Yanmar 3JH4E, Operation Manual

Page: 69 / 142

4. Install the belt cover.
Note: If replacing the V-belt, loosen the
V-pulley of the coolant pump to remove V-
belt.
Inspecting and Adjusting
Intake / Exhaust Valve Clearance
Proper adjustment is necessary to maintain
the correct timing for opening and closing
the valves. Improper adjustment will cause
the engine to run noisily, resulting in poor
engine performance and engine damage.
See your authorized Yanmar marine dealer
or distributor to adjust the intake / exhaust
valve clearance.
Checking and Adjusting Remote
Control Cables
Note: Never adjust the high speed stop bolt
on the governor. This will void the engine
warranty.
Adjusting Engine Speed Remote
Control Cable
Ensure the control lever on the engine side
moves to the high speed stop position and
low speed stop position when the remote
control lever is moved to HIGH and then to
LOW.
3JH4E / 4JH4AE
0003625
(3)
(5)
(6)
(1)
(2)
(4)
Figure 5
1 – Cable
2 – Fuel Injection Pump
3 – Adjustment Screw
4 – Low Speed Stop
5 – Control Lever
6 – High Speed Stop
4JH4-TE / 4JH4-HTE
(1)
(2)
(3) (4) (5)
6
(6)
0004496
Figure 6
1 – Cable
2 – Fuel Injection Pump
3 – Cable Fitting
4 – Low Speed Stop
5 – Control Lever
6 – High Speed Stop
1. To adjust, loosen the adjustment screw
or cable fitting (Figure 5, (3)) or
(Figure 6, (3)) for the remote control
cable on the engine side and adjust.
PERIODIC MAINTENANCE
JH4 Series Operation Manual 63