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We offer flat $9.95 shipping on ALL parts orders. (Complete Engines, Lower Units, Sterndrives, and Oversize items excluded). In addition, orders over $89 have reduced cost express shipping available at checkout.

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Honda Lawn Mowers All Years HR HR21-5 SDAM Parts
HR21-5-SDAM

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Engine Specifications for
HR21-5-SDAM

ModelModelHR21-5
TypeSDAM
EngineEngineGV200
Engine Serial Number PrefixHR21-5
Engine Starting Serial Number1019070
Engine Ending Serial Number9999999
Valve ClearanceSee GV200 engine.
Compression85 psi
Engine OilNULL
Engine Oil Capacity0.75 qt.
Oil FilterNULL
Engine SpeedIdle: 1,700 rpm (blade disengaged) 1,400 rpm (blade engaged) Maximum: 3,100 ± 150 rpm (blade engaged)
TransmissionTransmission Oil Capacity0.05 qt.
FuelFloat Level6.7 ~ 9.7 mm (0.264 ~ 0.382 in.)
Fuel FilterNULL
Fuel StabilizerNULL
IgnitionSpark PlugNGK BM6A NGK BMR6A
Spark Plug Gap0.6 ~ 0.7 mm (0.024 ~ 0.028 in.)
MiscGear OilSAE 90 Hypoid GL4
Gear Oil CapacityNULL
Power Trim FluidNULL
GreaseNULL
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