degrees

Engine: Cylinder Compression

75/115 psi (517/793 kPa)

Engine: Cylinder Bore Honed Diameter (minimum)

3.2490" (82.52mm)

Engine: Cylinder Bore Honed Diameter (maximum)

3.2500" (82.55mm)

Engine: Cylinder Block Taper Maximum Allowed

0.005" (0.13mm)

Engine: Cylinder Block Out of round (max. allowed )

0.003" (0.08mm)

Engine: Cylinder Block Main Bearing I.D.(without bearing)(minimum)

2.1870" (55.55mm)

Engine: Cylinder Block Main Bearing I.D.(without bearing)(maximum)

2.1880" (55.58mm)

Engine: Cylinder Block Main Bearing I.D.(installed service bearing) Minimum

2.0015" (50.84mm)

Engine: Cylinder Block Main Bearing I.D.(installed service bearing) Maximum

2.0040" (50.90mm)

Engine: Camshaft Bearing Bore (installed service bearing) Minimum

1.3757" (34.94mm)

Engine: Camshaft Bearing Bore (installed service bearing) Maximum

1.3787" (35.02mm)

Engine: Crankshaft Main Bearing Journal Diameter (minimum)

1.9992" (50.78mm)

Engine: Crankshaft Main Bearing Journal Diameter (maximum)

2.000" (50.80mm)

Engine: Crankshaft Main Bearing Clearance (minimum)

0.0024" (0.061mm)

Engine: Crankshaft Main Bearing Clearance (maximum)

0.0042" (0.107mm)

Engine: Crankshaft Connecting Rod Journal Diameter (minimum)

1.6252" (41.28mm)

Engine: Crankshaft Connecting Rod Journal Diameter (maximum)

1.6260" (41.30mm)

Engine: Crankshaft End Play (minimum)

0.0060" (0.152mm)

Engine: Crankshaft End Play (maximum)

0.0120" (0.305mm)

Engine: Rod Large Bore Diameter "bolts torqued "(minimum)

1.6280" (41.35mm)

Engine: Rod Large Bore Diameter "bolts torqued "(maximum)

1.6285" (41.36mm)

Engine: Connecting Rod Side Clearance (minimum)

0.0020" (0.051mm)

Engine: Connecting Rod Side Clearance (maximum)

0.0160" (0.406mm)

Engine: Piston Pin Bushing Bore (finished Bore)" minimum"

0.6879" (17.47mm)

Engine: Piston Pin Bushing Bore (finished Bore)" maximum"

0.6882" (17.48mm)

Engine: Bearing to Crankshaft Clearance " minimum"

0.0020" (0.051mm)

Engine: Bearing to Crankshaft Clearance " maximum"

0.0033" (0.084mm)

Engine: Camshaft Bearing Journal Diameter "minimum"

1.3740" (34.90mm)

Engine: Camshaft Bearing Journal Diameter "maximum"

1.3745" (34.91mm)

Engine: Camshaft Bearing Clearance "minimum"

0.0015" (0.038mm)

Engine: Camshaft Bearing Clearance "maximum"

0.0030" (0.076mm)

Engine: Camshaft End Play "minimum"

0.0110" (0.279mm)

Engine: Camshaft End Play "maximum"

0.0480" (1.219mm)

Engine: Camshaft Lobe Height " Intake"

1.1370" (28.88mm)

Engine: Camshaft Lobe Height "Exhaust"

1.1570" (29.39mm)

Engine: Piston Clearance in Cylinder (Measure 90 Degrees to pin 1.187" below top of piston "minimum"

0.0033" (0.084mm)

Engine: Piston Clearance in Cylinder (Measure 90 Degrees to pin 1.187" below top of piston "maximum"

0.0053" (0.135mm)

Engine: Piston Pin Bore "minimum"

0.6877" (17.47mm)

Engine: Piston Pin Bore "maximum"

0.6882" (17.48mm)

Engine: Ring Groove Width Compression Ring "minimum"

0.0800" (2.032mm)

Engine: Ring Groove Width Compression Ring "maxmum"

0.0810" (2.057mm)

Engine: Oil Control Ring "minimum"

0.1880" (4.775mm)

Engine: Oil Control Ring "maximum"

0.1890" (4.800mm)

Engine: Piston Pin Clearance in Piston " minimum"

0.00004" (0.001mm)

Engine: Piston Pin Clearance in Piston " maximum"

0.00064" (0.016mm)

Engine: Piston Pin in Connecting Rod "minimum"

0.0002" (0.005mm)

Engine: Piston Pin in Connecting Rod "maximum"

0.0007" (0.018mm)

Engine: Piston Pin Diameter " minimum"

0.6875" (17.46mm)

Engine: Piston Pin Diameter " maximum"

0.6877" (17.47mm)

Engine: Piston Ring Clearance at Top Groove "minimum"

0.0030" (0.076mm)

Engine: Piston Ring Clearance at Top Groove "maximum"

0.0080" (0.203mm)

Engine: Piston Ring End Gap in Cylinder " minimum"

0.0100"(0.254mm)

Engine: Piston Ring End Gap in Cylinder " maximum"

0.0200" (0.508mm)

Engine: Intake Valve Stem Diameter "minimum"

0.2795" (7.099mm)

Engine: Intake Valve Stem Diameter "maximum"

0.2800" (7.112mm)

Engine: Intake Valve Clearance Stem to Guide " minimum"

0.0020" (0.051mm)

Engine: Intake Valve Clearance Stem to Guide " maximum"

0.0025" (0.064mm)

Engine: Intake Valve Face Angle

44 Degrees

Engine: Intake Valve Seat Bore Diameter in Block " minimum"

1.4395" (36.56mm)

Engine: Intake Valve Seat Bore Diameter in Block " maximum"

1.4405" (36.59mm)

Engine: Intake Valve Seat Outside Diameter "minimum"

1.4700" (37.34mm)

Engine: Intake Valve Seat Outside Diameter "maximum"

1.4710" (37.36mm)

Engine: Intake Valve Seat Width "minimum"

0.0310" (0.787mm)

Engine: Intake Valve Width "maximum"

0.0470" (1.194mm)

Engine: Intake Valve Seat Angle

45 Degrees

Engine: Exhaust Valve Stem Diameter " minimum"

0.2780" (7.061mm)

Engine: Exhaust Valve Stem Diameter " maximum"

0.2785" (7.074mm)

Engine: Exhaust Valve Clearance Stem to Guide "minimum"

0.0020" (0.051mm)

Engine: Exhaust Valve Clearance Stem to Guide "maximum"

0.0035" (0.089mm)

Engine: Exhaust Valve Face Angle

44 Degrees

Engine: Exhaust Valve Seat Bore Diameter in Block "minimum"

1.1890" (30.20mm)

Engine: Exhaust Valve Seat Bore Diameter in Block "maximum"

1.1900" (30.23mm)

Engine: Exhaust Valve Seat O.D. "minimum"

1.1920" (30.28mm)

Engine: Exhaust Valve Seat O.D. "maximum"

1.1930" (30.30mm)

Engine: Exhaust Valve Seat Width "minimum"

0.0310" (0.787mm)

Engine: Exhaust Valve Seat Width "maximum"

0.0470" (1.194mm)

Engine: Exhaust Valve Seat Angle

45 Degrees

Engine: Valve Guide, Intake I.D. "minimum"

0.2810" (7.137mm)

Engine: Valve Guide, Intake I.D. "maximum"

0.2820" (7.163)

Engine: Valve Guide, Exhaust I.D. "minimum"

0.2805" (7.125mm)

Engine: Valve Guide, Exhaust I.D. "maximum"

0.2815" (7.150mm)

Engine: Tappet Body Diameter " minimum"

0.7475" (18.99mm)

Engine: Tappet Body Diameter " maximum"

0.7480" (19.00mm)

Engine: Tappet Bore Diameter "minimum"

0.7500" (19.05mm)

Engine: Tappet Bore Diameter "maximum"

0.7515" (19.09mm)

Engine: Tappet Clearance in Bore " minimum"

0.0020" (0.051mm)

Engine: Tappet Clearance in Bore " maximum"

0.0040" (0.102mm)

Engine: Valve Spring Free Length

1.600" (40.64mm)

Engine: Valve Spring Length Open

1.055" (26.80mm)

Engine: Valve Spring Length Closed

1.346" (34.19mm)

Engine: Spring Load (Valve Open )

55 lbs.

Engine: Spring Load (Valve Closed)

25 lbs

Engine: Timing Gear "minimum" (Backlash)

0.0010" (0.025mm)

Engine: Timing Gear "maximum" (Backlash)

0.0050" (0.127mm)

Engine: Oil Pump Gear "minimum" (Backlash)

0.0010" (0.025mm)

Engine: Oil Pump Gear "maximum" (Backlash)

0.0080" (0.203mm)

Engine Torque: Gearcase Cover

8-10 ft.lbs. (11-14 Nm)

Engine Torque: Rear Bearing Plate Screws

25-27 ft.lbs. (34-37Nm)

Engine Torque: Starter Mounting Bolts

19-21 ft.lbs.(25-28Nm)

Engine Torque: Connecting Rod Bolts

12-14 ft.lbs. (16-19Nm)

Engine Torque: Flywheel Capscrews

50-55 ft.lbs. (67-75Nm)

Engine Torque: Oil Base

18-23 ft.lbs.(24-31Nm)

Engine Torque: Oil Pump

7-9 ft.lbs. (10-12Nm)

Engine Torque: Valve Cover

1-2 ft.lbs. (1-3Nm)

Engine Torque: Cylinder Bolts Asbestos Gasket (Cold)

14 ft.lbs. (22-24Nm)

Engine Torque: Cylinder Bolts Graphoil Gasket (Cold)

14-16 ft.lbs. (19-22Nm)

Engine Torque: Intake Manifold Mounting Screws

6-10 ft.lbs. (8-14Nm)

Engine Torque: Exhaust Manifold Mounting Screws

9-11 ft. lbs. (12-15Nm)

Engine Torque: 1/4" Cylinder Block Stud & Nuts

7-9 ft.lbs. (10-12Nm)

Engine Torque: 5/16" Cylinder Block Stud & Nuts

8-10 ft.lbs. (11-14Nm)

Engine Torque: 3/8" Cylinder Block Stud & Nuts

18-23 ft.lbs. (24-31Nm)

Chassis: Tire Pressure

12 PSI / .5kg sq. cm

Drive System: Ground Speed

Fwd. .5 - 5.5 Rev. .7 & 2.6 mph

Engine: Battery

12V 200CCA

Engine: Engine Speed

High 3600, Low 1400 RPM

Engine: Spark Plug

Champion RS14YC

Engine: Spark Plug Gap

.025"/ .64mm