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Briggs & Stratton Intek Vertical OHV Engine 344cc, 1in. x 3 5/32in. Shaft, Model# 21R702-0087-G1
Item# 44647

- Dura-Bore cast iron cylinder sleeve provides improved oil control for extended engine life
- AVS® anti-vibration system eliminates side-to-side motion of traditional counter and rotating balance designs to provide a smooth ride, less wear and tear and extended equipment life
- Float carburetor for consistent easy starting
- Maintenance-free Magnetron electronic ignition for quick, dependable starts
- Rewind start
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Factory Shipped —
Estimated Delivery: 4 - 6 Business Days
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Estimated Delivery: 4 - 6 Business Days


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Briggs & Stratton Intek Vertical OHV Engine 344cc, 1in. x 3 5/32in. Shaft, Model# 21R702-0087-G1
Item# 44647
Factory Shipped —Estimated Delivery: 4 - 6 Business Days
Was $479.99
Sale $454.99
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Item# 42551
Factory Shipped —Estimated Delivery: 4 - 6 Business Days
Was $519.99
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Item# 44650
Factory Shipped —Estimated Delivery: 4 - 6 Business Days
Was $579.99
Sale $549.99
Save $30.00
Item# 44649
Factory Shipped —Estimated Delivery: 4 - 6 Business Days
Was $679.99
Sale $639.99
Save $40.00
Hide Similarities
Engine Displacement (cc)
|
344 | 344 | 500 | 344 | 344 |
Start Type
|
Electric w/recoil backup | Recoil | Electric w/recoil backup | Electric | Electric |
Application | Riding mower | Riding mower | Riding mower, lawn tractor, trail mower | Riding mower | Riding mower |
Engine Type | Intek | Intek OHV | Intek | Intek OHV | Intek OHV |
Shaft Output
|
Vertical | Vertical | Vertical | Vertical | Vertical |
Crankshaft | 1 x 3 5/32 | 1 x 3 5/32 | 1 x 3 5/32 | 1 x 3 5/32 | 1 x 3 5/32 |
Shaft Diameter (in.) | 3 5/32 | 1 | 1 | 1 | 1 |
Shaft Length (in.) | 1 | 3 5/32 | 3 5/32 | 3 5/32 | 3 5/32 |
Shaft Keyway (in.)
|
1/4 | 1/4 | 1/4 | 1/4 | 1/4 |
Shaft End Tapped (Diameter (in.)/Threads per inch) | 7/16-20 | 7/16-20 | 7/16-20 | 7/16-20 | 7/16-20 |
Shaft Rotation (From PTO Shaft Side) | Counterclockwise | Counterclockwise | CCW | Counterclockwise | Counterclockwise |
Gear Reduction
|
No | No | No | No | No |
Bearing Type
|
Plain | Plain | Plain | Plain | Plain |
Cylinders (qty.)
|
1 | 1 | 1 | 1 | 1 |
Cylinder Bore
|
Cast iron | Cast iron sleeve | Cast iron | Cast iron | Cast iron sleeve |
Bore x Stroke (in.)
|
3.44 x 2.26 | 3.44 x 2.26 | 3.56 x 3.06 | 3.44 x 2.26 | 3.44 x 2.26 |
Compression Ratio
|
8.5:1 | 8.5:1 | 8.5:1 | 8.5:1 | 8.5:1 |
Cooling System
|
Air cooled | Air cooled | Air cooled | Air cooled | Air cooled |
Air Cleaner Type
|
Dual element | Cartridge style | Dual element | Cartridge style | Cartridge style |
Fuel Tank | Not included | Not included | Not included | Not included | Not included |
Fuel Type | Gasoline | Gasoline | Gasoline | Gasoline | Gasoline |
Fuel Pump
|
Yes | No | No | No | Yes |
Fuel Filter
|
Yes | Yes | No | Yes | Yes |
Oil Capacity (qt.)
|
1 1/2 | 1.5 | 1 1/2 | 1.5 | 1.5 |
Lubrication System
|
Splash | Splash | Splash | Splash | Splash |
Low Oil Alert
|
No | No | No | No | No |
Low Oil Shutdown
|
No | No | No | No | No |
Ignition System
|
Electronic | Electronic | Electronic | Electronic | Electronic |
Governor System
|
Mechanical | Mechanical | Mechanical | Mechanical | Mechanical |
Carburetor
|
Float | Float | Float | Float | Float |
Throttle Control
|
Remote | Remote | Remote | Remote | Remote |
Choke Control
|
Manual | Manual | Manual | Manual | Manual |
Max. RPM
|
3,300 | 3,600 | 3,300 | 3,600 | 3,600 |
Charging System Amps | 3A DC, 14V AC | - | 9 | 3A DC, 14V AC | 3A DC, 14V AC |
Muffler Included
|
Yes | Yes | Yes | Yes | Yes |
Flywheel Brake | No | - | No | - | - |
Auto Compression Release
|
Yes | Yes | Yes | Yes | Yes |
Bolt Circle (in.)
|
10 | 10 | 10 | 10 | 10 |
Dimensions L x W x H (in.)
|
17 1/2 x 16 1/2 x 12 | 17 x 17 x 16 1/2 | 19 x 16 x 13 | 17 x 17 x 16 1/2 | 17 x 17 x 16 1/2 |
EPA/CARB Approval (California Air Resource Board)
|
Yes | Yes | Yes | Yes | Yes |