DR Power RapidFire 5.5 HP Subaru (July 2013 - Present) Engine Manual - Manual (Page 8)

8 DR ® 5.8 HP ENGINE
To prevent serious injury from fire: Follow the kit procedures in a well-ventilated area away from ignition sources. If the engine is
hot from use, shut the engine off and wait for it to cool before proceeding.
V. Running the Engine
1. Preheat the engine and push back the choke lever to the “OPEN” position.
2. Move the throttle lever to proper position to make the gasoline engine run at required
speed.
High Altitude Kit for EPAIII Engines
3000ft to 6000ft or 6000ft to 8000ft of elevation
At high altitude, the standard carburetor air-fuel mixture will be too rich. Performance will decrease and fuel consumption will
increase. A very rich mixture will also foul the spark plug and cause hard starting. Operation at an altitude that differs from
that at which this engine was certified, for extended periods of time, may increase emissions.
The fuel system on this Engine or Equipment may be influenced by operation at higher altitudes. Proper operation can be
ensured by installing an altitude kit when required. See the table below to determine when an altitude kit is required.
Operating this engine without the proper altitude kit installed may increase the engine’s emissions and decrease fuel
economy and performance. Kits may be obtained from DR Power Equipment, and should be installed by a qualified individual.
Altitude Range﹡ Kit Part
Number
0 – 3000 ft Not Required
3000 – 6000 ft Altitude kit 1#
6000 – 8000 ft Altitude kit 2#
﹡ Elevation above sea level.

This high altitude jet is to be used at elevations above 3000 feet.

At elevations above 8000 feet, the engine may experience decreased performance, even with the high altitude kit.
If a carburetor is replaced, the proper high altitude kit jet will need to be installed into the replacement carburetor.
The warranty may be void if necessary adjustments are not made for high altitude use by installing a high altitude kit.
Throttle
Lever
OPEN
Choke
Lever