The Kawasaki FB460V is a 0.46 l (460 cc, 28.1 cu-in) air-coolled single-cylinder four-stroke internal combustion small gasoline (petrol) engine with vertical shaft manufactured by Kawasaki Heavy Industries LTd., for general-purpose applications.
The FB460V engine has an L-head design with two valves; transistorized flywheel magneto ignition system; float type carburetor with fixed main jet and mechanical governor. The engine used a pressurized lubrication system; semi cyclone-type air cleaner with a dual element and electric or recoil starter. Engine models with the electric starter are also equipped with 12 volt – 13 A charging coil with a regulator.
Cylinder bore and piston stroke are 89.0 mm (3.5 in) and 74.0 mm (2.91 in), respectively. Compression ratio rating is 6.4:1. The Kawasaki FB460V motor produces 12.5 HP at 3,600 rpm and 28.0 Nm (2.8 kg·m, 20.1 ft·lb) at 2,300 rpm of torque.
General information
| Engine Specifications | |
| Model | FB460V |
| Type | 4-stroke, L-head, single cylinder |
| Displacement | 460 cm 3 (28.1 cu-in) |
| Max. horsepower | 12.5 HP at 3,600 rpm |
| Max. torque | 28.0 Nm (2.8 kg·m, 20.1 ft·lb) at 2,300 rpm |
| Carburetor | Float type |
| Cooling system | Forced-air |
| Ignition system | Transistorized magneto ignition |
| Lubricating system | Pressure and splash |
| Starting system | Recoil or electric starter |
| Stoping system | Ignition primary circuit ground |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Fuel tank capacity | – |
| Fuel consumption | 313 g/kWh (230 g/HPh, 0.51 lb/HPh) |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| Electric starter | Recoil starter | |
| Length | 419 mm (16.50 in) | 511 mm (20.12 in) |
| Width | 381 mm (15.0 in) | 365 mm (14.37 in) |
| Height | 307 mm (12.08 in) | 356 mm (14.0 in) |
| Dry weight | 36.0 kg (79.4 lbs) | 36.0 kg (79.4 lbs) |
Tightening torque specs
| Tightening torque specs | |
| Connecting rod cap | 19-20 Nm; 1.9-2.0 kg·m; 14-15 ft·lb |
| Cylinder head | 34-39 Nm; 3.4-3.9 kg·m; 25-29 ft·lb |
| Flywheel nut | 83-88 Nm; 8.3-8.8 kg·m; 62-65 ft·lb |
| Spark plug | 28 Nm; 2.8 kg·m; 20.6 ft·lb |
Maintenance data
| Engine | |
| Maximum speed | 3300 ± 150 rpm |
| Idle speed | 1400 ± 150 rpm |
| Cylinder compression | not be less then 3.0 kg/cm2 (43 psi) at 600 rpm |
| Valve tappet clearance (Cold) | |
| Intake valve | 0.10-0.16 mm (0.004-0.006 in) |
| Exhaust valve | 0.10-0.16 mm (0.004-0.006 in) |
| Carburetor | |
| Model | FB460D-AS |
| Main jet | #112.5 |
| Pilot jet | #47.5 |
| Float valve | 1.5 mm (0.06 in) |
| Pilot screw | 1-1/8 turns out |
| Model | FB460D-BS |
| Main jet | #115 |
| Pilot jet | #47.5 |
| Float valve | 1.5 mm (0.06 in) |
| Pilot screw | 1-1/8 turns out |
| Oil system | |
| Oil type | 4-stroke or an equivalent (SD, SE, SE/CC, SF) |
| Recommended oil | SAE 5W-20 |
| Oil capacity | 1.4 L (2.96 US pt.) |
| Ignition system | |
| Spark plug | NGK: BMR-4A CHAMPION: RCJ-8 |
| Spark plug gap | 0.6-0.7 mm (0.024-0.028 in) |
| Tightening torque | 28 Nm; 2.8 kg·m; 20.6 ft·lb |
Author:
Looking for air & oil filter
Jeff here is a link to some John Deere branded items for this engine: https://www.greenpartstore.com/John-Deere-Model-GX95-Rear-Engine-Rider-Parts.html
Oil Filter: John Deere Engine Oil Filter – AM107423
Air filter: John Deere Paper Air Filter – AM101191 (will also need the foam pre-filter)
As always, you can may find better pricing online or at your local dealer. My JD dealer usually stocks these items as my JD mower has this engine. I’ve also found compatible items on Amazon at decent prices.
Does anyone know of a replacement engine for this one My 30 yr old FB460v is getting a bit tired.
Hi Roger, I have the exact same question for my Scag and was wondering if you got anywhere with it? Email me if you found an answer.
Thanks, Bob
Valves 49002-2070 and 49002-2071 intake valve and exhaust valve is there any where with them
are E3 spark plug compatible for the kawasaki 12.5 engine