Diesel and Gasoline Engines Specifications and Service Data

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Honda GSV190 Engine

General Technical Data

Honda GSV190 Engine Specifications

Engine Model ............... Honda GSV190
Engine Type ............... 4-cycle OHC single cylinder air-cooled small gasoline engine
Number of Cylinders ............... 1
Displacement, cu.in (cc) ............... 11.4 (187)
Engine Bore, in (mm) ............... 2.70 (69.0)
Engine Stroke, in (mm) ............... 2.00 (50.0)
Rated Engine Power, hp (kW) ............... 6.5 (4.8)
Rated Engine Speed, rpm ............... 3600
Low Idle Speed, rpm ............... 1400±150
High Idle Speed, rpm ............... 3850±150
Maximum Torque, Nm (ft-lbs) ............... 13.2 (9.7)
Torque Speed, rpm ............... 2500
Compression ............... 8.5:1
PTO Shaft Rotation ............... Counterclockwise (from PTO shaft side)
Valve Arrangement ............... Overhead camshaft
Lubrication System ............... Splash type
Air Cleaner ............... Dry type
Cooling System ............... Forced air
Ignition System ............... Transistorized magneto
Starter Type ............... Recoil

Fuel System

Fuel System Type ............... Carburetor
Carburetor Type ............... Horizontal with butterfly valve
Governor Type ............... Centrifugal mechanical
Fuel Tank Capacity, qts (L) ............... 1.2 (1.1)
Fuel Type ............... Gasoline (86 or higher)

Dimensions and Weight

Length, in (mm) ............... 14.6 (371)
Width, in (mm) ............... 13.5 (343)
Height, in (mm) ............... 14.5 (368)
Weight (Dry), lbs (kg) ............... 24.7 (11.2)
Weight (Operating), lbs (kg) ............... 27.6 (12.5)

Honda GSV190 Maintenance Data

Cylinder Block and Valves

Cylinder Bore Inside Diameter (Maximum), in (mm) ............... 2.727 (69.165)
Cylinder Compression, psi (kPa) ............... 71 (490)
Cylinder Head (Max. Out of Flatness), in (mm) ............... 0.004 (0.10)
Intake Valve Clearance, in (mm) ............... 0.0043-0.0075 (0.11-0.19)
Exhaust Valve Clearance, in (mm) ............... 0.0063-0.0094 (0.16-0.24)

Engine Oil and Filter

Engine Oil Type (Summer) ............... SAE 10W-30
Engine Oil Type (Winter) ............... SAE 5W-30
API Service Classifications ............... SF or SG
Oil Capacity, qts (L) ............... 0.58 (0.55)
Air Filter Element Part Number ............... 17211-ZL8-023

Carburetor Adjustment

Main Jet ............... #70
Idle Fuel ............... 1-5/8 turns out
Float Height, in (mm) ............... 0.36 (9.20)
Low Idle Speed, rpm ............... 1700±150
High Idle Speed, rpm ............... 3100±150

Ignition System

Spark Plug Type ............... NGK BPR6ES
Spark Plug Gap, in (mm) ............... 0.028-0.031 (0.70-0.80)
Module Air Gap, in (mm) ............... 0.008-0.024 (0.20-0.60)
Ignition Timing, deg ............... 20 BTDC
Spark Plug Torque, Nm (ft-lbs) ............... 20 (14)

Service Intervals

Clean Air Cleaner Element ............... Every 50 hours
Change Engine Oil ............... Every 100 hours
Check and Adjust Spark Plug ............... Every 100 hours
Check Carburetor Adjustment ............... Every 200 hours
Check and Adjust Valve Clearance ............... Every 200 hours
Replace Air Cleaner Element ............... Every 200 hours
Replace Spark Plug ............... Every 200 hours

Honda GSV190 Service Data

Cylinder Block

Cylinder Bore Inside Diameter (Std), in (mm) ............... 2.72 (69.0)
Cylinder Bore Inside Diameter (Wear Limit), in (mm) ............... 2.727 (69.165)
Connecting Rod Small End Inside Diameter (Std), in (mm) ............... 0.5120 (13.005)
Connecting Rod Small End Inside Diameter (Wear Limit), in (mm) ............... 0.515 (13.07)
Connecting Rod Big End Inside Diameter (Std), in (mm) ............... 1.1819 (30.020)
Connecting Rod Big End Inside Diameter (Wear Limit), in (mm) ............... 1.1883 (30.066)
Connecting Rod Big End Oil Clearance, in (mm) ............... 0.0016-0.0025 (0.040-0.063)
Crankshaft Main Journal Outside Diameter (PTO Side), in (mm) ............... 1.1021 (27.993)
Crankshaft Main Journal Outside Diameter (Flywheel Side), in (mm) ............... 0.9997 (25.393)
Crank Pin Outside Diameter, in (mm) ............... 1.1803 (29.980)
Cam Height, in (mm) ............... 1.4722 (37.394)
Rocker Arm Inside Diameter (Std), in (mm) ............... 0.2362 (6.00)
Rocker Arm Inside Diameter (Wear Limit), in (mm) ............... 0.2379 (6.043)
Rocker Arm Shaft Outside Diameter (Std), in (mm) ............... 0.2358 (5.99)
Rocker Arm Shaft Outside Diameter (Wear Limit), in (mm) ............... 0.2344 (5.953)
Rocker Arm Shaft Bearing Inside Diameter (Std), in (mm) ............... 0.2362 (6.00)
Rocker Arm Shaft Bearing Inside Diameter (Wear Limit), in (mm) ............... 0.2379 (6.043)

Cylinder Head and Valves

Number of Valves ............... 2
Cylinder Head (Max. Out of Flatness), in (mm) ............... 0.004 (0.10)
Intake Valve Clearance, in (mm) ............... 0.0043-0.0075 (0.11-0.19)
Exhaust Valve Clearance, in (mm) ............... 0.0063-0.0094 (0.16-0.24)
Intake Valve Stem Outside Diameter (Std), in (mm) ............... 0.216 (5.48)
Intake Valve Stem Outside Diameter (Wear Limit), in (mm) ............... 0.2094 (5.318)
Exhaust Valve Stem Outside Diameter (Std), in (mm) ............... 0.214 (5.44)
Exhaust Valve Stem Outside Diameter (Wear Limit), in (mm) ............... 0.2077 (5.275)
Valve Guide Inside Diameter (Intake/Exhaust), in (mm) ............... 0.217 (5.50)
Valve Seat Width (Intake/Exhaust), in (mm) ............... 0.028 (0.70)
Valve Spring Free Length, in (mm) ............... 1.34 (34.00)
Intake Valve Head Diameter, in (mm) ............... 0.98 (25.00)
Exhaust Valve Head Diameter, in (mm) ............... 0.94 (24.00)

Piston and Piston Rings

Piston Pin Bore Inside Diameter (Std), in (mm) ............... 0.5119 (13.002)
Piston Pin Bore Inside Diameter (Wear Limit), in (mm) ............... 0.5137 (13.048)
Piston Skirt Outside Diameter, in (mm) ............... 2.7159 (68.985)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0012-0.0028 (0.031-0.070)
Piston Pin Outside Diameter (Std), in (mm) ............... 0.5118 (13.000)
Piston Pin Outside Diameter (Wear Limit), in (mm) ............... 0.5100 (12.954)
Top Compression Ring Width, in (mm) ............... 0.0591 (1.50)
Second Compression Ring Width, in (mm) ............... 0.0591 (1.50)
Oil Ring Width, in (mm) ............... 0.0984 (2.50)
Top Compression Ring Groove Side Clearance, in (mm) ............... 0.0014-0.0026 (0.035-0.065)
Second Compression Ring Groove Side Clearance, in (mm) ............... 0.0006-0.0019 (0.015-0.049)
Top Compression Ring End Gap, in (mm) ............... 0.008-0.014 (0.20-0.35)
Second Compression Ring End Gap, in (mm) ............... 0.012-0.018 (0.30-0.45)
Oil Ring End Gap, in (mm) ............... 0.006-0.014 (0.15-0.35)
Ring End Gap (Wear Limit), in (mm) ............... 0.04 (1.00)

Honda GSV190 Tightening Torque Specs

Oil Pan Bolt (M6x1.0) ............... 12 Nm (9 ft-lb)
Connecting Rod Bolt (M7x1.0) ............... 12 Nm (9 ft-lb)
Valve Adjusting Lock Nut (M5x0.5) ............... 8 Nm (5.8 ft-lb)
Cylinder Head Cover Bolt (M6x1.0) ............... 12 Nm (9 ft-lb)
Flywheel Nut (M14x1.5) ............... 75 Nm (55 ft-lb)
Governor Arm Nut (M6x1.0) ............... 10 Nm (7 ft-lb)
Breather Cover Bolt (M6x1.0) ............... 12 Nm (9 ft-lb)
Air Cleaner Case Bolt (M6x1.0) ............... 10 Nm (7 ft-lb)
Muffler Bolt (M6x1.0) ............... 12 Nm (9 ft-lb)
Recoil Starter Nut (M6x1.0) ............... 8.5 Nm (6.1 ft-lb)
Fan Cover Stud Bolt (M6x1.0) ............... 12 Nm (9 ft-lb)
Fuel Pump Screw (M5x0.8) ............... 3 Nm (2.2 ft-lb)
Spark Plug (M14x1.25) ............... 20 Nm (14 ft-lb)

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