Service Manual

Workman GTX Gasoline
Drive Train
Page 4 − 4
Drive Train Operation
Clutch System Operation
1. Primary clutch
2. Secondary clutch
3. Moveable sheave (primary clutch)
4. Stationary sheave (primary clutch)
5. Moveable sheave (driven clutch)
6. Spring
7. Stationary sheave (secondary clutch
)
8. CVT drive belt
Figure 1
v
5
3
1
4
6
2
7
LOW ENGINE SPEED
LIGHT LOAD
FULL ENGINE SPEED
DECREASING LOAD
FULL ENGINE SPEED
INCREASING LOAD
8
AB C
Power is transferred from the engine to the transaxle by
a variable clutch system that consists of two (2) clutches
connected by a drive belt. The primary clutch responds
to engine speed, and is mounted to the engine crank-
shaft. The secondary clutch responds to changes in
load to the rear axle, and is mounted to the transaxle in-
put shaft.
The two clutches work together to automatically up−shift
and back−shift as changes in load and speed occur. This
shifting changes the turning ratio between the primary
and secondary clutches and allows the engine to oper-
ate at optimum efficiency.