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Product Information

  • Model #: 55620
  • Serial #: 9000001 - 9999999
  • Product Type: Riding Products

Assembly Drawings

Search for a part within assembly drawings:

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Mulcher Kit, 52" Mower (Part # 30700)
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Mulcher Kit, 44" Mower (Part # 30752)
Toro Genuine Parts Logo
Red Paint (Gallon) (Part # 361-11)
Toro Genuine Parts Logo
Red Paint (Part # 5340)
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38" Side Discharge Mower (Part # 55650)
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44" Side Discharge Mower (Part # 55660)
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48" Rear Discharge Mower (Part # 55665)
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52" Side Discharge Mower (Part # 55670)
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7.5 cu. ft. Easy Empty Grass Catcher-38" (Part # 59178)
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7.5 cu .ft. Twin Bagger-38" (Part # 59186)
  • Model #
    55620
  • Serial #
    9000001 - 9999999
  • Product Name
    HMR-1600
  • Product Brand
    Toro
  • Product Type
    Riding Products
  • Product Series
    HMR
  • Swath
    Deck Optional
  • Discharge
    Deck Optional
  • Engine/Motor Manufacturer
    Kohler
  • Engine/Motor Size
    16 hp
  • Engine/Motor Type
    4 Cycle
  • Engine Starter
    Electric
  • Transmission Type
    Gear
  • Engine: Displacement
    42.18 (cu.in.)
  • Engine: Horsepower
    16
  • Engine: Bore
    3.12"
  • Engine: Stroke
    2.75"
  • Engine: Compression Ratio
    5.8:1
  • Engine: Approx. Weight
    130lbs.
  • Engine: Approx. Oil Capacity (With out oil filter)
    1.75 qts.
  • Engine: Camshaft End Play
    .003/.013"
  • Engine: Camshaft to Camshaft Bearing Running Clearance
    .0010/.0025"
  • Engine: Preliminary Idle Fuel Screw Setting
    1.25 Turns
  • Engine: Float Level
    .690/.720"
  • Engine: Connecting Rod to Crankpin Running Clearance (New)
    .0012/.0024"
  • Engine: Rod to Crankpin Max. Wear Limit
    .0029"
  • Engine: Rod to Piston Pin Running Clearance (New)
    .0006/.0011"
  • Engine: Rod Side Play On Crankpin
    .005/.016"
  • Engine: Crankshaft End Play
    .002/.014"
  • Engine: Main Bearing Surface Max. Wear Limit
    1.7407"
  • Engine: Sleeve Bearing Max. (out of round).
    .0005"
  • Engine: Sleeve Bearing Max. Taper
    .001"
  • Engine: New Sleeve Bearing Max. Running Clearance
    .0049"
  • Engine: Sleeve Bearing Running Clearance Max. Wear Limit
    .0059"
  • Engine: New Sleeve Bearing I.D. (Installed)
    1.7439/1.7461"
  • Engine: Crankpin O.D. (New)
    1.3733/1.3738"
  • Engine: Crankpin O.D. Max. Wear Limit
    1.3728"
  • Engine: Crankpin O.D. Max. Out of Round
    .0005"
  • Engine: Crankpin O.D. Max. Taper
    .001"
  • Engine: Cylinder Bore I.D. (new)
    3.1245/3.1255"
  • Engine: Cylinder Bore I.D. Wear Limit
    3.128"
  • Engine: Cylinder Bore I.D. Max. Out of Round
    .002"
  • Engine: Cylinder Bore I.D. Max.Taper
    .0015"
  • Engine: Cylinder Head Max. Out of Flatness
    .003"
  • Engine: Ignition Module to Magnet Air Gap
    .008/.012"
  • Engine: Spark Plug Type
    (Champion) RV15YC
  • Engine: Oil Pump Shaft To Crankcase Running Clearance
    .0010/.0026"
  • Engine: Oil Pump Drive Gear End Play
    .010/.029"
  • Engine: Piston Thrust Face O.D. @ D1 (New)
    3.1203/3.1210"
  • Engine: Piston Thrust Face O.D.@ D1 Max. Wear Limit
    3.1181"
  • Engine: Piston Thrust Face to Bore Clearance @ D1 (New)
    .0035/.0052"
  • Engine: Piston Ring End Gap (New)
    .010/.023"
  • Engine: Piston Ring End Gap (Used Max.)
    .032"
  • Engine: Piston Ring Side Clearance (Max)
    .006"
  • Engine: Piston Pin O.D. (New)
    .6247/.6249"
  • Engine: Intake Valve To Tappet Clearance (Cold)
    .003/.006"
  • Engine: Exhaust Valve To Tappet Clearance (Cold)
    .013/.016"
  • Engine: Intake Valve Min. Lift - Zero Lash
    .274"
  • Engine: Exhaust Valve Min. Lift - Zero Lash
    .274"
  • Engine: Intake Valve Stem Min. O.D.
    .3103"
  • Engine: Exhaust Valve Stem Min. O.D.
    .3088"
  • Engine: Norminal Valve Seat Angle (Intake & Exhaust)
    45 & 30 Degrees
  • Engine: Valve Guide Reamer Size
    .3125"
  • Engine: Intake Valve Guide I.D. Max. Wear Limit
    .005"
  • Engine: Exhaust Valve Guide I.D. Max. Wear Limit
    .007"
  • Engine Torque: Throttle Plate / Choke Plate Retaining Screw
    8/12 in.-lbs.
  • Engine Torque: Main Fuel Jet
    12/16 in.-lbs.
  • Engine Torque: Bowl Retaining Screws
    45/55 in.-lbs
  • Engine Torque: Connecting Rod Nut ( New )
    140 in.-lbs.
  • Engine Torque: Connecting Rod Nut ( Used )
    100 in.- lbs.
  • Engine Torque: IN. & EX. Manifold Fastener
    150 in.- lbs.
  • Engine Torque: Oil Pan Fastener
    150 in.- lbs.
  • Engine Torque: Cylinder Barrel Nut
    200 in.- lbs.
  • Engine Torque: Crankcase Nut
    260 in. - lbs.
  • Engine Torque: 5/16 Crankcase Screw
    200 in.- lbs.
  • Engine Torque: 3/8 Crankcase Screw
    260 in.- lbs.
  • Engine Torque: Cap Screw
    15/20 ft.- lbs
  • Engine Torque: Fan Fastener
    115 in.- lbs
  • Engine Torque: Flywheel Fastener
    40 ft.- lbs
  • Engine Torque: Fuel Pump
    40/45 in.- lbs.
  • Engine Torque: Spark Plug Torque
    10/15 ft.- lbs
  • Engine Torque: Engine Mtd. Filter Adapter Fastener
    125 in.- lbs
  • Engine Torque: Remote Oil Filter Cover Fastener
    125 in.- lbs
  • Engine Torque: Remote Oil Line Fitting Nut
    65/80 in.- lbs.
  • Engine Torque: Remote Oil Line Reducing Connector
    65/80 in.- lbs.
  • Engine Torque: Remote Oil Line Flare Nut
    100/120 in.- lbs.
  • Engine Torque: Remote Oil Filter Adapter Fitting
    90/130 in.- lbs.
  • Engine Torque: Oil Filter Installation
    50/80 in.- lbs.
  • Engine Torque: Oil Filter Bypass Cover
    125 in.- lbs.
  • Engine Torque:
  • Chassis: Tire Pressure
    12 PSI / .5kg sq. cm
  • Drive System: Ground Speed
    Fwd. 1.5 - 5.8 Rev. 1.8 mph
  • Engine: Battery
    12V 160CCA
  • Engine: Engine Speed
    High 3200, Low 1750 RPM
  • Engine: Spark Plug
    Champion RV15YC
  • Engine: Spark Plug Gap
    .030"/ .76mm

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