Honda G100K2 Applications Manual page 76

DIRECT DRIVE SYSTEMS
•
Use a flexible coupling on the drive shaft when the attachment is very heavy, heavily pulsating or when the
alignment is not precise.
•
Timing of attachment power cycle to engine power cycle
In applications where a single cylinder engine is directly coupled to a multi-cylinder, pulsating application (multi-
cylinder compressor, waterpump, hydraulic pump), it is important to synchronize the power cycle of the engine
(combustion stroke) with the power cycle of the application (high pressure, maximum delivery reached).
•
Lawnmower blade holder coupling
The lawnmower blade holder fixing on the engine shaft is very critical with regards to user's safety and engine
shaft damage protection.
Attention points:
- Correct blade holder depth and inner diameter
for tight fit on crankshaft.
- Correct dimension of key and key-way for tight fit
on crankshaft key-way
- Blade holder contact base flat surface for
overall contact with crankshaft face
- Retainer bolt correct tightening torque
- Washer and spring washer quality for securing
the retainer bolt
- Blade holder material hardness ; no material
deformation on contact area crankshaft – blade
holder
Flexible
coupling
Knock pin
Spring
washer
- 75 -
POWER TRANSMISSION
Blade holder
contact base
Blade
Retainer bolt