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Honda Lawn Mowers All Years HRA HRA21 SDA Parts
HRA21-SDA

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Engine Specifications for
HRA21-SDA

ModelModelHRA21
TypeSDA
EngineEngineGV150K1
Engine Serial Number PrefixHRA21
Engine Starting Serial Number1000001
Engine Ending Serial Number9999999
Valve ClearanceIN: 0.12 ± 0.04 mm EX: 0.20 ± 0.04 mm
Compression70 psi
Engine Oil Capacity0.65 qt.
Engine SpeedIdle: 1,700 rpm (blade disengaged) 1,400 rpm (blade engaged) Maximum: 3,200 ± 150 rpm (blade engaged)
TransmissionTransmission Oil Capacity0.08 qt.
FuelFloat Level6.7 ~ 9.7 mm (0.264 ~ 0.382 in.)
IgnitionSpark PlugNGK BMR6A
Spark Plug Gap0.6 ~ 0.7 mm (0.024 ~ 0.028 in.)
MiscGear OilSAE 90 Hypoid GL4
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