Details
The 3-stage air filter system: saves time and money
The pulled in air passes first through the cyclone filter where the majority of dirt particles are already removed. This is followed by the foam material prefilter. The pre-cleansed air only meets the main filter at the end of the process. This results in a manifold increase of the air filter's service life. In addition, there is only minimal loss of pressure.This ensures a consistently high engine performance.
The Soft-Start: no effort recoil starter
An innovative mechanism allows the user to start the device with minimal effort. Less strenuous and faster, ready for action.
Thus the hand-arm vibration remains well below the threshold of 5 m/s². This permits a continuous operation of up to eight hours per day. According to EU Directive EU 2002/44/EC.
Technical specifications:
| | BTS 630 | BTS 635s |
| Weight lb | 24 | 24.9 |
| Blade diameter max. in | 12 | 14 |
| Blade diameter min. in | 12 | 12 |
| Range in | 0.2 | 0.2 |
| Blade arbor in | 0.787 | 1 |
| RPM / speed of the blade (max.) rpm | 4,240 | 4,240 |
| Cutting depth max. in | 4.1 | 5 |
| Engine / Motor | Single-cylinder two-cycle gasoline engine | Single-cylinder two-cycle gasoline engine |
| Displacement in³ | 5.2 | 5.2 |
| Power kW (hp) | 4.3 (5.8) | 4.3 (5.8) |
| Fuel consumption US gal/h | 0.6 | 0.6 |
| Tank capacity US qt | 1.2 | 1.2 |
| Gasoline / oil mixture | 50:1 | 50:1 |