Honda G100K2 Applications Manual page 70

POWER TRANSMISSION SYSTEMS
The power transmissions between the engine output shaft and the application can be classified into three types:
Direct drive - direct shaft coupling as used on generator, pump.
Belt drive - as used on plate compactor, compressor.
Other drive – gear drive, clutch, transmission, flexible coupling, etc.
Transmission efficiency
Direct drive η = 1.00
V - Belt drive η = 0.95
Flat belt drive η = 0.90
Flexible coupling η = 0.98
Shaft coupling
Install the attachment (pulley, clutch) on the crankshaft using
a correct key.
Use the appropriate washers and retainer bolt and torque the
bolt securely.
Don not install an attachment without a key.
Do not secure an attachment with a retainer bolt directly
on the engine output shaft.
The attachment center should not overhang the end of the
crankshaft.
Mount the attachment as close to the engine as possible.
Three bearing drive
This connection method builds up a unitary construction
which distributes the load over the complete structure
and is generally used for generators and high pressure
pumps.
For correct alignment of the engine shaft and application
shaft, the mounting surface of the application must be
machined accordingly.
In case of conical shaft fitting, the connection must be
secured by a retainer bolt.
No good
PTO shaft
Overhang "0"
Interference between the inner chamfer of the
attachment shaft and the engine output shaft shoulder
(point R) should be checked carefully.
If the inner chamfer of the attachment shaft is to sharp,
there is a risk of cutting through the hardened surface of
the engine shaft.
- 69 -
POWER TRANSMISSION
Key
OK
Pulley Pulley
PTO shaft
Overhang "0"
Conical shaft fitting
Retainer bolt